darkcomet | f5d411a692ba80fd2cb08a8620376e3bcd8e87772dafd04b5381ee14f928e592

Processes:

0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.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\\Roaming\\MSDCSC\\msdcsc.exe"	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe

Modifies security service 2 TTPs 1 IoCs
evasion

Modify Registry
T1112

Windows Service
T1543.003

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

Disable or Modify Tools

T1562.001

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

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:

0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\Control Panel\International\Geo\Nation	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

5104 msdcsc.exe

pid	process
5104	msdcsc.exe

UPX packed file 16 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/3388-0-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe	upx
behavioral2/memory/5104-64-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/3388-63-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/5104-67-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/5104-68-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/5104-70-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/5104-71-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/5104-72-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/5104-73-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/5104-74-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/5104-75-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/5104-76-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/5104-77-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/5104-78-0x0000000000400000-0x00000000004BA000-memory.dmp	upx
behavioral2/memory/5104-79-0x0000000000400000-0x00000000004BA000-memory.dmp	upx

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

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

T1547.001

Modify Registry

Processes:

0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\MSDCSC\\msdcsc.exe"	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\MSDCSC\\msdcsc.exe"	msdcsc.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: SeSecurityPrivilege	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: SeSystemtimePrivilege	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: SeBackupPrivilege	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: SeRestorePrivilege	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: SeShutdownPrivilege	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: SeDebugPrivilege	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: SeUndockPrivilege	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: SeManageVolumePrivilege	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: SeImpersonatePrivilege	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: 33	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: 34	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: 35	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: 36	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	5104	msdcsc.exe
Token: SeSecurityPrivilege	5104	msdcsc.exe
Token: SeTakeOwnershipPrivilege	5104	msdcsc.exe
Token: SeLoadDriverPrivilege	5104	msdcsc.exe
Token: SeSystemProfilePrivilege	5104	msdcsc.exe
Token: SeSystemtimePrivilege	5104	msdcsc.exe
Token: SeProfSingleProcessPrivilege	5104	msdcsc.exe
Token: SeIncBasePriorityPrivilege	5104	msdcsc.exe
Token: SeCreatePagefilePrivilege	5104	msdcsc.exe
Token: SeBackupPrivilege	5104	msdcsc.exe
Token: SeRestorePrivilege	5104	msdcsc.exe
Token: SeShutdownPrivilege	5104	msdcsc.exe
Token: SeDebugPrivilege	5104	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	5104	msdcsc.exe
Token: SeChangeNotifyPrivilege	5104	msdcsc.exe
Token: SeRemoteShutdownPrivilege	5104	msdcsc.exe
Token: SeUndockPrivilege	5104	msdcsc.exe
Token: SeManageVolumePrivilege	5104	msdcsc.exe
Token: SeImpersonatePrivilege	5104	msdcsc.exe
Token: SeCreateGlobalPrivilege	5104	msdcsc.exe
Token: 33	5104	msdcsc.exe
Token: 34	5104	msdcsc.exe
Token: 35	5104	msdcsc.exe
Token: 36	5104	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

5104 msdcsc.exe

pid	process
5104	msdcsc.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exemsdcsc.exe

description	pid	process	target process
PID 3388 wrote to memory of 5104	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe	msdcsc.exe
PID 3388 wrote to memory of 5104	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe	msdcsc.exe
PID 3388 wrote to memory of 5104	3388	0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe	msdcsc.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe
PID 5104 wrote to memory of 1616	5104	msdcsc.exe	notepad.exe

C:\Users\Admin\AppData\Local\Temp\0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\0e9129876661c4123a3fd7fcf76467c0_JaffaCakes118.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:3388

C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe
"C:\Users\Admin\AppData\Roaming\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
PID:5104

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:1616

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4472,i,7869973516895866428,11647313872437892197,262144 --variations-seed-version --mojo-platform-channel-handle=4220 /prefetch:8
1⤵
PID:3232

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Modify Registry

5

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Credential Access

Discovery

Query Registry

T1012

System Information Discovery