darkcomet | a8f9aa681a2d661027d032b572e8e4c99b9b3bf4985d244982903cc1f10c6c36

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdat-e.exe"	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe

Modifies firewall policy service 3 TTPs 3 IoCs

evasion

Modify Registry

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	winupdat-e.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "1"	winupdat-e.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	winupdat-e.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	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdat-e.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	winupdat-e.exe

Executes dropped EXE 3 IoCs

pid	Process
4592	FREE SMS.EXE
4468	winupdat-e.exe
1608	FREE SMS.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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdat-e.exe"	c3fe16884b959232272700439d4d823b_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	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	FREE SMS.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdat-e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	FREE SMS.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winupdat-e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	winupdat-e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	winupdat-e.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winupdat-e.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	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdat-e.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4468	winupdat-e.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeSecurityPrivilege	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeBackupPrivilege	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeRestorePrivilege	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeShutdownPrivilege	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeDebugPrivilege	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeUndockPrivilege	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: 33	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: 34	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: 35	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: 36	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	4468	winupdat-e.exe
Token: SeSecurityPrivilege	4468	winupdat-e.exe
Token: SeTakeOwnershipPrivilege	4468	winupdat-e.exe
Token: SeLoadDriverPrivilege	4468	winupdat-e.exe
Token: SeSystemProfilePrivilege	4468	winupdat-e.exe
Token: SeSystemtimePrivilege	4468	winupdat-e.exe
Token: SeProfSingleProcessPrivilege	4468	winupdat-e.exe
Token: SeIncBasePriorityPrivilege	4468	winupdat-e.exe
Token: SeCreatePagefilePrivilege	4468	winupdat-e.exe
Token: SeBackupPrivilege	4468	winupdat-e.exe
Token: SeRestorePrivilege	4468	winupdat-e.exe
Token: SeShutdownPrivilege	4468	winupdat-e.exe
Token: SeDebugPrivilege	4468	winupdat-e.exe
Token: SeSystemEnvironmentPrivilege	4468	winupdat-e.exe
Token: SeChangeNotifyPrivilege	4468	winupdat-e.exe
Token: SeRemoteShutdownPrivilege	4468	winupdat-e.exe
Token: SeUndockPrivilege	4468	winupdat-e.exe
Token: SeManageVolumePrivilege	4468	winupdat-e.exe
Token: SeImpersonatePrivilege	4468	winupdat-e.exe
Token: SeCreateGlobalPrivilege	4468	winupdat-e.exe
Token: 33	4468	winupdat-e.exe
Token: 34	4468	winupdat-e.exe
Token: 35	4468	winupdat-e.exe
Token: 36	4468	winupdat-e.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4592	FREE SMS.EXE
1608	FREE SMS.EXE
4468	winupdat-e.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1808 wrote to memory of 4592	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe	83
PID 1808 wrote to memory of 4592	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe	83
PID 1808 wrote to memory of 4592	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe	83
PID 1808 wrote to memory of 4468	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe	84
PID 1808 wrote to memory of 4468	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe	84
PID 1808 wrote to memory of 4468	1808	c3fe16884b959232272700439d4d823b_JaffaCakes118.exe	84
PID 4468 wrote to memory of 1608	4468	winupdat-e.exe	85
PID 4468 wrote to memory of 1608	4468	winupdat-e.exe	85
PID 4468 wrote to memory of 1608	4468	winupdat-e.exe	85

C:\Users\Admin\AppData\Local\Temp\c3fe16884b959232272700439d4d823b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c3fe16884b959232272700439d4d823b_JaffaCakes118.exe"
1⤵
- 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:1808
- C:\Users\Admin\AppData\Local\Temp\FREE SMS.EXE
  "C:\Users\Admin\AppData\Local\Temp\FREE SMS.EXE"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4592
- C:\Windupdt\winupdat-e.exe
  "C:\Windupdt\winupdat-e.exe"
  2⤵
  - Modifies firewall policy service
  - Checks BIOS information in registry
  - Checks computer location settings
  - Executes dropped EXE
  - 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
  - Suspicious use of WriteProcessMemory
  PID:4468
- - C:\Users\Admin\AppData\Local\Temp\FREE SMS.EXE
    "C:\Users\Admin\AppData\Local\Temp\FREE SMS.EXE"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:1608

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 System Firewall

T1562.004

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery