darkcomet | 4c5a7e2f9d2f9c701b370e352bba7a56c6408f37241b8725c497d6e72fd43adc

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	SERVER.EXE

Modifies firewall policy service 3 TTPs 3 IoCs

Modify Registry

Windows Service

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	msdcsc.exe

Modifies security service 2 TTPs 1 IoCs

Modify Registry

Windows Service

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

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

Disables RegEdit via registry modification 1 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Disables Task Manager via registry modification
evasion

Drops file in Drivers directory 1 IoCs

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

Checks computer location settings 2 TTPs 2 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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_6739ada96f2e72226478ba7a2e974d60.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	SERVER.EXE

Executes dropped EXE 2 IoCs

pid	Process
64	SERVER.EXE
1880	msdcsc.exe

Windows security modification 2 TTPs 2 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"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	SERVER.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	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6739ada96f2e72226478ba7a2e974d60.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SERVER.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Checks processor information in registry 2 TTPs 3 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	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\Local Settings	JaffaCakes118_6739ada96f2e72226478ba7a2e974d60.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
532	EXCEL.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1880	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	64	SERVER.EXE
Token: SeSecurityPrivilege	64	SERVER.EXE
Token: SeTakeOwnershipPrivilege	64	SERVER.EXE
Token: SeLoadDriverPrivilege	64	SERVER.EXE
Token: SeSystemProfilePrivilege	64	SERVER.EXE
Token: SeSystemtimePrivilege	64	SERVER.EXE
Token: SeProfSingleProcessPrivilege	64	SERVER.EXE
Token: SeIncBasePriorityPrivilege	64	SERVER.EXE
Token: SeCreatePagefilePrivilege	64	SERVER.EXE
Token: SeBackupPrivilege	64	SERVER.EXE
Token: SeRestorePrivilege	64	SERVER.EXE
Token: SeShutdownPrivilege	64	SERVER.EXE
Token: SeDebugPrivilege	64	SERVER.EXE
Token: SeSystemEnvironmentPrivilege	64	SERVER.EXE
Token: SeChangeNotifyPrivilege	64	SERVER.EXE
Token: SeRemoteShutdownPrivilege	64	SERVER.EXE
Token: SeUndockPrivilege	64	SERVER.EXE
Token: SeManageVolumePrivilege	64	SERVER.EXE
Token: SeImpersonatePrivilege	64	SERVER.EXE
Token: SeCreateGlobalPrivilege	64	SERVER.EXE
Token: 33	64	SERVER.EXE
Token: 34	64	SERVER.EXE
Token: 35	64	SERVER.EXE
Token: 36	64	SERVER.EXE
Token: SeIncreaseQuotaPrivilege	1880	msdcsc.exe
Token: SeSecurityPrivilege	1880	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1880	msdcsc.exe
Token: SeLoadDriverPrivilege	1880	msdcsc.exe
Token: SeSystemProfilePrivilege	1880	msdcsc.exe
Token: SeSystemtimePrivilege	1880	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1880	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1880	msdcsc.exe
Token: SeCreatePagefilePrivilege	1880	msdcsc.exe
Token: SeBackupPrivilege	1880	msdcsc.exe
Token: SeRestorePrivilege	1880	msdcsc.exe
Token: SeShutdownPrivilege	1880	msdcsc.exe
Token: SeDebugPrivilege	1880	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1880	msdcsc.exe
Token: SeChangeNotifyPrivilege	1880	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1880	msdcsc.exe
Token: SeUndockPrivilege	1880	msdcsc.exe
Token: SeManageVolumePrivilege	1880	msdcsc.exe
Token: SeImpersonatePrivilege	1880	msdcsc.exe
Token: SeCreateGlobalPrivilege	1880	msdcsc.exe
Token: 33	1880	msdcsc.exe
Token: 34	1880	msdcsc.exe
Token: 35	1880	msdcsc.exe
Token: 36	1880	msdcsc.exe

Suspicious use of SetWindowsHookEx 13 IoCs

pid	Process
532	EXCEL.EXE
1880	msdcsc.exe
532	EXCEL.EXE
532	EXCEL.EXE
532	EXCEL.EXE
532	EXCEL.EXE
532	EXCEL.EXE
532	EXCEL.EXE
532	EXCEL.EXE
532	EXCEL.EXE
532	EXCEL.EXE
532	EXCEL.EXE
532	EXCEL.EXE

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 624 wrote to memory of 532	624	JaffaCakes118_6739ada96f2e72226478ba7a2e974d60.exe	83
PID 624 wrote to memory of 532	624	JaffaCakes118_6739ada96f2e72226478ba7a2e974d60.exe	83
PID 624 wrote to memory of 532	624	JaffaCakes118_6739ada96f2e72226478ba7a2e974d60.exe	83
PID 624 wrote to memory of 64	624	JaffaCakes118_6739ada96f2e72226478ba7a2e974d60.exe	84
PID 624 wrote to memory of 64	624	JaffaCakes118_6739ada96f2e72226478ba7a2e974d60.exe	84
PID 624 wrote to memory of 64	624	JaffaCakes118_6739ada96f2e72226478ba7a2e974d60.exe	84
PID 64 wrote to memory of 1880	64	SERVER.EXE	85
PID 64 wrote to memory of 1880	64	SERVER.EXE	85
PID 64 wrote to memory of 1880	64	SERVER.EXE	85
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86
PID 1880 wrote to memory of 4332	1880	msdcsc.exe	86

System policy modification 1 TTPs 3 IoCs

Modify Registry

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

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6739ada96f2e72226478ba7a2e974d60.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6739ada96f2e72226478ba7a2e974d60.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:624
- C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
  "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\AOUT 2009.XLSX"
  2⤵
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  PID:532
- C:\Users\Admin\AppData\Local\Temp\SERVER.EXE
  "C:\Users\Admin\AppData\Local\Temp\SERVER.EXE"
  2⤵
  - Modifies WinLogon for persistence
  - Drops file in Drivers directory
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:64
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Modifies firewall policy service
    - Modifies security service
    - Windows security bypass
    - Disables RegEdit via registry modification
    - Executes dropped EXE
    - Windows security modification
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    - System policy modification
    PID:1880
  - - C:\Windows\SysWOW64\notepad.exe
      notepad
      4⤵
      System Location Discovery: System Language Discovery
      PID:4332

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

Disable or Modify Tools

T1562.001

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery