darkcomet | 5efe38d9dfcc868f9d4e101efc39fe89c9865d6ad55de74b030b25bf72e935a2

Processes:

1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\Windupdt\\winupdate.exe"	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe

Modifies firewall policy service 2 TTPs 3 IoCs

Modify Registry

Windows Service

Processes:

winupdate.exe

description	ioc	Process
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
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "1"	winupdate.exe

Modifies security service 2 TTPs 1 IoCs

Modify Registry

Windows Service

Processes:

winupdate.exe

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

Processes:

winupdate.exe

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

Disables RegEdit via registry modification 1 IoCs

Processes:

winupdate.exe

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	winupdate.exe

Disables Task Manager via registry modification
evasion

Drops file in Drivers directory 1 IoCs

Processes:

1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	1f97df62030c674d61a88e16bd060018_JaffaCakes118.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

Processes:

winupdate.exe1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	1f97df62030c674d61a88e16bd060018_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

Processes:

1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\Control Panel\International\Geo\Nation	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

winupdate.exe

pid	Process
1856	winupdate.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

Processes:

winupdate.exe

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

Processes:

1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3726321484-1950364574-433157660-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Windupdt\\winupdate.exe"	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe

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

Processes:

winupdate.exe1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe

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	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

Processes:

1f97df62030c674d61a88e16bd060018_JaffaCakes118.exewinupdate.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

winupdate.exe

pid	Process
1856	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

1f97df62030c674d61a88e16bd060018_JaffaCakes118.exewinupdate.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: SeSecurityPrivilege	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: SeSystemtimePrivilege	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: SeBackupPrivilege	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: SeRestorePrivilege	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: SeShutdownPrivilege	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: SeDebugPrivilege	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: SeUndockPrivilege	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: SeManageVolumePrivilege	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: SeImpersonatePrivilege	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: 33	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: 34	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: 35	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: 36	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	1856	winupdate.exe
Token: SeSecurityPrivilege	1856	winupdate.exe
Token: SeTakeOwnershipPrivilege	1856	winupdate.exe
Token: SeLoadDriverPrivilege	1856	winupdate.exe
Token: SeSystemProfilePrivilege	1856	winupdate.exe
Token: SeSystemtimePrivilege	1856	winupdate.exe
Token: SeProfSingleProcessPrivilege	1856	winupdate.exe
Token: SeIncBasePriorityPrivilege	1856	winupdate.exe
Token: SeCreatePagefilePrivilege	1856	winupdate.exe
Token: SeBackupPrivilege	1856	winupdate.exe
Token: SeRestorePrivilege	1856	winupdate.exe
Token: SeShutdownPrivilege	1856	winupdate.exe
Token: SeDebugPrivilege	1856	winupdate.exe
Token: SeSystemEnvironmentPrivilege	1856	winupdate.exe
Token: SeChangeNotifyPrivilege	1856	winupdate.exe
Token: SeRemoteShutdownPrivilege	1856	winupdate.exe
Token: SeUndockPrivilege	1856	winupdate.exe
Token: SeManageVolumePrivilege	1856	winupdate.exe
Token: SeImpersonatePrivilege	1856	winupdate.exe
Token: SeCreateGlobalPrivilege	1856	winupdate.exe
Token: 33	1856	winupdate.exe
Token: 34	1856	winupdate.exe
Token: 35	1856	winupdate.exe
Token: 36	1856	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

winupdate.exe

pid	Process
1856	winupdate.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

1f97df62030c674d61a88e16bd060018_JaffaCakes118.exewinupdate.exe

description	pid	Process	procid_target
PID 3764 wrote to memory of 3724	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe	96
PID 3764 wrote to memory of 3724	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe	96
PID 3764 wrote to memory of 3724	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe	96
PID 3764 wrote to memory of 1856	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe	97
PID 3764 wrote to memory of 1856	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe	97
PID 3764 wrote to memory of 1856	3764	1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe	97
PID 1856 wrote to memory of 1164	1856	winupdate.exe	98
PID 1856 wrote to memory of 1164	1856	winupdate.exe	98
PID 1856 wrote to memory of 1164	1856	winupdate.exe	98

System policy modification 1 TTPs 3 IoCs

Modify Registry

Processes:

winupdate.exe

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\1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1f97df62030c674d61a88e16bd060018_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in Drivers directory
- 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:3764
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  PID:3724
- C:\Users\Admin\AppData\Local\Temp\Windupdt\winupdate.exe
  "C:\Users\Admin\AppData\Local\Temp\Windupdt\winupdate.exe"
  2⤵
  - Modifies firewall policy service
  - Modifies security service
  - Windows security bypass
  - Disables RegEdit via registry modification
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Windows security modification
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:1856
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    PID:1164

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 Tools

T1562.001

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery