darkcomet | 7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0

Processes:

7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe

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"	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.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 1 IoCs

Processes:

msdcsc.exe

pid process

1764 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

2248 attrib.exe
2572 attrib.exe

pid	process
1764	msdcsc.exe

pid	process
2248	attrib.exe
2572	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:

7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\Control Panel\International\Geo\Nation	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.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 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

Processes:

7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.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:

7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

1764 msdcsc.exe

pid	process
1764	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: SeSecurityPrivilege	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: SeTakeOwnershipPrivilege	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: SeLoadDriverPrivilege	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: SeSystemProfilePrivilege	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: SeSystemtimePrivilege	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: SeProfSingleProcessPrivilege	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: SeIncBasePriorityPrivilege	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: SeCreatePagefilePrivilege	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: SeBackupPrivilege	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: SeRestorePrivilege	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: SeShutdownPrivilege	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: SeDebugPrivilege	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: SeSystemEnvironmentPrivilege	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: SeChangeNotifyPrivilege	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: SeRemoteShutdownPrivilege	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: SeUndockPrivilege	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: SeManageVolumePrivilege	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: SeImpersonatePrivilege	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: SeCreateGlobalPrivilege	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: 33	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: 34	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: 35	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: 36	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
Token: SeIncreaseQuotaPrivilege	1764	msdcsc.exe
Token: SeSecurityPrivilege	1764	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1764	msdcsc.exe
Token: SeLoadDriverPrivilege	1764	msdcsc.exe
Token: SeSystemProfilePrivilege	1764	msdcsc.exe
Token: SeSystemtimePrivilege	1764	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1764	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1764	msdcsc.exe
Token: SeCreatePagefilePrivilege	1764	msdcsc.exe
Token: SeBackupPrivilege	1764	msdcsc.exe
Token: SeRestorePrivilege	1764	msdcsc.exe
Token: SeShutdownPrivilege	1764	msdcsc.exe
Token: SeDebugPrivilege	1764	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1764	msdcsc.exe
Token: SeChangeNotifyPrivilege	1764	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1764	msdcsc.exe
Token: SeUndockPrivilege	1764	msdcsc.exe
Token: SeManageVolumePrivilege	1764	msdcsc.exe
Token: SeImpersonatePrivilege	1764	msdcsc.exe
Token: SeCreateGlobalPrivilege	1764	msdcsc.exe
Token: 33	1764	msdcsc.exe
Token: 34	1764	msdcsc.exe
Token: 35	1764	msdcsc.exe
Token: 36	1764	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1764 msdcsc.exe

pid	process
1764	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 3792 wrote to memory of 3832	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe	cmd.exe
PID 3792 wrote to memory of 3832	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe	cmd.exe
PID 3792 wrote to memory of 3832	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe	cmd.exe
PID 3792 wrote to memory of 1176	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe	cmd.exe
PID 3792 wrote to memory of 1176	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe	cmd.exe
PID 3792 wrote to memory of 1176	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe	cmd.exe
PID 3832 wrote to memory of 2248	3832	cmd.exe	attrib.exe
PID 3832 wrote to memory of 2248	3832	cmd.exe	attrib.exe
PID 3832 wrote to memory of 2248	3832	cmd.exe	attrib.exe
PID 1176 wrote to memory of 2572	1176	cmd.exe	attrib.exe
PID 1176 wrote to memory of 2572	1176	cmd.exe	attrib.exe
PID 1176 wrote to memory of 2572	1176	cmd.exe	attrib.exe
PID 3792 wrote to memory of 1764	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe	msdcsc.exe
PID 3792 wrote to memory of 1764	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe	msdcsc.exe
PID 3792 wrote to memory of 1764	3792	7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe	msdcsc.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	msdcsc.exe	notepad.exe
PID 1764 wrote to memory of 3152	1764	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 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

2248 attrib.exe
2572 attrib.exe

pid	process
2248	attrib.exe
2572	attrib.exe

C:\Users\Admin\AppData\Local\Temp\7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe
"C:\Users\Admin\AppData\Local\Temp\7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.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:3792

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:3832

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\7845e3ad0296d12893b2735d4030376213e1b68f335c679c5e150f6a021618e0.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2248

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:1176

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2572

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
"C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
2⤵
- Modifies security service
- Windows security bypass
- Executes dropped EXE
- Windows security modification
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1764

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:3152

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