darkcomet | 65dfe1cfe57a4548bdb2c2c5c8008f4630bd8e8528569fb3d50214fe4e9dcc71

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Desktop\\Windupdt\\winupdate.exe"	111a0e25005a8f8ceb917a602717446e_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
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

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\AntiVirusDisableNotify = "1"	winupdate.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "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	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
1912	winupdate.exe
1612	winupdate.exe

UPX packed file 9 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/412-70-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/412-83-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/412-80-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/412-79-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/412-75-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/412-72-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/412-109-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/1612-177-0x0000000000400000-0x00000000004C5000-memory.dmp	upx
behavioral2/memory/1612-186-0x0000000000400000-0x00000000004C5000-memory.dmp	upx

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-1-5-21-2804150937-2146708401-419095071-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\Desktop\\Windupdt\\winupdate.exe"	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 968 set thread context of 412	968	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	80
PID 1912 set thread context of 1612	1912	winupdate.exe	89

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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	111a0e25005a8f8ceb917a602717446e_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

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	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeDebugPrivilege	968	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeSecurityPrivilege	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeSystemtimePrivilege	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeBackupPrivilege	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeRestorePrivilege	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeShutdownPrivilege	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeDebugPrivilege	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeUndockPrivilege	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeManageVolumePrivilege	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeImpersonatePrivilege	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: 33	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: 34	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: 35	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: 36	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
Token: SeDebugPrivilege	1912	winupdate.exe
Token: SeIncreaseQuotaPrivilege	1612	winupdate.exe
Token: SeSecurityPrivilege	1612	winupdate.exe
Token: SeTakeOwnershipPrivilege	1612	winupdate.exe
Token: SeLoadDriverPrivilege	1612	winupdate.exe
Token: SeSystemProfilePrivilege	1612	winupdate.exe
Token: SeSystemtimePrivilege	1612	winupdate.exe
Token: SeProfSingleProcessPrivilege	1612	winupdate.exe
Token: SeIncBasePriorityPrivilege	1612	winupdate.exe
Token: SeCreatePagefilePrivilege	1612	winupdate.exe
Token: SeBackupPrivilege	1612	winupdate.exe
Token: SeRestorePrivilege	1612	winupdate.exe
Token: SeShutdownPrivilege	1612	winupdate.exe
Token: SeDebugPrivilege	1612	winupdate.exe
Token: SeSystemEnvironmentPrivilege	1612	winupdate.exe
Token: SeChangeNotifyPrivilege	1612	winupdate.exe
Token: SeRemoteShutdownPrivilege	1612	winupdate.exe
Token: SeUndockPrivilege	1612	winupdate.exe
Token: SeManageVolumePrivilege	1612	winupdate.exe
Token: SeImpersonatePrivilege	1612	winupdate.exe
Token: SeCreateGlobalPrivilege	1612	winupdate.exe
Token: 33	1612	winupdate.exe
Token: 34	1612	winupdate.exe
Token: 35	1612	winupdate.exe
Token: 36	1612	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1612	winupdate.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 968 wrote to memory of 412	968	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	80
PID 968 wrote to memory of 412	968	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	80
PID 968 wrote to memory of 412	968	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	80
PID 968 wrote to memory of 412	968	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	80
PID 968 wrote to memory of 412	968	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	80
PID 968 wrote to memory of 412	968	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	80
PID 968 wrote to memory of 412	968	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	80
PID 968 wrote to memory of 412	968	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	80
PID 412 wrote to memory of 5088	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	87
PID 412 wrote to memory of 5088	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	87
PID 412 wrote to memory of 5088	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	87
PID 412 wrote to memory of 1912	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	88
PID 412 wrote to memory of 1912	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	88
PID 412 wrote to memory of 1912	412	111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe	88
PID 1912 wrote to memory of 1612	1912	winupdate.exe	89
PID 1912 wrote to memory of 1612	1912	winupdate.exe	89
PID 1912 wrote to memory of 1612	1912	winupdate.exe	89
PID 1912 wrote to memory of 1612	1912	winupdate.exe	89
PID 1912 wrote to memory of 1612	1912	winupdate.exe	89
PID 1912 wrote to memory of 1612	1912	winupdate.exe	89
PID 1912 wrote to memory of 1612	1912	winupdate.exe	89
PID 1912 wrote to memory of 1612	1912	winupdate.exe	89

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\111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:968
- C:\Users\Admin\AppData\Local\Temp\111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\111a0e25005a8f8ceb917a602717446e_JaffaCakes118.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Checks computer location settings
  - 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:412
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    PID:5088
- - C:\Users\Admin\Desktop\Windupdt\winupdate.exe
    "C:\Users\Admin\Desktop\Windupdt\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1912
  - - C:\Users\Admin\Desktop\Windupdt\winupdate.exe
      "C:\Users\Admin\Desktop\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
      Checks processor information in registry
      Enumerates system info in registry
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      System policy modification
      PID:1612

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