darkcomet | cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429

Processes:

cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe

Modifies security service 2 TTPs 1 IoCs
evasion

Modify Registry
T1112

Modify Existing Service
T1031

Processes:

msdcsc.exe

description ioc process

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

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

Disabling Security Tools

T1089

Modify Registry

Processes:

msdcsc.exe

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

Executes dropped EXE 2 IoCs

Processes:

CG_LOADER.EXEmsdcsc.exe

pid process

2960 CG_LOADER.EXE
4192 msdcsc.exe
Sets file to hidden 1 TTPs 1 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

1472 attrib.exe

pid	process
2960	CG_LOADER.EXE
4192	msdcsc.exe

pid	process
1472	attrib.exe

VMProtect packed file 3 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\CG_LOADER.EXE	vmprotect
C:\Users\Admin\AppData\Local\Temp\CG_LOADER.EXE	vmprotect
behavioral2/memory/2960-141-0x0000000000110000-0x0000000001C9C000-memory.dmp	vmprotect

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

Processes:

cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

Processes:

msdcsc.exe

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

T1060

Modify Registry

Processes:

cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Drops file in System32 directory 3 IoCs

Processes:

cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe

description	ioc	process
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe

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

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

CG_LOADER.EXE

pid process

2960 CG_LOADER.EXE

pid	process
2960	CG_LOADER.EXE

Suspicious use of AdjustPrivilegeToken 49 IoCs

Processes:

cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exemsdcsc.exeCG_LOADER.EXE

description	pid	process
Token: SeIncreaseQuotaPrivilege	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: SeSecurityPrivilege	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: SeTakeOwnershipPrivilege	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: SeLoadDriverPrivilege	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: SeSystemProfilePrivilege	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: SeSystemtimePrivilege	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: SeProfSingleProcessPrivilege	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: SeIncBasePriorityPrivilege	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: SeCreatePagefilePrivilege	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: SeBackupPrivilege	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: SeRestorePrivilege	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: SeShutdownPrivilege	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: SeDebugPrivilege	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: SeSystemEnvironmentPrivilege	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: SeChangeNotifyPrivilege	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: SeRemoteShutdownPrivilege	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: SeUndockPrivilege	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: SeManageVolumePrivilege	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: SeImpersonatePrivilege	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: SeCreateGlobalPrivilege	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: 33	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: 34	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: 35	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: 36	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
Token: SeIncreaseQuotaPrivilege	4192	msdcsc.exe
Token: SeSecurityPrivilege	4192	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4192	msdcsc.exe
Token: SeLoadDriverPrivilege	4192	msdcsc.exe
Token: SeSystemProfilePrivilege	4192	msdcsc.exe
Token: SeSystemtimePrivilege	4192	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4192	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4192	msdcsc.exe
Token: SeCreatePagefilePrivilege	4192	msdcsc.exe
Token: SeBackupPrivilege	4192	msdcsc.exe
Token: SeRestorePrivilege	4192	msdcsc.exe
Token: SeShutdownPrivilege	4192	msdcsc.exe
Token: SeDebugPrivilege	4192	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4192	msdcsc.exe
Token: SeChangeNotifyPrivilege	4192	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4192	msdcsc.exe
Token: SeUndockPrivilege	4192	msdcsc.exe
Token: SeManageVolumePrivilege	4192	msdcsc.exe
Token: SeImpersonatePrivilege	4192	msdcsc.exe
Token: SeCreateGlobalPrivilege	4192	msdcsc.exe
Token: 33	4192	msdcsc.exe
Token: 34	4192	msdcsc.exe
Token: 35	4192	msdcsc.exe
Token: 36	4192	msdcsc.exe
Token: SeDebugPrivilege	2960	CG_LOADER.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

4192 msdcsc.exe

pid	process
4192	msdcsc.exe

Suspicious use of WriteProcessMemory 34 IoCs

Processes:

cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.execmd.exemsdcsc.exe

description	pid	process	target process
PID 4932 wrote to memory of 1568	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe	cmd.exe
PID 4932 wrote to memory of 1568	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe	cmd.exe
PID 4932 wrote to memory of 1568	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe	cmd.exe
PID 1568 wrote to memory of 1472	1568	cmd.exe	attrib.exe
PID 1568 wrote to memory of 1472	1568	cmd.exe	attrib.exe
PID 1568 wrote to memory of 1472	1568	cmd.exe	attrib.exe
PID 4932 wrote to memory of 2960	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe	CG_LOADER.EXE
PID 4932 wrote to memory of 2960	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe	CG_LOADER.EXE
PID 4932 wrote to memory of 2960	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe	CG_LOADER.EXE
PID 4932 wrote to memory of 4192	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe	msdcsc.exe
PID 4932 wrote to memory of 4192	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe	msdcsc.exe
PID 4932 wrote to memory of 4192	4932	cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe	msdcsc.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe
PID 4192 wrote to memory of 364	4192	msdcsc.exe	notepad.exe

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

Processes:

msdcsc.exe

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

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

1472 attrib.exe

pid	process
1472	attrib.exe

C:\Users\Admin\AppData\Local\Temp\cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe
"C:\Users\Admin\AppData\Local\Temp\cfcec6c8cf70f706967aa83596fa301a86685059869e6d5183cd1a6ebd8ef429.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4932

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:1568

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:1472

C:\Users\Admin\AppData\Local\Temp\CG_LOADER.EXE
"C:\Users\Admin\AppData\Local\Temp\CG_LOADER.EXE"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2960

C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
"C:\Windows\system32\MSDCSC\msdcsc.exe"
2⤵
- Modifies security service
- Windows security bypass
- Executes dropped EXE
- Windows security modification
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4192

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:364

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

T1004

Modify Existing Service

T1031

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

6

Disabling Security Tools

T1089

Hidden Files and Directories

T1158

Credential Access

Discovery

Query Registry

T1012

System Information Discovery