darkcomet | 3df37e035317c8001ce5355b62af3e3351e479ca9ebefe6be9c18470c7b085f6

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"	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe

Modifies firewall policy service 3 TTPs 3 IoCs

defense_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

defense_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 1 IoCs

defense_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

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	JaffaCakes118_c21799fc876c054de396b11942c735fa.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-1-5-21-3833542908-3750648139-3436651901-1000\Control Panel\International\Geo\Nation	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe

Executes dropped EXE 2 IoCs

pid	Process
5056	winupdate.exe
1928	winupdate.exe

Windows security modification 2 TTPs 1 IoCs

defense_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

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-1-5-21-3833542908-3750648139-3436651901-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\Windupdt\\winupdate.exe"	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4304 set thread context of 2308	4304	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe	86
PID 5056 set thread context of 1928	5056	winupdate.exe	92

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	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_c21799fc876c054de396b11942c735fa.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\ProcessorNameString	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winupdate.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	JaffaCakes118_c21799fc876c054de396b11942c735fa.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	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1928	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: SeSecurityPrivilege	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: SeTakeOwnershipPrivilege	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: SeLoadDriverPrivilege	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: SeSystemProfilePrivilege	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: SeSystemtimePrivilege	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: SeProfSingleProcessPrivilege	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: SeIncBasePriorityPrivilege	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: SeCreatePagefilePrivilege	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: SeBackupPrivilege	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: SeRestorePrivilege	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: SeShutdownPrivilege	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: SeDebugPrivilege	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: SeSystemEnvironmentPrivilege	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: SeChangeNotifyPrivilege	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: SeRemoteShutdownPrivilege	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: SeUndockPrivilege	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: SeManageVolumePrivilege	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: SeImpersonatePrivilege	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: SeCreateGlobalPrivilege	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: 33	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: 34	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: 35	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: 36	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
Token: SeIncreaseQuotaPrivilege	1928	winupdate.exe
Token: SeSecurityPrivilege	1928	winupdate.exe
Token: SeTakeOwnershipPrivilege	1928	winupdate.exe
Token: SeLoadDriverPrivilege	1928	winupdate.exe
Token: SeSystemProfilePrivilege	1928	winupdate.exe
Token: SeSystemtimePrivilege	1928	winupdate.exe
Token: SeProfSingleProcessPrivilege	1928	winupdate.exe
Token: SeIncBasePriorityPrivilege	1928	winupdate.exe
Token: SeCreatePagefilePrivilege	1928	winupdate.exe
Token: SeBackupPrivilege	1928	winupdate.exe
Token: SeRestorePrivilege	1928	winupdate.exe
Token: SeShutdownPrivilege	1928	winupdate.exe
Token: SeDebugPrivilege	1928	winupdate.exe
Token: SeSystemEnvironmentPrivilege	1928	winupdate.exe
Token: SeChangeNotifyPrivilege	1928	winupdate.exe
Token: SeRemoteShutdownPrivilege	1928	winupdate.exe
Token: SeUndockPrivilege	1928	winupdate.exe
Token: SeManageVolumePrivilege	1928	winupdate.exe
Token: SeImpersonatePrivilege	1928	winupdate.exe
Token: SeCreateGlobalPrivilege	1928	winupdate.exe
Token: 33	1928	winupdate.exe
Token: 34	1928	winupdate.exe
Token: 35	1928	winupdate.exe
Token: 36	1928	winupdate.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4304	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
5056	winupdate.exe
1928	winupdate.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 4304 wrote to memory of 2308	4304	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe	86
PID 4304 wrote to memory of 2308	4304	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe	86
PID 4304 wrote to memory of 2308	4304	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe	86
PID 4304 wrote to memory of 2308	4304	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe	86
PID 4304 wrote to memory of 2308	4304	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe	86
PID 4304 wrote to memory of 2308	4304	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe	86
PID 4304 wrote to memory of 2308	4304	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe	86
PID 4304 wrote to memory of 2308	4304	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe	86
PID 4304 wrote to memory of 2308	4304	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe	86
PID 4304 wrote to memory of 2308	4304	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe	86
PID 4304 wrote to memory of 2308	4304	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe	86
PID 4304 wrote to memory of 2308	4304	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe	86
PID 4304 wrote to memory of 2308	4304	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe	86
PID 4304 wrote to memory of 2308	4304	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe	86
PID 2308 wrote to memory of 5056	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe	91
PID 2308 wrote to memory of 5056	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe	91
PID 2308 wrote to memory of 5056	2308	JaffaCakes118_c21799fc876c054de396b11942c735fa.exe	91
PID 5056 wrote to memory of 1928	5056	winupdate.exe	92
PID 5056 wrote to memory of 1928	5056	winupdate.exe	92
PID 5056 wrote to memory of 1928	5056	winupdate.exe	92
PID 5056 wrote to memory of 1928	5056	winupdate.exe	92
PID 5056 wrote to memory of 1928	5056	winupdate.exe	92
PID 5056 wrote to memory of 1928	5056	winupdate.exe	92
PID 5056 wrote to memory of 1928	5056	winupdate.exe	92
PID 5056 wrote to memory of 1928	5056	winupdate.exe	92
PID 5056 wrote to memory of 1928	5056	winupdate.exe	92
PID 5056 wrote to memory of 1928	5056	winupdate.exe	92
PID 5056 wrote to memory of 1928	5056	winupdate.exe	92
PID 5056 wrote to memory of 1928	5056	winupdate.exe	92
PID 5056 wrote to memory of 1928	5056	winupdate.exe	92
PID 5056 wrote to memory of 1928	5056	winupdate.exe	92

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c21799fc876c054de396b11942c735fa.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4304
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c21799fc876c054de396b11942c735fa.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c21799fc876c054de396b11942c735fa.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:2308
- - C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Windupdt\winupdate.exe
    "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\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:5056
  - - 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
      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
      PID:1928

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Windupdt\winupdate.exe
1⤵
PID:4704

Network

MITRE ATT&CK Enterprise v16

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