darkcomet | cbda73ebcf4af6763dded20544a0658366740bbaf9791baf177391514498072b

Processes:

AzoteClient.exe

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

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

Windows Service

T1543.003

Processes:

msdcsc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	msdcsc.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

Disables RegEdit via registry modification 1 IoCs

evasion

Processes:

msdcsc.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Disables Task Manager via registry modification
evasion
Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exeattrib.exe

pid process

2636 attrib.exe
2652 attrib.exe
Deletes itself 1 IoCs

Processes:

notepad.exe

pid process

3020 notepad.exe
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

2444 msdcsc.exe
Loads dropped DLL 2 IoCs

Processes:

AzoteClient.exe

pid process

2212 AzoteClient.exe
2212 AzoteClient.exe

pid	process
2636	attrib.exe
2652	attrib.exe

pid	process
3020	notepad.exe

pid	process
2444	msdcsc.exe

pid	process
2212	AzoteClient.exe
2212	AzoteClient.exe

UPX packed file 7 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2212-0-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
behavioral1/memory/2444-39-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral1/memory/2212-74-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral1/memory/2444-76-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral1/memory/2444-79-0x0000000000400000-0x00000000004E8000-memory.dmp	upx
behavioral1/memory/2444-81-0x0000000000400000-0x00000000004E8000-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:

AzoteClient.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	AzoteClient.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe

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

System Information Discovery
T1082
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

2444 msdcsc.exe

pid	process
2444	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

AzoteClient.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2212	AzoteClient.exe
Token: SeSecurityPrivilege	2212	AzoteClient.exe
Token: SeTakeOwnershipPrivilege	2212	AzoteClient.exe
Token: SeLoadDriverPrivilege	2212	AzoteClient.exe
Token: SeSystemProfilePrivilege	2212	AzoteClient.exe
Token: SeSystemtimePrivilege	2212	AzoteClient.exe
Token: SeProfSingleProcessPrivilege	2212	AzoteClient.exe
Token: SeIncBasePriorityPrivilege	2212	AzoteClient.exe
Token: SeCreatePagefilePrivilege	2212	AzoteClient.exe
Token: SeBackupPrivilege	2212	AzoteClient.exe
Token: SeRestorePrivilege	2212	AzoteClient.exe
Token: SeShutdownPrivilege	2212	AzoteClient.exe
Token: SeDebugPrivilege	2212	AzoteClient.exe
Token: SeSystemEnvironmentPrivilege	2212	AzoteClient.exe
Token: SeChangeNotifyPrivilege	2212	AzoteClient.exe
Token: SeRemoteShutdownPrivilege	2212	AzoteClient.exe
Token: SeUndockPrivilege	2212	AzoteClient.exe
Token: SeManageVolumePrivilege	2212	AzoteClient.exe
Token: SeImpersonatePrivilege	2212	AzoteClient.exe
Token: SeCreateGlobalPrivilege	2212	AzoteClient.exe
Token: 33	2212	AzoteClient.exe
Token: 34	2212	AzoteClient.exe
Token: 35	2212	AzoteClient.exe
Token: SeIncreaseQuotaPrivilege	2444	msdcsc.exe
Token: SeSecurityPrivilege	2444	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2444	msdcsc.exe
Token: SeLoadDriverPrivilege	2444	msdcsc.exe
Token: SeSystemProfilePrivilege	2444	msdcsc.exe
Token: SeSystemtimePrivilege	2444	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2444	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2444	msdcsc.exe
Token: SeCreatePagefilePrivilege	2444	msdcsc.exe
Token: SeBackupPrivilege	2444	msdcsc.exe
Token: SeRestorePrivilege	2444	msdcsc.exe
Token: SeShutdownPrivilege	2444	msdcsc.exe
Token: SeDebugPrivilege	2444	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2444	msdcsc.exe
Token: SeChangeNotifyPrivilege	2444	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2444	msdcsc.exe
Token: SeUndockPrivilege	2444	msdcsc.exe
Token: SeManageVolumePrivilege	2444	msdcsc.exe
Token: SeImpersonatePrivilege	2444	msdcsc.exe
Token: SeCreateGlobalPrivilege	2444	msdcsc.exe
Token: 33	2444	msdcsc.exe
Token: 34	2444	msdcsc.exe
Token: 35	2444	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

