darkcomet | f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8

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\\System.exe"	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.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	System.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	System.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	System.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"	System.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"	System.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	System.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"	System.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
3864	attrib.exe
3472	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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe

Executes dropped EXE 1 IoCs

pid	Process
3776	System.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"	System.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	System.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\System = "C:\\Users\\Admin\\Documents\\MSDCSC\\System.exe"	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.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 7 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	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	System.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3776	System.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: SeSecurityPrivilege	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: SeTakeOwnershipPrivilege	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: SeLoadDriverPrivilege	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: SeSystemProfilePrivilege	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: SeSystemtimePrivilege	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: SeProfSingleProcessPrivilege	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: SeIncBasePriorityPrivilege	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: SeCreatePagefilePrivilege	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: SeBackupPrivilege	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: SeRestorePrivilege	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: SeShutdownPrivilege	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: SeDebugPrivilege	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: SeSystemEnvironmentPrivilege	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: SeChangeNotifyPrivilege	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: SeRemoteShutdownPrivilege	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: SeUndockPrivilege	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: SeManageVolumePrivilege	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: SeImpersonatePrivilege	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: SeCreateGlobalPrivilege	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: 33	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: 34	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: 35	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: 36	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
Token: SeIncreaseQuotaPrivilege	3776	System.exe
Token: SeSecurityPrivilege	3776	System.exe
Token: SeTakeOwnershipPrivilege	3776	System.exe
Token: SeLoadDriverPrivilege	3776	System.exe
Token: SeSystemProfilePrivilege	3776	System.exe
Token: SeSystemtimePrivilege	3776	System.exe
Token: SeProfSingleProcessPrivilege	3776	System.exe
Token: SeIncBasePriorityPrivilege	3776	System.exe
Token: SeCreatePagefilePrivilege	3776	System.exe
Token: SeBackupPrivilege	3776	System.exe
Token: SeRestorePrivilege	3776	System.exe
Token: SeShutdownPrivilege	3776	System.exe
Token: SeDebugPrivilege	3776	System.exe
Token: SeSystemEnvironmentPrivilege	3776	System.exe
Token: SeChangeNotifyPrivilege	3776	System.exe
Token: SeRemoteShutdownPrivilege	3776	System.exe
Token: SeUndockPrivilege	3776	System.exe
Token: SeManageVolumePrivilege	3776	System.exe
Token: SeImpersonatePrivilege	3776	System.exe
Token: SeCreateGlobalPrivilege	3776	System.exe
Token: 33	3776	System.exe
Token: 34	3776	System.exe
Token: 35	3776	System.exe
Token: 36	3776	System.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3776	System.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 3556 wrote to memory of 1372	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe	83
PID 3556 wrote to memory of 1372	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe	83
PID 3556 wrote to memory of 1372	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe	83
PID 3556 wrote to memory of 1868	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe	84
PID 3556 wrote to memory of 1868	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe	84
PID 3556 wrote to memory of 1868	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe	84
PID 1372 wrote to memory of 3864	1372	cmd.exe	87
PID 1372 wrote to memory of 3864	1372	cmd.exe	87
PID 1372 wrote to memory of 3864	1372	cmd.exe	87
PID 1868 wrote to memory of 3472	1868	cmd.exe	88
PID 1868 wrote to memory of 3472	1868	cmd.exe	88
PID 1868 wrote to memory of 3472	1868	cmd.exe	88
PID 3556 wrote to memory of 3776	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe	90
PID 3556 wrote to memory of 3776	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe	90
PID 3556 wrote to memory of 3776	3556	f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe	90
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91
PID 3776 wrote to memory of 4408	3776	System.exe	91

System policy modification 1 TTPs 3 IoCs

Modify Registry

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

Views/modifies file attributes 1 TTPs 2 IoCs

Hidden Files and Directories

T1564.001

pid	Process
3864	attrib.exe
3472	attrib.exe

C:\Users\Admin\AppData\Local\Temp\f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe
"C:\Users\Admin\AppData\Local\Temp\f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3556
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1372
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\f05d4b5a46ea65ecea6f6c966a9d94456e216fd26c789225fda09ef7f5e2f1c8N.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:3864
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1868
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:3472
- C:\Users\Admin\Documents\MSDCSC\System.exe
  "C:\Users\Admin\Documents\MSDCSC\System.exe"
  2⤵
  - 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:3776
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4408

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 System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry