darkcomet | ac127a5d36034ce79ec68c677415a575eba0eff150db40a8dbc814d160df952a

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	f6444e469478023a106e271416492875_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\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	f6444e469478023a106e271416492875_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
2076	winupdate.exe

Loads dropped DLL 4 IoCs

pid	Process
2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
2076	winupdate.exe
2076	winupdate.exe
2076	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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	f6444e469478023a106e271416492875_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 2 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	f6444e469478023a106e271416492875_JaffaCakes118.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\VendorIdentifier	winupdate.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	f6444e469478023a106e271416492875_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f6444e469478023a106e271416492875_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	f6444e469478023a106e271416492875_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	f6444e469478023a106e271416492875_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

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	f6444e469478023a106e271416492875_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2076	winupdate.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: SeSecurityPrivilege	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: SeBackupPrivilege	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: SeRestorePrivilege	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: SeShutdownPrivilege	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: SeDebugPrivilege	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: SeUndockPrivilege	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: 33	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: 34	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: 35	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2076	winupdate.exe
Token: SeSecurityPrivilege	2076	winupdate.exe
Token: SeTakeOwnershipPrivilege	2076	winupdate.exe
Token: SeLoadDriverPrivilege	2076	winupdate.exe
Token: SeSystemProfilePrivilege	2076	winupdate.exe
Token: SeSystemtimePrivilege	2076	winupdate.exe
Token: SeProfSingleProcessPrivilege	2076	winupdate.exe
Token: SeIncBasePriorityPrivilege	2076	winupdate.exe
Token: SeCreatePagefilePrivilege	2076	winupdate.exe
Token: SeBackupPrivilege	2076	winupdate.exe
Token: SeRestorePrivilege	2076	winupdate.exe
Token: SeShutdownPrivilege	2076	winupdate.exe
Token: SeDebugPrivilege	2076	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2076	winupdate.exe
Token: SeChangeNotifyPrivilege	2076	winupdate.exe
Token: SeRemoteShutdownPrivilege	2076	winupdate.exe
Token: SeUndockPrivilege	2076	winupdate.exe
Token: SeManageVolumePrivilege	2076	winupdate.exe
Token: SeImpersonatePrivilege	2076	winupdate.exe
Token: SeCreateGlobalPrivilege	2076	winupdate.exe
Token: 33	2076	winupdate.exe
Token: 34	2076	winupdate.exe
Token: 35	2076	winupdate.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2096 wrote to memory of 2076	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe	30
PID 2096 wrote to memory of 2076	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe	30
PID 2096 wrote to memory of 2076	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe	30
PID 2096 wrote to memory of 2076	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe	30
PID 2096 wrote to memory of 2076	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe	30
PID 2096 wrote to memory of 2076	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe	30
PID 2096 wrote to memory of 2076	2096	f6444e469478023a106e271416492875_JaffaCakes118.exe	30

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\f6444e469478023a106e271416492875_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f6444e469478023a106e271416492875_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Loads dropped DLL
- 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:2096
- C:\Windupdt\winupdate.exe
  "C:\Windupdt\winupdate.exe"
  2⤵
  - Modifies firewall policy service
  - Modifies security service
  - Windows security bypass
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Loads dropped DLL
  - 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
  - System policy modification
  PID:2076

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