darkcomet | b827c6078ad83c5838d299a2fc09fef12b4a3a6874b9ba68ece83eb8d287c1a9

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	Crypted.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	Crypted.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.exe

Executes dropped EXE 2 IoCs

pid	Process
2536	Crypted.exe
2272	winupdate.exe

Loads dropped DLL 6 IoCs

pid	Process
1852	bf23736194158362c62bc047048ce57c_JaffaCakes118.exe
1852	bf23736194158362c62bc047048ce57c_JaffaCakes118.exe
2536	Crypted.exe
2272	winupdate.exe
2272	winupdate.exe
2272	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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	Crypted.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 3 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	bf23736194158362c62bc047048ce57c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Crypted.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 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	Crypted.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Crypted.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Crypted.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	Crypted.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	Crypted.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2272	winupdate.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2536	Crypted.exe
Token: SeSecurityPrivilege	2536	Crypted.exe
Token: SeTakeOwnershipPrivilege	2536	Crypted.exe
Token: SeLoadDriverPrivilege	2536	Crypted.exe
Token: SeSystemProfilePrivilege	2536	Crypted.exe
Token: SeSystemtimePrivilege	2536	Crypted.exe
Token: SeProfSingleProcessPrivilege	2536	Crypted.exe
Token: SeIncBasePriorityPrivilege	2536	Crypted.exe
Token: SeCreatePagefilePrivilege	2536	Crypted.exe
Token: SeBackupPrivilege	2536	Crypted.exe
Token: SeRestorePrivilege	2536	Crypted.exe
Token: SeShutdownPrivilege	2536	Crypted.exe
Token: SeDebugPrivilege	2536	Crypted.exe
Token: SeSystemEnvironmentPrivilege	2536	Crypted.exe
Token: SeChangeNotifyPrivilege	2536	Crypted.exe
Token: SeRemoteShutdownPrivilege	2536	Crypted.exe
Token: SeUndockPrivilege	2536	Crypted.exe
Token: SeManageVolumePrivilege	2536	Crypted.exe
Token: SeImpersonatePrivilege	2536	Crypted.exe
Token: SeCreateGlobalPrivilege	2536	Crypted.exe
Token: 33	2536	Crypted.exe
Token: 34	2536	Crypted.exe
Token: 35	2536	Crypted.exe
Token: SeIncreaseQuotaPrivilege	2272	winupdate.exe
Token: SeSecurityPrivilege	2272	winupdate.exe
Token: SeTakeOwnershipPrivilege	2272	winupdate.exe
Token: SeLoadDriverPrivilege	2272	winupdate.exe
Token: SeSystemProfilePrivilege	2272	winupdate.exe
Token: SeSystemtimePrivilege	2272	winupdate.exe
Token: SeProfSingleProcessPrivilege	2272	winupdate.exe
Token: SeIncBasePriorityPrivilege	2272	winupdate.exe
Token: SeCreatePagefilePrivilege	2272	winupdate.exe
Token: SeBackupPrivilege	2272	winupdate.exe
Token: SeRestorePrivilege	2272	winupdate.exe
Token: SeShutdownPrivilege	2272	winupdate.exe
Token: SeDebugPrivilege	2272	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2272	winupdate.exe
Token: SeChangeNotifyPrivilege	2272	winupdate.exe
Token: SeRemoteShutdownPrivilege	2272	winupdate.exe
Token: SeUndockPrivilege	2272	winupdate.exe
Token: SeManageVolumePrivilege	2272	winupdate.exe
Token: SeImpersonatePrivilege	2272	winupdate.exe
Token: SeCreateGlobalPrivilege	2272	winupdate.exe
Token: 33	2272	winupdate.exe
Token: 34	2272	winupdate.exe
Token: 35	2272	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2272	winupdate.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1852 wrote to memory of 2536	1852	bf23736194158362c62bc047048ce57c_JaffaCakes118.exe	31
PID 1852 wrote to memory of 2536	1852	bf23736194158362c62bc047048ce57c_JaffaCakes118.exe	31
PID 1852 wrote to memory of 2536	1852	bf23736194158362c62bc047048ce57c_JaffaCakes118.exe	31
PID 1852 wrote to memory of 2536	1852	bf23736194158362c62bc047048ce57c_JaffaCakes118.exe	31
PID 2536 wrote to memory of 2272	2536	Crypted.exe	32
PID 2536 wrote to memory of 2272	2536	Crypted.exe	32
PID 2536 wrote to memory of 2272	2536	Crypted.exe	32
PID 2536 wrote to memory of 2272	2536	Crypted.exe	32
PID 2536 wrote to memory of 2272	2536	Crypted.exe	32
PID 2536 wrote to memory of 2272	2536	Crypted.exe	32
PID 2536 wrote to memory of 2272	2536	Crypted.exe	32

C:\Users\Admin\AppData\Local\Temp\bf23736194158362c62bc047048ce57c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\bf23736194158362c62bc047048ce57c_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1852
- C:\Users\Admin\AppData\Local\Temp\Crypted.exe
  "C:\Users\Admin\AppData\Local\Temp\Crypted.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Executes dropped EXE
  - 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:2536
- - C:\Windupdt\winupdate.exe
    "C:\Windupdt\winupdate.exe"
    3⤵
    - 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
    - Suspicious use of SetWindowsHookEx
    PID:2272

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

System Information Discovery