darkcomet | 968e227aaa6b1ecdfdfc22890d8e5ae61ab9ff24913bcbf54638e5c2218bf299

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\SystemDrivers\\jdriver.exe"	b816b944ff6ac1be2f6054936e785b33.exe

Modifies firewall policy service 2 TTPs 3 IoCs

Modify Registry

Windows Service

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

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

Hidden Files and Directories

T1564.001

pid	Process
2840	attrib.exe
4712	attrib.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	b816b944ff6ac1be2f6054936e785b33.exe

Executes dropped EXE 1 IoCs

pid	Process
2784	jdriver.exe

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2872-0-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/files/0x0007000000023226-6.dat	upx
behavioral2/memory/2872-36-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2784-35-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2784-38-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2784-39-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2784-40-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2784-41-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2784-42-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2784-43-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2784-44-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2784-45-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2784-46-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2784-47-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2784-48-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2784-49-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2784-50-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2784-51-0x0000000000400000-0x00000000004B9000-memory.dmp	upx
behavioral2/memory/2784-52-0x0000000000400000-0x00000000004B9000-memory.dmp	upx

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"	jdriver.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System Drivers = "C:\\SystemDrivers\\jdriver.exe"	jdriver.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System Drivers = "C:\\SystemDrivers\\jdriver.exe"	b816b944ff6ac1be2f6054936e785b33.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	b816b944ff6ac1be2f6054936e785b33.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5076	PING.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2784	jdriver.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: SeSecurityPrivilege	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: SeTakeOwnershipPrivilege	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: SeLoadDriverPrivilege	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: SeSystemProfilePrivilege	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: SeSystemtimePrivilege	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: SeProfSingleProcessPrivilege	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: SeIncBasePriorityPrivilege	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: SeCreatePagefilePrivilege	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: SeBackupPrivilege	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: SeRestorePrivilege	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: SeShutdownPrivilege	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: SeDebugPrivilege	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: SeSystemEnvironmentPrivilege	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: SeChangeNotifyPrivilege	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: SeRemoteShutdownPrivilege	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: SeUndockPrivilege	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: SeManageVolumePrivilege	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: SeImpersonatePrivilege	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: SeCreateGlobalPrivilege	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: 33	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: 34	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: 35	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: 36	2872	b816b944ff6ac1be2f6054936e785b33.exe
Token: SeIncreaseQuotaPrivilege	2784	jdriver.exe
Token: SeSecurityPrivilege	2784	jdriver.exe
Token: SeTakeOwnershipPrivilege	2784	jdriver.exe
Token: SeLoadDriverPrivilege	2784	jdriver.exe
Token: SeSystemProfilePrivilege	2784	jdriver.exe
Token: SeSystemtimePrivilege	2784	jdriver.exe
Token: SeProfSingleProcessPrivilege	2784	jdriver.exe
Token: SeIncBasePriorityPrivilege	2784	jdriver.exe
Token: SeCreatePagefilePrivilege	2784	jdriver.exe
Token: SeBackupPrivilege	2784	jdriver.exe
Token: SeRestorePrivilege	2784	jdriver.exe
Token: SeShutdownPrivilege	2784	jdriver.exe
Token: SeDebugPrivilege	2784	jdriver.exe
Token: SeSystemEnvironmentPrivilege	2784	jdriver.exe
Token: SeChangeNotifyPrivilege	2784	jdriver.exe
Token: SeRemoteShutdownPrivilege	2784	jdriver.exe
Token: SeUndockPrivilege	2784	jdriver.exe
Token: SeManageVolumePrivilege	2784	jdriver.exe
Token: SeImpersonatePrivilege	2784	jdriver.exe
Token: SeCreateGlobalPrivilege	2784	jdriver.exe
Token: 33	2784	jdriver.exe
Token: 34	2784	jdriver.exe
Token: 35	2784	jdriver.exe
Token: 36	2784	jdriver.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2784	jdriver.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 4728	2872	b816b944ff6ac1be2f6054936e785b33.exe	91
PID 2872 wrote to memory of 4728	2872	b816b944ff6ac1be2f6054936e785b33.exe	91
PID 2872 wrote to memory of 4728	2872	b816b944ff6ac1be2f6054936e785b33.exe	91
PID 2872 wrote to memory of 4736	2872	b816b944ff6ac1be2f6054936e785b33.exe	93
PID 2872 wrote to memory of 4736	2872	b816b944ff6ac1be2f6054936e785b33.exe	93
PID 2872 wrote to memory of 4736	2872	b816b944ff6ac1be2f6054936e785b33.exe	93
PID 4728 wrote to memory of 2840	4728	cmd.exe	95
PID 4728 wrote to memory of 2840	4728	cmd.exe	95
PID 4728 wrote to memory of 2840	4728	cmd.exe	95
PID 4736 wrote to memory of 4712	4736	cmd.exe	96
PID 4736 wrote to memory of 4712	4736	cmd.exe	96
PID 4736 wrote to memory of 4712	4736	cmd.exe	96
PID 2872 wrote to memory of 2784	2872	b816b944ff6ac1be2f6054936e785b33.exe	97
PID 2872 wrote to memory of 2784	2872	b816b944ff6ac1be2f6054936e785b33.exe	97
PID 2872 wrote to memory of 2784	2872	b816b944ff6ac1be2f6054936e785b33.exe	97
PID 2872 wrote to memory of 1748	2872	b816b944ff6ac1be2f6054936e785b33.exe	98
PID 2872 wrote to memory of 1748	2872	b816b944ff6ac1be2f6054936e785b33.exe	98
PID 2872 wrote to memory of 1748	2872	b816b944ff6ac1be2f6054936e785b33.exe	98
PID 1748 wrote to memory of 5076	1748	cmd.exe	100
PID 1748 wrote to memory of 5076	1748	cmd.exe	100
PID 1748 wrote to memory of 5076	1748	cmd.exe	100

Views/modifies file attributes 1 TTPs 2 IoCs

Hidden Files and Directories

T1564.001

pid	Process
2840	attrib.exe
4712	attrib.exe

C:\Users\Admin\AppData\Local\Temp\b816b944ff6ac1be2f6054936e785b33.exe
"C:\Users\Admin\AppData\Local\Temp\b816b944ff6ac1be2f6054936e785b33.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2872
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\b816b944ff6ac1be2f6054936e785b33.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4728
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\b816b944ff6ac1be2f6054936e785b33.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:2840
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4736
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:4712
- C:\SystemDrivers\jdriver.exe
  "C:\SystemDrivers\jdriver.exe"
  2⤵
  - Modifies firewall policy service
  - Modifies security service
  - Windows security bypass
  - Executes dropped EXE
  - Windows security modification
  - Adds Run key to start application
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2784
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 5 > NUL&del "C:\Users\Admin\AppData\Local\Temp\b816b944ff6ac1be2f6054936e785b33.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1748
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 5
    3⤵
    - Runs ping.exe
    PID:5076

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry