darkcomet | e05fca6a1f09cc8f32eef7a5d494a5658599c293a9c57c7fc6a39e464cff5696

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\Windupdt\\winupdate.exe"	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

Windows Service

T1543.003

description	ioc	Process
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
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	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\AntiVirusDisableNotify = "1"	winupdate.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	winupdate.exe

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\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	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.exe

Deletes itself 1 IoCs

pid	Process
2532	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
2612	winupdate.exe
2404	winupdate.exe

Loads dropped DLL 2 IoCs

pid	Process
2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
2612	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-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\Windupdt\\winupdate.exe"	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral1/memory/2876-0-0x0000000000400000-0x00000000004C2000-memory.dmp	autoit_exe
behavioral1/files/0x000b000000015cff-28.dat	autoit_exe
behavioral1/memory/2612-33-0x0000000000400000-0x00000000004C2000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2876 set thread context of 2488	2876	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	28
PID 2612 set thread context of 2404	2612	winupdate.exe	32

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

System Information Discovery
T1082

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\VendorIdentifier	f28323cc645074a5bdb0d2bc862bdfe4_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
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	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	f28323cc645074a5bdb0d2bc862bdfe4_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	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2444	PING.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2404	winupdate.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: SeSecurityPrivilege	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: SeBackupPrivilege	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: SeRestorePrivilege	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: SeShutdownPrivilege	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: SeDebugPrivilege	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: SeUndockPrivilege	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: 33	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: 34	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: 35	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2404	winupdate.exe
Token: SeSecurityPrivilege	2404	winupdate.exe
Token: SeTakeOwnershipPrivilege	2404	winupdate.exe
Token: SeLoadDriverPrivilege	2404	winupdate.exe
Token: SeSystemProfilePrivilege	2404	winupdate.exe
Token: SeSystemtimePrivilege	2404	winupdate.exe
Token: SeProfSingleProcessPrivilege	2404	winupdate.exe
Token: SeIncBasePriorityPrivilege	2404	winupdate.exe
Token: SeCreatePagefilePrivilege	2404	winupdate.exe
Token: SeBackupPrivilege	2404	winupdate.exe
Token: SeRestorePrivilege	2404	winupdate.exe
Token: SeShutdownPrivilege	2404	winupdate.exe
Token: SeDebugPrivilege	2404	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2404	winupdate.exe
Token: SeChangeNotifyPrivilege	2404	winupdate.exe
Token: SeRemoteShutdownPrivilege	2404	winupdate.exe
Token: SeUndockPrivilege	2404	winupdate.exe
Token: SeManageVolumePrivilege	2404	winupdate.exe
Token: SeImpersonatePrivilege	2404	winupdate.exe
Token: SeCreateGlobalPrivilege	2404	winupdate.exe
Token: 33	2404	winupdate.exe
Token: 34	2404	winupdate.exe
Token: 35	2404	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2404	winupdate.exe

Suspicious use of WriteProcessMemory 45 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 2488	2876	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	28
PID 2876 wrote to memory of 2488	2876	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	28
PID 2876 wrote to memory of 2488	2876	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	28
PID 2876 wrote to memory of 2488	2876	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	28
PID 2876 wrote to memory of 2488	2876	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	28
PID 2876 wrote to memory of 2488	2876	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	28
PID 2876 wrote to memory of 2488	2876	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	28
PID 2876 wrote to memory of 2488	2876	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	28
PID 2876 wrote to memory of 2488	2876	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	28
PID 2876 wrote to memory of 2488	2876	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	28
PID 2876 wrote to memory of 2488	2876	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	28
PID 2876 wrote to memory of 2488	2876	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	28
PID 2876 wrote to memory of 2488	2876	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	28
PID 2876 wrote to memory of 2488	2876	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	28
PID 2876 wrote to memory of 2488	2876	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	28
PID 2488 wrote to memory of 2612	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	29
PID 2488 wrote to memory of 2612	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	29
PID 2488 wrote to memory of 2612	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	29
PID 2488 wrote to memory of 2612	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	29
PID 2488 wrote to memory of 2612	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	29
PID 2488 wrote to memory of 2612	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	29
PID 2488 wrote to memory of 2612	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	29
PID 2488 wrote to memory of 2532	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	30
PID 2488 wrote to memory of 2532	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	30
PID 2488 wrote to memory of 2532	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	30
PID 2488 wrote to memory of 2532	2488	f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe	30
PID 2532 wrote to memory of 2444	2532	cmd.exe	33
PID 2532 wrote to memory of 2444	2532	cmd.exe	33
PID 2532 wrote to memory of 2444	2532	cmd.exe	33
PID 2532 wrote to memory of 2444	2532	cmd.exe	33
PID 2612 wrote to memory of 2404	2612	winupdate.exe	32
PID 2612 wrote to memory of 2404	2612	winupdate.exe	32
PID 2612 wrote to memory of 2404	2612	winupdate.exe	32
PID 2612 wrote to memory of 2404	2612	winupdate.exe	32
PID 2612 wrote to memory of 2404	2612	winupdate.exe	32
PID 2612 wrote to memory of 2404	2612	winupdate.exe	32
PID 2612 wrote to memory of 2404	2612	winupdate.exe	32
PID 2612 wrote to memory of 2404	2612	winupdate.exe	32
PID 2612 wrote to memory of 2404	2612	winupdate.exe	32
PID 2612 wrote to memory of 2404	2612	winupdate.exe	32
PID 2612 wrote to memory of 2404	2612	winupdate.exe	32
PID 2612 wrote to memory of 2404	2612	winupdate.exe	32
PID 2612 wrote to memory of 2404	2612	winupdate.exe	32
PID 2612 wrote to memory of 2404	2612	winupdate.exe	32
PID 2612 wrote to memory of 2404	2612	winupdate.exe	32

C:\Users\Admin\AppData\Local\Temp\f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Users\Admin\AppData\Local\Temp\f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\f28323cc645074a5bdb0d2bc862bdfe4_JaffaCakes118.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Loads dropped DLL
  - Adds Run key to start application
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2488
- - C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Windupdt\winupdate.exe
    "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Windupdt\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2612
  - - C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Windupdt\winupdate.exe
      "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Windupdt\winupdate.exe"
      4⤵
      Modifies firewall policy service
      Windows security bypass
      Disables RegEdit via registry modification
      Checks BIOS information in registry
      Executes dropped EXE
      Windows security modification
      Checks processor information in registry
      Enumerates system info in registry
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:2404
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\_dcsc_.bat" "
    3⤵
    - Deletes itself
    - Suspicious use of WriteProcessMemory
    PID:2532
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 2
      4⤵
      Runs ping.exe
      PID:2444

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 Tools

T1562.001

Modify Registry

Credential Access

Discovery

Query Registry

Remote System Discovery

T1018

System Information Discovery