darkcomet | cca77ef16e89bff979f6abf9b435cf7c433f664f6003648a4645530c37a857a4

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\system32/winlogon.exe"	Crypted.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
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1"	Crypted.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	Crypted.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "1"	Crypted.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"	Crypted.exe

Windows security bypass 2 TTPs 2 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"	Crypted.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	Crypted.exe

Disables Task Manager via registry modification
defense_evasion

Checks BIOS information in registry 2 TTPs 1 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

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-1-5-21-3920955164-3782810283-1225622749-1000\Control Panel\International\Geo\Nation	JaffaCakes118_929f77a47a4a33455ccdb7366ef0ff98.exe

Executes dropped EXE 1 IoCs

pid	Process
4464	Crypted.exe

Windows security modification 2 TTPs 2 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"	Crypted.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	Crypted.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-1-5-21-3920955164-3782810283-1225622749-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlogon = "C:\\system32/winlogon.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 1 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	Crypted.exe

Checks processor information in registry 2 TTPs 4 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	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 1 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	Crypted.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4464	Crypted.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4464	Crypted.exe
Token: SeSecurityPrivilege	4464	Crypted.exe
Token: SeTakeOwnershipPrivilege	4464	Crypted.exe
Token: SeLoadDriverPrivilege	4464	Crypted.exe
Token: SeSystemProfilePrivilege	4464	Crypted.exe
Token: SeSystemtimePrivilege	4464	Crypted.exe
Token: SeProfSingleProcessPrivilege	4464	Crypted.exe
Token: SeIncBasePriorityPrivilege	4464	Crypted.exe
Token: SeCreatePagefilePrivilege	4464	Crypted.exe
Token: SeBackupPrivilege	4464	Crypted.exe
Token: SeRestorePrivilege	4464	Crypted.exe
Token: SeShutdownPrivilege	4464	Crypted.exe
Token: SeDebugPrivilege	4464	Crypted.exe
Token: SeSystemEnvironmentPrivilege	4464	Crypted.exe
Token: SeChangeNotifyPrivilege	4464	Crypted.exe
Token: SeRemoteShutdownPrivilege	4464	Crypted.exe
Token: SeUndockPrivilege	4464	Crypted.exe
Token: SeManageVolumePrivilege	4464	Crypted.exe
Token: SeImpersonatePrivilege	4464	Crypted.exe
Token: SeCreateGlobalPrivilege	4464	Crypted.exe
Token: 33	4464	Crypted.exe
Token: 34	4464	Crypted.exe
Token: 35	4464	Crypted.exe
Token: 36	4464	Crypted.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4464	Crypted.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5656 wrote to memory of 4464	5656	JaffaCakes118_929f77a47a4a33455ccdb7366ef0ff98.exe	86
PID 5656 wrote to memory of 4464	5656	JaffaCakes118_929f77a47a4a33455ccdb7366ef0ff98.exe	86
PID 5656 wrote to memory of 4464	5656	JaffaCakes118_929f77a47a4a33455ccdb7366ef0ff98.exe	86

System policy modification 1 TTPs 3 IoCs

defense_evasion

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	Crypted.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	Crypted.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	Crypted.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_929f77a47a4a33455ccdb7366ef0ff98.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_929f77a47a4a33455ccdb7366ef0ff98.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5656
- C:\Users\Admin\AppData\Local\Temp\Crypted.exe
  "C:\Users\Admin\AppData\Local\Temp\Crypted.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Modifies firewall policy service
  - Modifies security service
  - Windows security bypass
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Windows security modification
  - Adds Run key to start application
  - 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
  - System policy modification
  PID:4464

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\system32/winlogon.exe
1⤵
PID:4244

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

3

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Query Registry

4

System Information Discovery

5

System Location Discovery

T1614

System Language Discovery