darkcomet | bae611e78d2f69be840277103a759ba79a293c1d9ecf2d17970f55c185fb490d

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	db07283ed9a188cb4dcbb547640c5be8_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-1-5-21-3756129449-3121373848-4276368241-1000\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	db07283ed9a188cb4dcbb547640c5be8_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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
3124	winupdate.exe
3300	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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3492 set thread context of 1424	3492	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe	82
PID 3124 set thread context of 3300	3124	winupdate.exe	84

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	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	db07283ed9a188cb4dcbb547640c5be8_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\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	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	db07283ed9a188cb4dcbb547640c5be8_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

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	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3300	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: SeSecurityPrivilege	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: SeBackupPrivilege	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: SeRestorePrivilege	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: SeShutdownPrivilege	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: SeDebugPrivilege	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: SeUndockPrivilege	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: 33	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: 34	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: 35	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: 36	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3300	winupdate.exe
Token: SeSecurityPrivilege	3300	winupdate.exe
Token: SeTakeOwnershipPrivilege	3300	winupdate.exe
Token: SeLoadDriverPrivilege	3300	winupdate.exe
Token: SeSystemProfilePrivilege	3300	winupdate.exe
Token: SeSystemtimePrivilege	3300	winupdate.exe
Token: SeProfSingleProcessPrivilege	3300	winupdate.exe
Token: SeIncBasePriorityPrivilege	3300	winupdate.exe
Token: SeCreatePagefilePrivilege	3300	winupdate.exe
Token: SeBackupPrivilege	3300	winupdate.exe
Token: SeRestorePrivilege	3300	winupdate.exe
Token: SeShutdownPrivilege	3300	winupdate.exe
Token: SeDebugPrivilege	3300	winupdate.exe
Token: SeSystemEnvironmentPrivilege	3300	winupdate.exe
Token: SeChangeNotifyPrivilege	3300	winupdate.exe
Token: SeRemoteShutdownPrivilege	3300	winupdate.exe
Token: SeUndockPrivilege	3300	winupdate.exe
Token: SeManageVolumePrivilege	3300	winupdate.exe
Token: SeImpersonatePrivilege	3300	winupdate.exe
Token: SeCreateGlobalPrivilege	3300	winupdate.exe
Token: 33	3300	winupdate.exe
Token: 34	3300	winupdate.exe
Token: 35	3300	winupdate.exe
Token: 36	3300	winupdate.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3492	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
3124	winupdate.exe
3300	winupdate.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 3492 wrote to memory of 1424	3492	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe	82
PID 3492 wrote to memory of 1424	3492	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe	82
PID 3492 wrote to memory of 1424	3492	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe	82
PID 3492 wrote to memory of 1424	3492	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe	82
PID 3492 wrote to memory of 1424	3492	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe	82
PID 3492 wrote to memory of 1424	3492	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe	82
PID 3492 wrote to memory of 1424	3492	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe	82
PID 3492 wrote to memory of 1424	3492	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe	82
PID 3492 wrote to memory of 1424	3492	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe	82
PID 3492 wrote to memory of 1424	3492	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe	82
PID 3492 wrote to memory of 1424	3492	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe	82
PID 3492 wrote to memory of 1424	3492	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe	82
PID 3492 wrote to memory of 1424	3492	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe	82
PID 3492 wrote to memory of 1424	3492	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe	82
PID 1424 wrote to memory of 3124	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe	83
PID 1424 wrote to memory of 3124	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe	83
PID 1424 wrote to memory of 3124	1424	db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe	83
PID 3124 wrote to memory of 3300	3124	winupdate.exe	84
PID 3124 wrote to memory of 3300	3124	winupdate.exe	84
PID 3124 wrote to memory of 3300	3124	winupdate.exe	84
PID 3124 wrote to memory of 3300	3124	winupdate.exe	84
PID 3124 wrote to memory of 3300	3124	winupdate.exe	84
PID 3124 wrote to memory of 3300	3124	winupdate.exe	84
PID 3124 wrote to memory of 3300	3124	winupdate.exe	84
PID 3124 wrote to memory of 3300	3124	winupdate.exe	84
PID 3124 wrote to memory of 3300	3124	winupdate.exe	84
PID 3124 wrote to memory of 3300	3124	winupdate.exe	84
PID 3124 wrote to memory of 3300	3124	winupdate.exe	84
PID 3124 wrote to memory of 3300	3124	winupdate.exe	84
PID 3124 wrote to memory of 3300	3124	winupdate.exe	84
PID 3124 wrote to memory of 3300	3124	winupdate.exe	84

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\db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3492
- C:\Users\Admin\AppData\Local\Temp\db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\db07283ed9a188cb4dcbb547640c5be8_JaffaCakes118.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Checks computer location settings
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1424
- - C:\Windupdt\winupdate.exe
    "C:\Windupdt\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3124
  - - 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
      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:3300

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