darkcomet | 39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd

Processes:

39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.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"	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.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

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

msdcsc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1952 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

1396 attrib.exe
5036 attrib.exe

pid	process
1952	msdcsc.exe

pid	process
1396	attrib.exe
5036	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:

39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.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:

39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.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:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Drops file in System32 directory 3 IoCs

Processes:

39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.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:

39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

1952 msdcsc.exe

pid	process
1952	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: SeSecurityPrivilege	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: SeTakeOwnershipPrivilege	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: SeLoadDriverPrivilege	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: SeSystemProfilePrivilege	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: SeSystemtimePrivilege	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: SeProfSingleProcessPrivilege	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: SeIncBasePriorityPrivilege	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: SeCreatePagefilePrivilege	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: SeBackupPrivilege	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: SeRestorePrivilege	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: SeShutdownPrivilege	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: SeDebugPrivilege	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: SeSystemEnvironmentPrivilege	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: SeChangeNotifyPrivilege	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: SeRemoteShutdownPrivilege	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: SeUndockPrivilege	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: SeManageVolumePrivilege	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: SeImpersonatePrivilege	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: SeCreateGlobalPrivilege	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: 33	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: 34	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: 35	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: 36	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
Token: SeIncreaseQuotaPrivilege	1952	msdcsc.exe
Token: SeSecurityPrivilege	1952	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1952	msdcsc.exe
Token: SeLoadDriverPrivilege	1952	msdcsc.exe
Token: SeSystemProfilePrivilege	1952	msdcsc.exe
Token: SeSystemtimePrivilege	1952	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1952	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1952	msdcsc.exe
Token: SeCreatePagefilePrivilege	1952	msdcsc.exe
Token: SeBackupPrivilege	1952	msdcsc.exe
Token: SeRestorePrivilege	1952	msdcsc.exe
Token: SeShutdownPrivilege	1952	msdcsc.exe
Token: SeDebugPrivilege	1952	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1952	msdcsc.exe
Token: SeChangeNotifyPrivilege	1952	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1952	msdcsc.exe
Token: SeUndockPrivilege	1952	msdcsc.exe
Token: SeManageVolumePrivilege	1952	msdcsc.exe
Token: SeImpersonatePrivilege	1952	msdcsc.exe
Token: SeCreateGlobalPrivilege	1952	msdcsc.exe
Token: 33	1952	msdcsc.exe
Token: 34	1952	msdcsc.exe
Token: 35	1952	msdcsc.exe
Token: 36	1952	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1952 msdcsc.exe

pid	process
1952	msdcsc.exe

Suspicious use of WriteProcessMemory 54 IoCs

Processes:

39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 4836 wrote to memory of 1920	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	cmd.exe
PID 4836 wrote to memory of 1920	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	cmd.exe
PID 4836 wrote to memory of 1920	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	cmd.exe
PID 4836 wrote to memory of 1164	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	cmd.exe
PID 4836 wrote to memory of 1164	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	cmd.exe
PID 4836 wrote to memory of 1164	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	cmd.exe
PID 4836 wrote to memory of 2788	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	notepad.exe
PID 4836 wrote to memory of 2788	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	notepad.exe
PID 4836 wrote to memory of 2788	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	notepad.exe
PID 4836 wrote to memory of 2788	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	notepad.exe
PID 4836 wrote to memory of 2788	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	notepad.exe
PID 4836 wrote to memory of 2788	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	notepad.exe
PID 4836 wrote to memory of 2788	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	notepad.exe
PID 4836 wrote to memory of 2788	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	notepad.exe
PID 4836 wrote to memory of 2788	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	notepad.exe
PID 4836 wrote to memory of 2788	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	notepad.exe
PID 4836 wrote to memory of 2788	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	notepad.exe
PID 4836 wrote to memory of 2788	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	notepad.exe
PID 4836 wrote to memory of 2788	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	notepad.exe
PID 4836 wrote to memory of 2788	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	notepad.exe
PID 4836 wrote to memory of 2788	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	notepad.exe
PID 4836 wrote to memory of 2788	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	notepad.exe
PID 4836 wrote to memory of 2788	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	notepad.exe
PID 1920 wrote to memory of 5036	1920	cmd.exe	attrib.exe
PID 1920 wrote to memory of 5036	1920	cmd.exe	attrib.exe
PID 1920 wrote to memory of 5036	1920	cmd.exe	attrib.exe
PID 1164 wrote to memory of 1396	1164	cmd.exe	attrib.exe
PID 1164 wrote to memory of 1396	1164	cmd.exe	attrib.exe
PID 1164 wrote to memory of 1396	1164	cmd.exe	attrib.exe
PID 4836 wrote to memory of 1952	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	msdcsc.exe
PID 4836 wrote to memory of 1952	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	msdcsc.exe
PID 4836 wrote to memory of 1952	4836	39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe	msdcsc.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe
PID 1952 wrote to memory of 2080	1952	msdcsc.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

5036 attrib.exe
1396 attrib.exe

pid	process
5036	attrib.exe
1396	attrib.exe

C:\Users\Admin\AppData\Local\Temp\39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe
"C:\Users\Admin\AppData\Local\Temp\39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4836

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:1920

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\39116035169ea9c544db5746e7c39729d4072bfe4d792afe02a726fac321ffbd.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:5036

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:1164

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:1396

C:\Windows\SysWOW64\notepad.exe
notepad
2⤵
PID:2788

C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
"C:\Windows\system32\MSDCSC\msdcsc.exe"
2⤵
- 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:1952

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:2080

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

5

Disabling Security Tools

T1089

Hidden Files and Directories

T1158

Credential Access

Discovery

Query Registry

T1012

System Information Discovery