2444 msdcsc.exe

pid	process
2444	msdcsc.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

AzoteClient.execmd.execmd.exemsdcsc.exe

description	pid	process	target process
PID 2212 wrote to memory of 2740	2212	AzoteClient.exe	cmd.exe
PID 2212 wrote to memory of 2740	2212	AzoteClient.exe	cmd.exe
PID 2212 wrote to memory of 2740	2212	AzoteClient.exe	cmd.exe
PID 2212 wrote to memory of 2740	2212	AzoteClient.exe	cmd.exe
PID 2212 wrote to memory of 2308	2212	AzoteClient.exe	cmd.exe
PID 2212 wrote to memory of 2308	2212	AzoteClient.exe	cmd.exe
PID 2212 wrote to memory of 2308	2212	AzoteClient.exe	cmd.exe
PID 2212 wrote to memory of 2308	2212	AzoteClient.exe	cmd.exe
PID 2212 wrote to memory of 3020	2212	AzoteClient.exe	notepad.exe
PID 2212 wrote to memory of 3020	2212	AzoteClient.exe	notepad.exe
PID 2212 wrote to memory of 3020	2212	AzoteClient.exe	notepad.exe
PID 2212 wrote to memory of 3020	2212	AzoteClient.exe	notepad.exe
PID 2212 wrote to memory of 3020	2212	AzoteClient.exe	notepad.exe
PID 2308 wrote to memory of 2652	2308	cmd.exe	attrib.exe
PID 2308 wrote to memory of 2652	2308	cmd.exe	attrib.exe
PID 2308 wrote to memory of 2652	2308	cmd.exe	attrib.exe
PID 2308 wrote to memory of 2652	2308	cmd.exe	attrib.exe
PID 2740 wrote to memory of 2636	2740	cmd.exe	attrib.exe
PID 2740 wrote to memory of 2636	2740	cmd.exe	attrib.exe
PID 2740 wrote to memory of 2636	2740	cmd.exe	attrib.exe
PID 2740 wrote to memory of 2636	2740	cmd.exe	attrib.exe
PID 2212 wrote to memory of 3020	2212	AzoteClient.exe	notepad.exe
PID 2212 wrote to memory of 3020	2212	AzoteClient.exe	notepad.exe
PID 2212 wrote to memory of 3020	2212	AzoteClient.exe	notepad.exe
PID 2212 wrote to memory of 3020	2212	AzoteClient.exe	notepad.exe
PID 2212 wrote to memory of 3020	2212	AzoteClient.exe	notepad.exe
PID 2212 wrote to memory of 3020	2212	AzoteClient.exe	notepad.exe
PID 2212 wrote to memory of 3020	2212	AzoteClient.exe	notepad.exe
PID 2212 wrote to memory of 3020	2212	AzoteClient.exe	notepad.exe
PID 2212 wrote to memory of 3020	2212	AzoteClient.exe	notepad.exe
PID 2212 wrote to memory of 3020	2212	AzoteClient.exe	notepad.exe
PID 2212 wrote to memory of 3020	2212	AzoteClient.exe	notepad.exe
PID 2212 wrote to memory of 3020	2212	AzoteClient.exe	notepad.exe
PID 2212 wrote to memory of 3020	2212	AzoteClient.exe	notepad.exe
PID 2212 wrote to memory of 2444	2212	AzoteClient.exe	msdcsc.exe
PID 2212 wrote to memory of 2444	2212	AzoteClient.exe	msdcsc.exe
PID 2212 wrote to memory of 2444	2212	AzoteClient.exe	msdcsc.exe
PID 2212 wrote to memory of 2444	2212	AzoteClient.exe	msdcsc.exe
PID 2444 wrote to memory of 2092	2444	msdcsc.exe	iexplore.exe
PID 2444 wrote to memory of 2092	2444	msdcsc.exe	iexplore.exe
PID 2444 wrote to memory of 2092	2444	msdcsc.exe	iexplore.exe
PID 2444 wrote to memory of 2092	2444	msdcsc.exe	iexplore.exe
PID 2444 wrote to memory of 1708	2444	msdcsc.exe	explorer.exe
PID 2444 wrote to memory of 1708	2444	msdcsc.exe	explorer.exe
PID 2444 wrote to memory of 1708	2444	msdcsc.exe	explorer.exe
PID 2444 wrote to memory of 1708	2444	msdcsc.exe	explorer.exe
PID 2444 wrote to memory of 2912	2444	msdcsc.exe	notepad.exe
PID 2444 wrote to memory of 2912	2444	msdcsc.exe	notepad.exe
PID 2444 wrote to memory of 2912	2444	msdcsc.exe	notepad.exe
PID 2444 wrote to memory of 2912	2444	msdcsc.exe	notepad.exe
PID 2444 wrote to memory of 2912	2444	msdcsc.exe	notepad.exe
PID 2444 wrote to memory of 2912	2444	msdcsc.exe	notepad.exe
PID 2444 wrote to memory of 2912	2444	msdcsc.exe	notepad.exe
PID 2444 wrote to memory of 2912	2444	msdcsc.exe	notepad.exe
PID 2444 wrote to memory of 2912	2444	msdcsc.exe	notepad.exe
PID 2444 wrote to memory of 2912	2444	msdcsc.exe	notepad.exe
PID 2444 wrote to memory of 2912	2444	msdcsc.exe	notepad.exe
PID 2444 wrote to memory of 2912	2444	msdcsc.exe	notepad.exe
PID 2444 wrote to memory of 2912	2444	msdcsc.exe	notepad.exe
PID 2444 wrote to memory of 2912	2444	msdcsc.exe	notepad.exe
PID 2444 wrote to memory of 2912	2444	msdcsc.exe	notepad.exe
PID 2444 wrote to memory of 2912	2444	msdcsc.exe	notepad.exe
PID 2444 wrote to memory of 2912	2444	msdcsc.exe	notepad.exe
PID 2444 wrote to memory of 2912	2444	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
T1564.001

Processes:

attrib.exeattrib.exe

pid process

2636 attrib.exe
2652 attrib.exe

pid	process
2636	attrib.exe
2652	attrib.exe

C:\Users\Admin\AppData\Local\Temp\AzoteClient.exe
"C:\Users\Admin\AppData\Local\Temp\AzoteClient.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2212

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\AzoteClient.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:2740

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\AzoteClient.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2636

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:2308

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2652

C:\Windows\SysWOW64\notepad.exe
notepad
2⤵
- Deletes itself
PID:3020

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Modifies firewall policy service
- 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
- System policy modification
PID:2444

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
PID:2092

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
3⤵
PID:1708

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:2912

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

7

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Discovery

System Information Discovery