darkcomet | cc00f80a830956c5c1344742e632c9f057b283ded101dc0dd4fd9a7ea95d4017

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\lsass\\lsass.exe"	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe

Modifies firewall policy service 3 TTPs 3 IoCs

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"	explorer.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	explorer.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "1"	explorer.exe

Modifies security service 2 TTPs 1 IoCs

evasion

Modify Registry

Windows Service

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

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	explorer.exe

Disables Task Manager via registry modification
evasion

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	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	explorer.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-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Windows\CurrentVersion\Run\lsass = "C:\\lsass\\lsass.exe"	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2844 set thread context of 2968	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe	80

UPX packed file 14 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2844-0-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2968-5-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2968-6-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2844-10-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2968-7-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2968-12-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2968-14-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2968-17-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2968-16-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2968-15-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2968-13-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2968-9-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2968-11-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/2968-19-0x0000000000400000-0x00000000004B5000-memory.dmp	upx

System Location Discovery: System Language Discovery 1 TTPs 2 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	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.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	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	explorer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	3f8186863141e36ce609292a3da36e83_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	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2968	explorer.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: SeSecurityPrivilege	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: SeBackupPrivilege	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: SeRestorePrivilege	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: SeShutdownPrivilege	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: SeDebugPrivilege	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: SeUndockPrivilege	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: 33	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: 34	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: 35	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: 36	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2968	explorer.exe
Token: SeSecurityPrivilege	2968	explorer.exe
Token: SeTakeOwnershipPrivilege	2968	explorer.exe
Token: SeLoadDriverPrivilege	2968	explorer.exe
Token: SeSystemProfilePrivilege	2968	explorer.exe
Token: SeSystemtimePrivilege	2968	explorer.exe
Token: SeProfSingleProcessPrivilege	2968	explorer.exe
Token: SeIncBasePriorityPrivilege	2968	explorer.exe
Token: SeCreatePagefilePrivilege	2968	explorer.exe
Token: SeBackupPrivilege	2968	explorer.exe
Token: SeRestorePrivilege	2968	explorer.exe
Token: SeShutdownPrivilege	2968	explorer.exe
Token: SeDebugPrivilege	2968	explorer.exe
Token: SeSystemEnvironmentPrivilege	2968	explorer.exe
Token: SeChangeNotifyPrivilege	2968	explorer.exe
Token: SeRemoteShutdownPrivilege	2968	explorer.exe
Token: SeUndockPrivilege	2968	explorer.exe
Token: SeManageVolumePrivilege	2968	explorer.exe
Token: SeImpersonatePrivilege	2968	explorer.exe
Token: SeCreateGlobalPrivilege	2968	explorer.exe
Token: 33	2968	explorer.exe
Token: 34	2968	explorer.exe
Token: 35	2968	explorer.exe
Token: 36	2968	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2968	explorer.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 2968	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe	80
PID 2844 wrote to memory of 2968	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe	80
PID 2844 wrote to memory of 2968	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe	80
PID 2844 wrote to memory of 2968	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe	80
PID 2844 wrote to memory of 2968	2844	3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe	80

C:\Users\Admin\AppData\Local\Temp\3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3f8186863141e36ce609292a3da36e83_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Adds Run key to start application
- Suspicious use of SetThreadContext
- 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:2844
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  - Modifies firewall policy service
  - Modifies security service
  - Disables RegEdit via registry modification
  - Checks BIOS information in registry
  - 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:2968

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 System Firewall

T1562.004

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery