darkcomet | 4c3273a1f018603e24b1caf53284c226fc8ef5ef0ced232605fe0e22e8f3a27b

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	0387bac0c095a5d24fea2bcabdcd4748.exe

Modifies firewall policy service 2 TTPs 3 IoCs

Modify Registry

Windows Service

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-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Disables Task Manager via registry modification
evasion

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
4852	attrib.exe
1480	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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	0387bac0c095a5d24fea2bcabdcd4748.exe

Executes dropped EXE 1 IoCs

pid	Process
2068	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 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	0387bac0c095a5d24fea2bcabdcd4748.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\	0387bac0c095a5d24fea2bcabdcd4748.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4984	PING.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2068	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: SeSecurityPrivilege	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: SeTakeOwnershipPrivilege	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: SeLoadDriverPrivilege	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: SeSystemProfilePrivilege	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: SeSystemtimePrivilege	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: SeProfSingleProcessPrivilege	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: SeIncBasePriorityPrivilege	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: SeCreatePagefilePrivilege	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: SeBackupPrivilege	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: SeRestorePrivilege	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: SeShutdownPrivilege	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: SeDebugPrivilege	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: SeSystemEnvironmentPrivilege	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: SeChangeNotifyPrivilege	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: SeRemoteShutdownPrivilege	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: SeUndockPrivilege	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: SeManageVolumePrivilege	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: SeImpersonatePrivilege	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: SeCreateGlobalPrivilege	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: 33	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: 34	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: 35	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: 36	1428	0387bac0c095a5d24fea2bcabdcd4748.exe
Token: SeIncreaseQuotaPrivilege	2068	msdcsc.exe
Token: SeSecurityPrivilege	2068	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2068	msdcsc.exe
Token: SeLoadDriverPrivilege	2068	msdcsc.exe
Token: SeSystemProfilePrivilege	2068	msdcsc.exe
Token: SeSystemtimePrivilege	2068	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2068	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2068	msdcsc.exe
Token: SeCreatePagefilePrivilege	2068	msdcsc.exe
Token: SeBackupPrivilege	2068	msdcsc.exe
Token: SeRestorePrivilege	2068	msdcsc.exe
Token: SeShutdownPrivilege	2068	msdcsc.exe
Token: SeDebugPrivilege	2068	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2068	msdcsc.exe
Token: SeChangeNotifyPrivilege	2068	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2068	msdcsc.exe
Token: SeUndockPrivilege	2068	msdcsc.exe
Token: SeManageVolumePrivilege	2068	msdcsc.exe
Token: SeImpersonatePrivilege	2068	msdcsc.exe
Token: SeCreateGlobalPrivilege	2068	msdcsc.exe
Token: 33	2068	msdcsc.exe
Token: 34	2068	msdcsc.exe
Token: 35	2068	msdcsc.exe
Token: 36	2068	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2068	msdcsc.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1428 wrote to memory of 392	1428	0387bac0c095a5d24fea2bcabdcd4748.exe	91
PID 1428 wrote to memory of 392	1428	0387bac0c095a5d24fea2bcabdcd4748.exe	91
PID 1428 wrote to memory of 392	1428	0387bac0c095a5d24fea2bcabdcd4748.exe	91
PID 1428 wrote to memory of 2812	1428	0387bac0c095a5d24fea2bcabdcd4748.exe	92
PID 1428 wrote to memory of 2812	1428	0387bac0c095a5d24fea2bcabdcd4748.exe	92
PID 1428 wrote to memory of 2812	1428	0387bac0c095a5d24fea2bcabdcd4748.exe	92
PID 1428 wrote to memory of 3404	1428	0387bac0c095a5d24fea2bcabdcd4748.exe	95
PID 1428 wrote to memory of 3404	1428	0387bac0c095a5d24fea2bcabdcd4748.exe	95
PID 1428 wrote to memory of 3404	1428	0387bac0c095a5d24fea2bcabdcd4748.exe	95
PID 392 wrote to memory of 4852	392	cmd.exe	97
PID 392 wrote to memory of 4852	392	cmd.exe	97
PID 392 wrote to memory of 4852	392	cmd.exe	97
PID 2812 wrote to memory of 1480	2812	cmd.exe	99
PID 2812 wrote to memory of 1480	2812	cmd.exe	99
PID 2812 wrote to memory of 1480	2812	cmd.exe	99
PID 3404 wrote to memory of 4984	3404	cmd.exe	98
PID 3404 wrote to memory of 4984	3404	cmd.exe	98
PID 3404 wrote to memory of 4984	3404	cmd.exe	98
PID 1428 wrote to memory of 2068	1428	0387bac0c095a5d24fea2bcabdcd4748.exe	100
PID 1428 wrote to memory of 2068	1428	0387bac0c095a5d24fea2bcabdcd4748.exe	100
PID 1428 wrote to memory of 2068	1428	0387bac0c095a5d24fea2bcabdcd4748.exe	100
PID 2068 wrote to memory of 4420	2068	msdcsc.exe	102
PID 2068 wrote to memory of 4420	2068	msdcsc.exe	102
PID 2068 wrote to memory of 4420	2068	msdcsc.exe	102
PID 2068 wrote to memory of 868	2068	msdcsc.exe	104
PID 2068 wrote to memory of 868	2068	msdcsc.exe	104

Views/modifies file attributes 1 TTPs 2 IoCs

Hidden Files and Directories

T1564.001

pid	Process
4852	attrib.exe
1480	attrib.exe

C:\Users\Admin\AppData\Local\Temp\0387bac0c095a5d24fea2bcabdcd4748.exe
"C:\Users\Admin\AppData\Local\Temp\0387bac0c095a5d24fea2bcabdcd4748.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:1428
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\0387bac0c095a5d24fea2bcabdcd4748.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:392
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\0387bac0c095a5d24fea2bcabdcd4748.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:4852
- 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:2812
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:1480
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 4 && del "C:\Users\Admin\AppData\Local\Temp\0387bac0c095a5d24fea2bcabdcd4748.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3404
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 4
    3⤵
    - Runs ping.exe
    PID:4984
- C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
  "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
  2⤵
  - Modifies firewall policy service
  - Modifies security service
  - Windows security bypass
  - Disables RegEdit via registry modification
  - Executes dropped EXE
  - Windows security modification
  - Adds Run key to start application
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2068
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    PID:4420
- - C:\Windows\explorer.exe
    "C:\Windows\explorer.exe"
    3⤵
    PID:868

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