077b7dfa09267418c1896cb6ca8bb9212f76918cac7b8ee4699fa06c9b32c969

Windows Service

Disable or Modify Tools

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

Modifies Windows Defender Real-time Protection settings 3 TTPs 7 IoCs

defense_evasion trojan

Modify Registry

Windows Service

Disable or Modify Tools

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	ofx.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	ofx.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	ofx.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	ofx.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	ofx.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1"	ofx.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScriptScanning = "1"	ofx.exe

Windows security bypass 2 TTPs 3 IoCs

defense_evasion trojan

Disable or Modify Tools

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Extensions	ofx.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes	ofx.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	ofx.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

Enumerates VirtualBox registry keys 2 TTPs 1 IoCs

defense_evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxGuest	ofx.exe

Modifies boot configuration data using bcdedit 1 TTPs 3 IoCs

ransomware evasion

Inhibit System Recovery

pid	Process
1128	bcdedit.exe
2516	bcdedit.exe
3092	bcdedit.exe

Renames multiple (1409) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Deletes backup catalog 3 TTPs 1 IoCs

Uses wbadmin.exe to inhibit system recovery.

ransomware

Command and Scripting Interpreter

T1059

File Deletion

T1070.004

Inhibit System Recovery

pid	Process
4912	wbadmin.exe

Disables use of System Restore points 1 TTPs
defense_evasion

Inhibit System Recovery
T1490

Looks for VMWare services registry key. 1 TTPs 1 IoCs

defense_evasion

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\vmci	ofx.exe

Executes dropped EXE 1 IoCs

pid	Process
4216	76faf53bfc57fe6b.exe

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

Windows security modification 2 TTPs 4 IoCs

defense_evasion trojan

Disable or Modify Tools

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths	ofx.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions	ofx.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Extensions	ofx.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes	ofx.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4154726816-2055034831-2297277433-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysCache = "C:\\Users\\Admin\\AppData\\Local\\Microsoft\\Windows\\Themes\\76faf53bfc57fe6b.exe"	ofx.exe

Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs

Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

Web Service

T1102

flow	ioc
1	discord.com
9	discord.com

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\Recovery	reagentc.exe
File opened for modification	C:\Windows\system32\Recovery\ReAgent.xml	reagentc.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Logs\ReAgent\ReAgent.log	reagentc.exe
File opened for modification	C:\Windows\Panther\UnattendGC\setuperr.log	reagentc.exe
File opened for modification	C:\Windows\Panther\UnattendGC\diagerr.xml	reagentc.exe
File opened for modification	C:\Windows\Panther\UnattendGC\diagwrn.xml	reagentc.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	ofx.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	ofx.exe

Checks SCSI registry key(s) 3 TTPs 4 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_WDC&PROD_WDS100T2B0A\4&215468A5&0&000000	vds.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName	vds.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_DADY&PROD_HL-DT-ST_DVD+-RW\4&215468A5&0&010000	vds.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_HL-DT-ST_DVD+-RW\4&215468a5&0&010000\FriendlyName	vds.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	ofx.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ofx.exe

Interacts with shadow copies 3 TTPs 1 IoCs

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

ransomware

File Deletion

T1070.004

Inhibit System Recovery

Direct Volume Access

T1006

pid	Process
4700	vssadmin.exe

Modifies registry class 7 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4154726816-2055034831-2297277433-1000_Classes\.ofx	ofx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4154726816-2055034831-2297277433-1000_Classes\.ofx\ = "ofxfile"	ofx.exe
Key created	\REGISTRY\USER\S-1-5-21-4154726816-2055034831-2297277433-1000_Classes\ofxfile	ofx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4154726816-2055034831-2297277433-1000_Classes\ofxfile\ = "Protected document"	ofx.exe
Key created	\REGISTRY\USER\S-1-5-21-4154726816-2055034831-2297277433-1000_Classes\ofxfile\DefaultIcon	ofx.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4154726816-2055034831-2297277433-1000_Classes\ofxfile\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Microsoft\\Windows\\Explorer\\ofx.ico,0"	ofx.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{B4BFCC3A-DB2C-424C-B029-7FE99A87C641}\Instance\	NOTEPAD.EXE

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
3608	NOTEPAD.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
996	ofx.exe
996	ofx.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeSystemEnvironmentPrivilege	4512	svchost.exe
Token: SeBackupPrivilege	5256	vssvc.exe
Token: SeRestorePrivilege	5256	vssvc.exe
Token: SeAuditPrivilege	5256	vssvc.exe
Token: SeBackupPrivilege	4892	wbengine.exe
Token: SeRestorePrivilege	4892	wbengine.exe
Token: SeSecurityPrivilege	4892	wbengine.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 996 wrote to memory of 3584	996	ofx.exe	90
PID 996 wrote to memory of 1128	996	ofx.exe	93
PID 996 wrote to memory of 2516	996	ofx.exe	95
PID 996 wrote to memory of 3092	996	ofx.exe	97
PID 996 wrote to memory of 4700	996	ofx.exe	99
PID 996 wrote to memory of 4912	996	ofx.exe	103

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\ofx.exe
"C:\Users\Admin\AppData\Local\Temp\ofx.exe"
1⤵
- Modifies Windows Defender DisableAntiSpyware settings
- Modifies Windows Defender Real-time Protection settings
- Windows security bypass
- Enumerates VirtualBox registry keys
- Looks for VMWare services registry key.
- Windows security modification
- Adds Run key to start application
- Reads the TCP/IP host and domain name from the registry
- Checks processor information in registry
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:996
- C:\Windows\system32\reagentc.exe
  "C:\Windows\system32\reagentc.exe" /disable
  2⤵
  - Drops file in System32 directory
  - Drops file in Windows directory
  PID:3584
- C:\Windows\system32\bcdedit.exe
  "C:\Windows\system32\bcdedit.exe" /set {default} recoveryenabled No
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:1128
- C:\Windows\system32\bcdedit.exe
  "C:\Windows\system32\bcdedit.exe" /set {default} bootstatuspolicy ignoreallfailures
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:2516
- C:\Windows\system32\bcdedit.exe
  "C:\Windows\system32\bcdedit.exe" /set {current} recoveryenabled No
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:3092
- C:\Windows\system32\vssadmin.exe
  "C:\Windows\system32\vssadmin.exe" delete shadows /all /quiet
  2⤵
  - Interacts with shadow copies
  PID:4700
- C:\Windows\system32\wbadmin.exe
  "C:\Windows\system32\wbadmin.exe" delete catalog -quiet
  2⤵
  - Deletes backup catalog
  PID:4912

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p -s BDESVC
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4512

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:5256

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4892

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:3312

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
- Checks SCSI registry key(s)
PID:1076

C:\Users\Admin\AppData\Local\Microsoft\Windows\Themes\76faf53bfc57fe6b.exe
C:\Users\Admin\AppData\Local\Microsoft\Windows\Themes\76faf53bfc57fe6b.exe
1⤵
- Executes dropped EXE
PID:4216

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\README_RESTORE.txt
1⤵
- Modifies registry class
- Opens file in notepad (likely ransom note)
PID:3608

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Management Instrumentation

T1047

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

Defense Evasion

Direct Volume Access

T1006

Impair Defenses

T1562

Disable or Modify Tools

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

Virtualization/Sandbox Evasion

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

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Virtualization/Sandbox Evasion

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Inhibit System Recovery