darkcomet | afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af

Processes:

afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\MSDCSC\\msdcsc.exe"	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe

Modifies security service 2 TTPs 2 IoCs

evasion

Modify Registry

Modify Existing Service

T1031

Processes:

msdcsc.exeiexplore.exe

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

Windows security bypass 2 TTPs 4 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

Processes:

msdcsc.exeiexplore.exe

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

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

4424 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

2392 attrib.exe
2344 attrib.exe

pid	process
4424	msdcsc.exe

pid	process
2392	attrib.exe
2344	attrib.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/4156-130-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
C:\Windows\MSDCSC\msdcsc.exe	upx
C:\Windows\MSDCSC\msdcsc.exe	upx
behavioral2/memory/4156-138-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/4424-139-0x0000000000400000-0x00000000004BA000-memory.dmp	upx

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:

afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Control Panel\International\Geo\Nation	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.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:

afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\MSDCSC\\msdcsc.exe"	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

msdcsc.exe

description pid process target process

PID 4424 set thread context of 3084 4424 msdcsc.exe iexplore.exe

description	pid	process	target process
PID 4424 set thread context of 3084	4424	msdcsc.exe	iexplore.exe

Drops file in Windows directory 3 IoCs

Processes:

afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe

description	ioc	process
File opened for modification	C:\Windows\MSDCSC\msdcsc.exe	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
File opened for modification	C:\Windows\MSDCSC\	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
File created	C:\Windows\MSDCSC\msdcsc.exe	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.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:

afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

iexplore.exe

pid process

3084 iexplore.exe

pid	process
3084	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exemsdcsc.exeiexplore.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: SeSecurityPrivilege	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: SeTakeOwnershipPrivilege	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: SeLoadDriverPrivilege	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: SeSystemProfilePrivilege	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: SeSystemtimePrivilege	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: SeProfSingleProcessPrivilege	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: SeIncBasePriorityPrivilege	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: SeCreatePagefilePrivilege	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: SeBackupPrivilege	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: SeRestorePrivilege	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: SeShutdownPrivilege	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: SeDebugPrivilege	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: SeSystemEnvironmentPrivilege	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: SeChangeNotifyPrivilege	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: SeRemoteShutdownPrivilege	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: SeUndockPrivilege	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: SeManageVolumePrivilege	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: SeImpersonatePrivilege	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: SeCreateGlobalPrivilege	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: 33	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: 34	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: 35	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: 36	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
Token: SeIncreaseQuotaPrivilege	4424	msdcsc.exe
Token: SeSecurityPrivilege	4424	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4424	msdcsc.exe
Token: SeLoadDriverPrivilege	4424	msdcsc.exe
Token: SeSystemProfilePrivilege	4424	msdcsc.exe
Token: SeSystemtimePrivilege	4424	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4424	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4424	msdcsc.exe
Token: SeCreatePagefilePrivilege	4424	msdcsc.exe
Token: SeBackupPrivilege	4424	msdcsc.exe
Token: SeRestorePrivilege	4424	msdcsc.exe
Token: SeShutdownPrivilege	4424	msdcsc.exe
Token: SeDebugPrivilege	4424	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4424	msdcsc.exe
Token: SeChangeNotifyPrivilege	4424	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4424	msdcsc.exe
Token: SeUndockPrivilege	4424	msdcsc.exe
Token: SeManageVolumePrivilege	4424	msdcsc.exe
Token: SeImpersonatePrivilege	4424	msdcsc.exe
Token: SeCreateGlobalPrivilege	4424	msdcsc.exe
Token: 33	4424	msdcsc.exe
Token: 34	4424	msdcsc.exe
Token: 35	4424	msdcsc.exe
Token: 36	4424	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	3084	iexplore.exe
Token: SeSecurityPrivilege	3084	iexplore.exe
Token: SeTakeOwnershipPrivilege	3084	iexplore.exe
Token: SeLoadDriverPrivilege	3084	iexplore.exe
Token: SeSystemProfilePrivilege	3084	iexplore.exe
Token: SeSystemtimePrivilege	3084	iexplore.exe
Token: SeProfSingleProcessPrivilege	3084	iexplore.exe
Token: SeIncBasePriorityPrivilege	3084	iexplore.exe
Token: SeCreatePagefilePrivilege	3084	iexplore.exe
Token: SeBackupPrivilege	3084	iexplore.exe
Token: SeRestorePrivilege	3084	iexplore.exe
Token: SeShutdownPrivilege	3084	iexplore.exe
Token: SeDebugPrivilege	3084	iexplore.exe
Token: SeSystemEnvironmentPrivilege	3084	iexplore.exe
Token: SeChangeNotifyPrivilege	3084	iexplore.exe
Token: SeRemoteShutdownPrivilege	3084	iexplore.exe

Suspicious use of WriteProcessMemory 42 IoCs

Processes:

afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.execmd.execmd.exemsdcsc.exeiexplore.exe

description	pid	process	target process
PID 4156 wrote to memory of 4460	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe	cmd.exe
PID 4156 wrote to memory of 4460	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe	cmd.exe
PID 4156 wrote to memory of 4460	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe	cmd.exe
PID 4156 wrote to memory of 4288	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe	cmd.exe
PID 4156 wrote to memory of 4288	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe	cmd.exe
PID 4156 wrote to memory of 4288	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe	cmd.exe
PID 4460 wrote to memory of 2344	4460	cmd.exe	attrib.exe
PID 4460 wrote to memory of 2344	4460	cmd.exe	attrib.exe
PID 4460 wrote to memory of 2344	4460	cmd.exe	attrib.exe
PID 4288 wrote to memory of 2392	4288	cmd.exe	attrib.exe
PID 4288 wrote to memory of 2392	4288	cmd.exe	attrib.exe
PID 4288 wrote to memory of 2392	4288	cmd.exe	attrib.exe
PID 4156 wrote to memory of 4424	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe	msdcsc.exe
PID 4156 wrote to memory of 4424	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe	msdcsc.exe
PID 4156 wrote to memory of 4424	4156	afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe	msdcsc.exe
PID 4424 wrote to memory of 3084	4424	msdcsc.exe	iexplore.exe
PID 4424 wrote to memory of 3084	4424	msdcsc.exe	iexplore.exe
PID 4424 wrote to memory of 3084	4424	msdcsc.exe	iexplore.exe
PID 4424 wrote to memory of 3084	4424	msdcsc.exe	iexplore.exe
PID 4424 wrote to memory of 3084	4424	msdcsc.exe	iexplore.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.exe	notepad.exe
PID 3084 wrote to memory of 3304	3084	iexplore.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

2392 attrib.exe
2344 attrib.exe

pid	process
2392	attrib.exe
2344	attrib.exe

C:\Users\Admin\AppData\Local\Temp\afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe
"C:\Users\Admin\AppData\Local\Temp\afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4156

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:4460

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\afb6012b92eaea693ffbb6ad9000d729fabadd44dab0da7d9b1386d4cfacf7af.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2344

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:4288

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2392

C:\Windows\MSDCSC\msdcsc.exe
"C:\Windows\MSDCSC\msdcsc.exe"
2⤵
- Modifies security service
- Windows security bypass
- Executes dropped EXE
- Windows security modification
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4424

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
- Modifies security service
- Windows security bypass
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3084

C:\Windows\SysWOW64\notepad.exe
notepad
4⤵
PID:3304

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