darkcomet | ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa

Processes:

ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\MSDCSC\\msdcsc.exe"	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.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
Windows security bypass 2 TTPs 1 IoCs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

msdcsc.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" msdcsc.exe
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1280 msdcsc.exe
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

4296 attrib.exe
5020 attrib.exe

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

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe

pid	process
1280	msdcsc.exe

pid	process
4296	attrib.exe
5020	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

Processes:

ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe

Windows security modification 2 TTPs 1 IoCs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

msdcsc.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" msdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

Processes:

ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\MSDCSC\\msdcsc.exe"	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\MSDCSC\\msdcsc.exe"	msdcsc.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: SeSecurityPrivilege	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: SeTakeOwnershipPrivilege	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: SeLoadDriverPrivilege	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: SeSystemProfilePrivilege	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: SeSystemtimePrivilege	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: SeProfSingleProcessPrivilege	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: SeIncBasePriorityPrivilege	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: SeCreatePagefilePrivilege	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: SeBackupPrivilege	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: SeRestorePrivilege	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: SeShutdownPrivilege	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: SeDebugPrivilege	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: SeSystemEnvironmentPrivilege	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: SeChangeNotifyPrivilege	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: SeRemoteShutdownPrivilege	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: SeUndockPrivilege	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: SeManageVolumePrivilege	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: SeImpersonatePrivilege	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: SeCreateGlobalPrivilege	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: 33	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: 34	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: 35	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: 36	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
Token: SeIncreaseQuotaPrivilege	1280	msdcsc.exe
Token: SeSecurityPrivilege	1280	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1280	msdcsc.exe
Token: SeLoadDriverPrivilege	1280	msdcsc.exe
Token: SeSystemProfilePrivilege	1280	msdcsc.exe
Token: SeSystemtimePrivilege	1280	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1280	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1280	msdcsc.exe
Token: SeCreatePagefilePrivilege	1280	msdcsc.exe
Token: SeBackupPrivilege	1280	msdcsc.exe
Token: SeRestorePrivilege	1280	msdcsc.exe
Token: SeShutdownPrivilege	1280	msdcsc.exe
Token: SeDebugPrivilege	1280	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1280	msdcsc.exe
Token: SeChangeNotifyPrivilege	1280	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1280	msdcsc.exe
Token: SeUndockPrivilege	1280	msdcsc.exe
Token: SeManageVolumePrivilege	1280	msdcsc.exe
Token: SeImpersonatePrivilege	1280	msdcsc.exe
Token: SeCreateGlobalPrivilege	1280	msdcsc.exe
Token: 33	1280	msdcsc.exe
Token: 34	1280	msdcsc.exe
Token: 35	1280	msdcsc.exe
Token: 36	1280	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1280 msdcsc.exe

pid	process
1280	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 5016 wrote to memory of 4528	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe	cmd.exe
PID 5016 wrote to memory of 4528	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe	cmd.exe
PID 5016 wrote to memory of 4528	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe	cmd.exe
PID 5016 wrote to memory of 3608	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe	cmd.exe
PID 5016 wrote to memory of 3608	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe	cmd.exe
PID 5016 wrote to memory of 3608	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe	cmd.exe
PID 4528 wrote to memory of 4296	4528	cmd.exe	attrib.exe
PID 4528 wrote to memory of 4296	4528	cmd.exe	attrib.exe
PID 4528 wrote to memory of 4296	4528	cmd.exe	attrib.exe
PID 3608 wrote to memory of 5020	3608	cmd.exe	attrib.exe
PID 3608 wrote to memory of 5020	3608	cmd.exe	attrib.exe
PID 3608 wrote to memory of 5020	3608	cmd.exe	attrib.exe
PID 5016 wrote to memory of 1280	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe	msdcsc.exe
PID 5016 wrote to memory of 1280	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe	msdcsc.exe
PID 5016 wrote to memory of 1280	5016	ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe	msdcsc.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe
PID 1280 wrote to memory of 1000	1280	msdcsc.exe	notepad.exe

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

Processes:

msdcsc.exe

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

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

4296 attrib.exe
5020 attrib.exe

pid	process
4296	attrib.exe
5020	attrib.exe

C:\Users\Admin\AppData\Local\Temp\ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe
"C:\Users\Admin\AppData\Local\Temp\ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.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:5016

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:4528

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\ca582eb808454d1cde38c8b2f774edb3c73241b37e95ad369afaea95ca83e7fa.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:4296

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:3608

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:5020

C:\MSDCSC\msdcsc.exe
"C:\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:1280

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:1000

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