darkcomet | bdca0dc5a747283dda93176036564a0637e287a077951cc394e1acc65404821c

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe

Modifies firewall policy service 2 TTPs 3 IoCs

Modify Registry

Windows Service

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	winupdate.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "1"	winupdate.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	winupdate.exe

Modifies security service 2 TTPs 1 IoCs

Modify Registry

Windows Service

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\UpdatesDisableNotify = "1"	winupdate.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	winupdate.exe

Disables RegEdit via registry modification 1 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\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	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
2508	winupdate.exe
2120	winupdate.exe

Loads dropped DLL 8 IoCs

pid	Process
2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
2508	winupdate.exe
2508	winupdate.exe
2508	winupdate.exe
2508	winupdate.exe
2120	winupdate.exe
2120	winupdate.exe
2120	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-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 628 set thread context of 2724	628	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	28
PID 2508 set thread context of 2120	2508	winupdate.exe	30

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	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
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.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	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2120	winupdate.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: SeSecurityPrivilege	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: SeBackupPrivilege	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: SeRestorePrivilege	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: SeShutdownPrivilege	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: SeDebugPrivilege	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: SeUndockPrivilege	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: 33	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: 34	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: 35	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2120	winupdate.exe
Token: SeSecurityPrivilege	2120	winupdate.exe
Token: SeTakeOwnershipPrivilege	2120	winupdate.exe
Token: SeLoadDriverPrivilege	2120	winupdate.exe
Token: SeSystemProfilePrivilege	2120	winupdate.exe
Token: SeSystemtimePrivilege	2120	winupdate.exe
Token: SeProfSingleProcessPrivilege	2120	winupdate.exe
Token: SeIncBasePriorityPrivilege	2120	winupdate.exe
Token: SeCreatePagefilePrivilege	2120	winupdate.exe
Token: SeBackupPrivilege	2120	winupdate.exe
Token: SeRestorePrivilege	2120	winupdate.exe
Token: SeShutdownPrivilege	2120	winupdate.exe
Token: SeDebugPrivilege	2120	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2120	winupdate.exe
Token: SeChangeNotifyPrivilege	2120	winupdate.exe
Token: SeRemoteShutdownPrivilege	2120	winupdate.exe
Token: SeUndockPrivilege	2120	winupdate.exe
Token: SeManageVolumePrivilege	2120	winupdate.exe
Token: SeImpersonatePrivilege	2120	winupdate.exe
Token: SeCreateGlobalPrivilege	2120	winupdate.exe
Token: 33	2120	winupdate.exe
Token: 34	2120	winupdate.exe
Token: 35	2120	winupdate.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 628 wrote to memory of 2724	628	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	28
PID 628 wrote to memory of 2724	628	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	28
PID 628 wrote to memory of 2724	628	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	28
PID 628 wrote to memory of 2724	628	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	28
PID 628 wrote to memory of 2724	628	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	28
PID 628 wrote to memory of 2724	628	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	28
PID 628 wrote to memory of 2724	628	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	28
PID 628 wrote to memory of 2724	628	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	28
PID 628 wrote to memory of 2724	628	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	28
PID 628 wrote to memory of 2724	628	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	28
PID 628 wrote to memory of 2724	628	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	28
PID 628 wrote to memory of 2724	628	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	28
PID 628 wrote to memory of 2724	628	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	28
PID 2724 wrote to memory of 2508	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	29
PID 2724 wrote to memory of 2508	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	29
PID 2724 wrote to memory of 2508	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	29
PID 2724 wrote to memory of 2508	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	29
PID 2724 wrote to memory of 2508	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	29
PID 2724 wrote to memory of 2508	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	29
PID 2724 wrote to memory of 2508	2724	fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe	29
PID 2508 wrote to memory of 2120	2508	winupdate.exe	30
PID 2508 wrote to memory of 2120	2508	winupdate.exe	30
PID 2508 wrote to memory of 2120	2508	winupdate.exe	30
PID 2508 wrote to memory of 2120	2508	winupdate.exe	30
PID 2508 wrote to memory of 2120	2508	winupdate.exe	30
PID 2508 wrote to memory of 2120	2508	winupdate.exe	30
PID 2508 wrote to memory of 2120	2508	winupdate.exe	30
PID 2508 wrote to memory of 2120	2508	winupdate.exe	30
PID 2508 wrote to memory of 2120	2508	winupdate.exe	30
PID 2508 wrote to memory of 2120	2508	winupdate.exe	30
PID 2508 wrote to memory of 2120	2508	winupdate.exe	30
PID 2508 wrote to memory of 2120	2508	winupdate.exe	30
PID 2508 wrote to memory of 2120	2508	winupdate.exe	30
PID 2508 wrote to memory of 2120	2508	winupdate.exe	30
PID 2508 wrote to memory of 2120	2508	winupdate.exe	30
PID 2508 wrote to memory of 2120	2508	winupdate.exe	30

System policy modification 1 TTPs 3 IoCs

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	winupdate.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	winupdate.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	winupdate.exe

C:\Users\Admin\AppData\Local\Temp\fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:628
- C:\Users\Admin\AppData\Local\Temp\fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\fe7cff60621bc39bcb6b06aa89eab455_JaffaCakes118.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Loads dropped DLL
  - Adds Run key to start application
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2724
- - C:\Windupdt\winupdate.exe
    "C:\Windupdt\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2508
  - - C:\Windupdt\winupdate.exe
      "C:\Windupdt\winupdate.exe"
      4⤵
      Modifies firewall policy service
      Modifies security service
      Windows security bypass
      Disables RegEdit via registry modification
      Checks BIOS information in registry
      Executes dropped EXE
      Loads dropped DLL
      Windows security modification
      Checks processor information in registry
      Enumerates system info in registry
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of AdjustPrivilegeToken
      System policy modification
      PID:2120

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

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

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery