darkcomet | 8b26857cc0e77a877d255f80ce1f88f57d9067f25895a8cc7783deb4e1d6b9b8

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupt\\winupdate.exe"	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe

Modifies security service 2 TTPs 1 IoCs

evasion

Modify Registry

Windows Service

T1543.003

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	winupdate.exe

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	winupdate.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	winupdate.exe

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	winupdate.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\Control Panel\International\Geo\Nation	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
2560	winupdate.exe
1444	winupdate.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	winupdate.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	winupdate.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-1-5-21-2990742725-2267136959-192470804-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupt\\winupdate.exe"	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4164 set thread context of 2764	4164	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe	86
PID 2560 set thread context of 1444	2560	winupdate.exe	88

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 8 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winupdate.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1444	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: SeSecurityPrivilege	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: SeBackupPrivilege	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: SeRestorePrivilege	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: SeShutdownPrivilege	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: SeDebugPrivilege	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: SeUndockPrivilege	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: 33	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: 34	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: 35	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: 36	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	1444	winupdate.exe
Token: SeSecurityPrivilege	1444	winupdate.exe
Token: SeTakeOwnershipPrivilege	1444	winupdate.exe
Token: SeLoadDriverPrivilege	1444	winupdate.exe
Token: SeSystemProfilePrivilege	1444	winupdate.exe
Token: SeSystemtimePrivilege	1444	winupdate.exe
Token: SeProfSingleProcessPrivilege	1444	winupdate.exe
Token: SeIncBasePriorityPrivilege	1444	winupdate.exe
Token: SeCreatePagefilePrivilege	1444	winupdate.exe
Token: SeBackupPrivilege	1444	winupdate.exe
Token: SeRestorePrivilege	1444	winupdate.exe
Token: SeShutdownPrivilege	1444	winupdate.exe
Token: SeDebugPrivilege	1444	winupdate.exe
Token: SeSystemEnvironmentPrivilege	1444	winupdate.exe
Token: SeChangeNotifyPrivilege	1444	winupdate.exe
Token: SeRemoteShutdownPrivilege	1444	winupdate.exe
Token: SeUndockPrivilege	1444	winupdate.exe
Token: SeManageVolumePrivilege	1444	winupdate.exe
Token: SeImpersonatePrivilege	1444	winupdate.exe
Token: SeCreateGlobalPrivilege	1444	winupdate.exe
Token: 33	1444	winupdate.exe
Token: 34	1444	winupdate.exe
Token: 35	1444	winupdate.exe
Token: 36	1444	winupdate.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4164	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
2560	winupdate.exe
1444	winupdate.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 4164 wrote to memory of 2764	4164	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe	86
PID 4164 wrote to memory of 2764	4164	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe	86
PID 4164 wrote to memory of 2764	4164	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe	86
PID 4164 wrote to memory of 2764	4164	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe	86
PID 4164 wrote to memory of 2764	4164	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe	86
PID 4164 wrote to memory of 2764	4164	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe	86
PID 4164 wrote to memory of 2764	4164	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe	86
PID 4164 wrote to memory of 2764	4164	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe	86
PID 4164 wrote to memory of 2764	4164	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe	86
PID 4164 wrote to memory of 2764	4164	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe	86
PID 4164 wrote to memory of 2764	4164	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe	86
PID 4164 wrote to memory of 2764	4164	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe	86
PID 4164 wrote to memory of 2764	4164	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe	86
PID 4164 wrote to memory of 2764	4164	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe	86
PID 2764 wrote to memory of 2560	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe	87
PID 2764 wrote to memory of 2560	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe	87
PID 2764 wrote to memory of 2560	2764	3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe	87
PID 2560 wrote to memory of 1444	2560	winupdate.exe	88
PID 2560 wrote to memory of 1444	2560	winupdate.exe	88
PID 2560 wrote to memory of 1444	2560	winupdate.exe	88
PID 2560 wrote to memory of 1444	2560	winupdate.exe	88
PID 2560 wrote to memory of 1444	2560	winupdate.exe	88
PID 2560 wrote to memory of 1444	2560	winupdate.exe	88
PID 2560 wrote to memory of 1444	2560	winupdate.exe	88
PID 2560 wrote to memory of 1444	2560	winupdate.exe	88
PID 2560 wrote to memory of 1444	2560	winupdate.exe	88
PID 2560 wrote to memory of 1444	2560	winupdate.exe	88
PID 2560 wrote to memory of 1444	2560	winupdate.exe	88
PID 2560 wrote to memory of 1444	2560	winupdate.exe	88
PID 2560 wrote to memory of 1444	2560	winupdate.exe	88
PID 2560 wrote to memory of 1444	2560	winupdate.exe	88

C:\Users\Admin\AppData\Local\Temp\3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4164
- C:\Users\Admin\AppData\Local\Temp\3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\3c2dfdf5bc2a7d48db869607855cfde5_JaffaCakes118.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Checks computer location settings
  - Adds Run key to start application
  - Checks processor information in registry
  - Enumerates system info in registry
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2764
- - C:\Windupt\winupdate.exe
    "C:\Windupt\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2560
  - - C:\Windupt\winupdate.exe
      "C:\Windupt\winupdate.exe"
      4⤵
      Modifies security service
      Windows security bypass
      Disables RegEdit via registry modification
      Checks BIOS information in registry
      Executes dropped EXE
      Windows security modification
      Checks processor information in registry
      Enumerates system info in registry
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:1444

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery