darkcomet | 99356d20505fff841ef2e0f306702d5115cbab21e428c63ae9b984ae481d98e0

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\Windupdt\\winupdate.exe"	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe

Modifies firewall policy service 3 TTPs 3 IoCs

Modify Registry

Windows Service

Disable or Modify System Firewall

T1562.004

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-1-5-21-2437139445-1151884604-3026847218-1000\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	8cfc5e80361a0524a480e3c58092cc7f_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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
4144	winupdate.exe
2796	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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\Windupdt\\winupdate.exe"	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2936	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
4144	winupdate.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2936 set thread context of 344	2936	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe	85
PID 4144 set thread context of 2796	4144	winupdate.exe	89

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Windupdt\winupdate.exe	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
File opened for modification	C:\Windows\Windupdt\	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
File opened for modification	C:\Windows\Windupdt\winupdate.exe	winupdate.exe
File created	C:\Windows\Windupdt\winupdate.exe	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe

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 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	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	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	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2796	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: SeSecurityPrivilege	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: SeSystemtimePrivilege	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: SeBackupPrivilege	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: SeRestorePrivilege	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: SeShutdownPrivilege	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: SeDebugPrivilege	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: SeUndockPrivilege	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: SeManageVolumePrivilege	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: SeImpersonatePrivilege	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: 33	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: 34	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: 35	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: 36	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2796	winupdate.exe
Token: SeSecurityPrivilege	2796	winupdate.exe
Token: SeTakeOwnershipPrivilege	2796	winupdate.exe
Token: SeLoadDriverPrivilege	2796	winupdate.exe
Token: SeSystemProfilePrivilege	2796	winupdate.exe
Token: SeSystemtimePrivilege	2796	winupdate.exe
Token: SeProfSingleProcessPrivilege	2796	winupdate.exe
Token: SeIncBasePriorityPrivilege	2796	winupdate.exe
Token: SeCreatePagefilePrivilege	2796	winupdate.exe
Token: SeBackupPrivilege	2796	winupdate.exe
Token: SeRestorePrivilege	2796	winupdate.exe
Token: SeShutdownPrivilege	2796	winupdate.exe
Token: SeDebugPrivilege	2796	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2796	winupdate.exe
Token: SeChangeNotifyPrivilege	2796	winupdate.exe
Token: SeRemoteShutdownPrivilege	2796	winupdate.exe
Token: SeUndockPrivilege	2796	winupdate.exe
Token: SeManageVolumePrivilege	2796	winupdate.exe
Token: SeImpersonatePrivilege	2796	winupdate.exe
Token: SeCreateGlobalPrivilege	2796	winupdate.exe
Token: 33	2796	winupdate.exe
Token: 34	2796	winupdate.exe
Token: 35	2796	winupdate.exe
Token: 36	2796	winupdate.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
2936	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
2936	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
4144	winupdate.exe
4144	winupdate.exe
2796	winupdate.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 2936 wrote to memory of 344	2936	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe	85
PID 2936 wrote to memory of 344	2936	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe	85
PID 2936 wrote to memory of 344	2936	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe	85
PID 2936 wrote to memory of 344	2936	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe	85
PID 2936 wrote to memory of 344	2936	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe	85
PID 2936 wrote to memory of 344	2936	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe	85
PID 2936 wrote to memory of 344	2936	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe	85
PID 2936 wrote to memory of 344	2936	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe	85
PID 2936 wrote to memory of 344	2936	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe	85
PID 2936 wrote to memory of 344	2936	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe	85
PID 2936 wrote to memory of 344	2936	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe	85
PID 2936 wrote to memory of 344	2936	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe	85
PID 2936 wrote to memory of 344	2936	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe	85
PID 2936 wrote to memory of 344	2936	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe	85
PID 344 wrote to memory of 4144	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe	88
PID 344 wrote to memory of 4144	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe	88
PID 344 wrote to memory of 4144	344	8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe	88
PID 4144 wrote to memory of 2796	4144	winupdate.exe	89
PID 4144 wrote to memory of 2796	4144	winupdate.exe	89
PID 4144 wrote to memory of 2796	4144	winupdate.exe	89
PID 4144 wrote to memory of 2796	4144	winupdate.exe	89
PID 4144 wrote to memory of 2796	4144	winupdate.exe	89
PID 4144 wrote to memory of 2796	4144	winupdate.exe	89
PID 4144 wrote to memory of 2796	4144	winupdate.exe	89
PID 4144 wrote to memory of 2796	4144	winupdate.exe	89
PID 4144 wrote to memory of 2796	4144	winupdate.exe	89
PID 4144 wrote to memory of 2796	4144	winupdate.exe	89
PID 4144 wrote to memory of 2796	4144	winupdate.exe	89
PID 4144 wrote to memory of 2796	4144	winupdate.exe	89
PID 4144 wrote to memory of 2796	4144	winupdate.exe	89
PID 4144 wrote to memory of 2796	4144	winupdate.exe	89

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\8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2936
- C:\Users\Admin\AppData\Local\Temp\8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\8cfc5e80361a0524a480e3c58092cc7f_JaffaCakes118.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Checks computer location settings
  - Adds Run key to start application
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:344
- - C:\Windows\Windupdt\winupdate.exe
    "C:\Windows\Windupdt\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious use of SetThreadContext
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4144
  - - C:\Windows\Windupdt\winupdate.exe
      C:\Windows\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
      Windows security modification
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Enumerates system info in registry
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      System policy modification
      PID:2796

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 System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery