darkcomet | ca3d5ed5e649e04c111100615ca969a8e9e88f0bb2afce3056ba69db7fb07b4f

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	f724bf54d8a134608ea974d325c29684_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	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

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	f724bf54d8a134608ea974d325c29684_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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
3500	winupdate.exe
4532	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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 780 set thread context of 3580	780	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	82
PID 3500 set thread context of 4532	3500	winupdate.exe	85

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64	winupdate.exe
File created	C:\Windows\SysWOW64	f724bf54d8a134608ea974d325c29684_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	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f724bf54d8a134608ea974d325c29684_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	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	f724bf54d8a134608ea974d325c29684_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	f724bf54d8a134608ea974d325c29684_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\	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeSecurityPrivilege	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeSystemtimePrivilege	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeBackupPrivilege	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeRestorePrivilege	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeShutdownPrivilege	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeDebugPrivilege	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeUndockPrivilege	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeManageVolumePrivilege	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeImpersonatePrivilege	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: 33	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: 34	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: 35	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: 36	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	4532	winupdate.exe
Token: SeSecurityPrivilege	4532	winupdate.exe
Token: SeTakeOwnershipPrivilege	4532	winupdate.exe
Token: SeLoadDriverPrivilege	4532	winupdate.exe
Token: SeSystemProfilePrivilege	4532	winupdate.exe
Token: SeSystemtimePrivilege	4532	winupdate.exe
Token: SeProfSingleProcessPrivilege	4532	winupdate.exe
Token: SeIncBasePriorityPrivilege	4532	winupdate.exe
Token: SeCreatePagefilePrivilege	4532	winupdate.exe
Token: SeBackupPrivilege	4532	winupdate.exe
Token: SeRestorePrivilege	4532	winupdate.exe
Token: SeShutdownPrivilege	4532	winupdate.exe
Token: SeDebugPrivilege	4532	winupdate.exe
Token: SeSystemEnvironmentPrivilege	4532	winupdate.exe
Token: SeChangeNotifyPrivilege	4532	winupdate.exe
Token: SeRemoteShutdownPrivilege	4532	winupdate.exe
Token: SeUndockPrivilege	4532	winupdate.exe
Token: SeManageVolumePrivilege	4532	winupdate.exe
Token: SeImpersonatePrivilege	4532	winupdate.exe
Token: SeCreateGlobalPrivilege	4532	winupdate.exe
Token: 33	4532	winupdate.exe
Token: 34	4532	winupdate.exe
Token: 35	4532	winupdate.exe
Token: 36	4532	winupdate.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
780	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
3500	winupdate.exe
4532	winupdate.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 780 wrote to memory of 3580	780	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	82
PID 780 wrote to memory of 3580	780	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	82
PID 780 wrote to memory of 3580	780	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	82
PID 780 wrote to memory of 3580	780	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	82
PID 780 wrote to memory of 3580	780	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	82
PID 780 wrote to memory of 3580	780	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	82
PID 780 wrote to memory of 3580	780	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	82
PID 780 wrote to memory of 3580	780	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	82
PID 780 wrote to memory of 3580	780	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	82
PID 780 wrote to memory of 3580	780	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	82
PID 780 wrote to memory of 3580	780	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	82
PID 780 wrote to memory of 3580	780	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	82
PID 780 wrote to memory of 3580	780	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	82
PID 780 wrote to memory of 3580	780	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	82
PID 3580 wrote to memory of 2804	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	83
PID 3580 wrote to memory of 2804	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	83
PID 3580 wrote to memory of 2804	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	83
PID 3580 wrote to memory of 3500	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	84
PID 3580 wrote to memory of 3500	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	84
PID 3580 wrote to memory of 3500	3580	f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe	84
PID 3500 wrote to memory of 4532	3500	winupdate.exe	85
PID 3500 wrote to memory of 4532	3500	winupdate.exe	85
PID 3500 wrote to memory of 4532	3500	winupdate.exe	85
PID 3500 wrote to memory of 4532	3500	winupdate.exe	85
PID 3500 wrote to memory of 4532	3500	winupdate.exe	85
PID 3500 wrote to memory of 4532	3500	winupdate.exe	85
PID 3500 wrote to memory of 4532	3500	winupdate.exe	85
PID 3500 wrote to memory of 4532	3500	winupdate.exe	85
PID 3500 wrote to memory of 4532	3500	winupdate.exe	85
PID 3500 wrote to memory of 4532	3500	winupdate.exe	85
PID 3500 wrote to memory of 4532	3500	winupdate.exe	85
PID 3500 wrote to memory of 4532	3500	winupdate.exe	85
PID 3500 wrote to memory of 4532	3500	winupdate.exe	85
PID 3500 wrote to memory of 4532	3500	winupdate.exe	85

C:\Users\Admin\AppData\Local\Temp\f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:780
- C:\Users\Admin\AppData\Local\Temp\f724bf54d8a134608ea974d325c29684_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\f724bf54d8a134608ea974d325c29684_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
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3580
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    PID:2804
- - C:\Windupdt\winupdate.exe
    "C:\Windupdt\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3500
  - - C:\Windupdt\winupdate.exe
      "C:\Windupdt\winupdate.exe"
      4⤵
      Modifies firewall policy service
      Checks BIOS information in registry
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Enumerates system info in registry
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:4532

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