darkcomet | 1dcd09d5ff5fe681763a198c451a98a24c6d66f210eedb6f06f0aacf5c75251e

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe

Modifies firewall policy service 3 TTPs 3 IoCs

evasion

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

evasion

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 Task Manager via registry modification
evasion

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	f4e3858a6edb70810de5f7f57f40faed_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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
1048	winupdate.exe
2396	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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1520 set thread context of 1484	1520	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe	82
PID 1048 set thread context of 2396	1048	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	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f4e3858a6edb70810de5f7f57f40faed_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 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	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	f4e3858a6edb70810de5f7f57f40faed_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	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2396	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: SeSecurityPrivilege	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: SeBackupPrivilege	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: SeRestorePrivilege	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: SeShutdownPrivilege	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: SeDebugPrivilege	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: SeUndockPrivilege	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: 33	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: 34	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: 35	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: 36	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2396	winupdate.exe
Token: SeSecurityPrivilege	2396	winupdate.exe
Token: SeTakeOwnershipPrivilege	2396	winupdate.exe
Token: SeLoadDriverPrivilege	2396	winupdate.exe
Token: SeSystemProfilePrivilege	2396	winupdate.exe
Token: SeSystemtimePrivilege	2396	winupdate.exe
Token: SeProfSingleProcessPrivilege	2396	winupdate.exe
Token: SeIncBasePriorityPrivilege	2396	winupdate.exe
Token: SeCreatePagefilePrivilege	2396	winupdate.exe
Token: SeBackupPrivilege	2396	winupdate.exe
Token: SeRestorePrivilege	2396	winupdate.exe
Token: SeShutdownPrivilege	2396	winupdate.exe
Token: SeDebugPrivilege	2396	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2396	winupdate.exe
Token: SeChangeNotifyPrivilege	2396	winupdate.exe
Token: SeRemoteShutdownPrivilege	2396	winupdate.exe
Token: SeUndockPrivilege	2396	winupdate.exe
Token: SeManageVolumePrivilege	2396	winupdate.exe
Token: SeImpersonatePrivilege	2396	winupdate.exe
Token: SeCreateGlobalPrivilege	2396	winupdate.exe
Token: 33	2396	winupdate.exe
Token: 34	2396	winupdate.exe
Token: 35	2396	winupdate.exe
Token: 36	2396	winupdate.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1520	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
1048	winupdate.exe
2396	winupdate.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 1520 wrote to memory of 1484	1520	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe	82
PID 1520 wrote to memory of 1484	1520	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe	82
PID 1520 wrote to memory of 1484	1520	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe	82
PID 1520 wrote to memory of 1484	1520	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe	82
PID 1520 wrote to memory of 1484	1520	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe	82
PID 1520 wrote to memory of 1484	1520	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe	82
PID 1520 wrote to memory of 1484	1520	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe	82
PID 1520 wrote to memory of 1484	1520	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe	82
PID 1520 wrote to memory of 1484	1520	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe	82
PID 1520 wrote to memory of 1484	1520	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe	82
PID 1520 wrote to memory of 1484	1520	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe	82
PID 1520 wrote to memory of 1484	1520	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe	82
PID 1520 wrote to memory of 1484	1520	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe	82
PID 1520 wrote to memory of 1484	1520	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe	82
PID 1484 wrote to memory of 1048	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe	83
PID 1484 wrote to memory of 1048	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe	83
PID 1484 wrote to memory of 1048	1484	f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe	83
PID 1048 wrote to memory of 2396	1048	winupdate.exe	84
PID 1048 wrote to memory of 2396	1048	winupdate.exe	84
PID 1048 wrote to memory of 2396	1048	winupdate.exe	84
PID 1048 wrote to memory of 2396	1048	winupdate.exe	84
PID 1048 wrote to memory of 2396	1048	winupdate.exe	84
PID 1048 wrote to memory of 2396	1048	winupdate.exe	84
PID 1048 wrote to memory of 2396	1048	winupdate.exe	84
PID 1048 wrote to memory of 2396	1048	winupdate.exe	84
PID 1048 wrote to memory of 2396	1048	winupdate.exe	84
PID 1048 wrote to memory of 2396	1048	winupdate.exe	84
PID 1048 wrote to memory of 2396	1048	winupdate.exe	84
PID 1048 wrote to memory of 2396	1048	winupdate.exe	84
PID 1048 wrote to memory of 2396	1048	winupdate.exe	84
PID 1048 wrote to memory of 2396	1048	winupdate.exe	84

System policy modification 1 TTPs 3 IoCs

evasion

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\f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1520
- C:\Users\Admin\AppData\Local\Temp\f4e3858a6edb70810de5f7f57f40faed_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\f4e3858a6edb70810de5f7f57f40faed_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:1484
- - 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:1048
  - - C:\Windupdt\winupdate.exe
      "C:\Windupdt\winupdate.exe"
      4⤵
      Modifies firewall policy service
      Modifies security service
      Windows security bypass
      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:2396

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