darkcomet | c961504e0161888d7a137cc6ff8a609c8477711b5e6c70614867345a91184451

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe

Modifies security service 2 TTPs 1 IoCs

evasion

Modify Registry

Windows Service

T1543.003

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	winupdate.exe

Windows security bypass 2 TTPs 1 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

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	d72d4fa102e2e46cc1a3153f68eae4f7_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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
4528	winupdate.exe

Windows security modification 2 TTPs 1 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

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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	d72d4fa102e2e46cc1a3153f68eae4f7_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	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3176	PING.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\Identifier	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	d72d4fa102e2e46cc1a3153f68eae4f7_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	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	d72d4fa102e2e46cc1a3153f68eae4f7_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	d72d4fa102e2e46cc1a3153f68eae4f7_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\	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3176	PING.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4528	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: SeSecurityPrivilege	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: SeBackupPrivilege	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: SeRestorePrivilege	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: SeShutdownPrivilege	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: SeDebugPrivilege	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: SeUndockPrivilege	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: 33	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: 34	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: 35	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: 36	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	4528	winupdate.exe
Token: SeSecurityPrivilege	4528	winupdate.exe
Token: SeTakeOwnershipPrivilege	4528	winupdate.exe
Token: SeLoadDriverPrivilege	4528	winupdate.exe
Token: SeSystemProfilePrivilege	4528	winupdate.exe
Token: SeSystemtimePrivilege	4528	winupdate.exe
Token: SeProfSingleProcessPrivilege	4528	winupdate.exe
Token: SeIncBasePriorityPrivilege	4528	winupdate.exe
Token: SeCreatePagefilePrivilege	4528	winupdate.exe
Token: SeBackupPrivilege	4528	winupdate.exe
Token: SeRestorePrivilege	4528	winupdate.exe
Token: SeShutdownPrivilege	4528	winupdate.exe
Token: SeDebugPrivilege	4528	winupdate.exe
Token: SeSystemEnvironmentPrivilege	4528	winupdate.exe
Token: SeChangeNotifyPrivilege	4528	winupdate.exe
Token: SeRemoteShutdownPrivilege	4528	winupdate.exe
Token: SeUndockPrivilege	4528	winupdate.exe
Token: SeManageVolumePrivilege	4528	winupdate.exe
Token: SeImpersonatePrivilege	4528	winupdate.exe
Token: SeCreateGlobalPrivilege	4528	winupdate.exe
Token: 33	4528	winupdate.exe
Token: 34	4528	winupdate.exe
Token: 35	4528	winupdate.exe
Token: 36	4528	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4528	winupdate.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2408 wrote to memory of 4528	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe	82
PID 2408 wrote to memory of 4528	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe	82
PID 2408 wrote to memory of 4528	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe	82
PID 2408 wrote to memory of 376	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe	83
PID 2408 wrote to memory of 376	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe	83
PID 2408 wrote to memory of 376	2408	d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe	83
PID 376 wrote to memory of 3176	376	cmd.exe	85
PID 376 wrote to memory of 3176	376	cmd.exe	85
PID 376 wrote to memory of 3176	376	cmd.exe	85

C:\Users\Admin\AppData\Local\Temp\d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d72d4fa102e2e46cc1a3153f68eae4f7_JaffaCakes118.exe"
1⤵
- 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:2408
- C:\Windupdt\winupdate.exe
  "C:\Windupdt\winupdate.exe"
  2⤵
  - 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:4528
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\_dcsc_.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:376
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3176

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