darkcomet | 4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1

General

Target

4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Size

251KB
MD5

44fa6d3ed60372a6e2fc42a8d37d1a0f
SHA1

b37f23945917b4a32e20f8e0760a002164f39e85
SHA256

4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1
SHA512

1bfde61583860f33e2375cfcd0e9fcfa334520db541e47281f8d5e188ea5a0c978f4153b5bcc1a5304a7a187910d2c0dba777bd724b39ccb2bdf862f2843f63b

Score

10^/10

darkcomet evasion persistence rat trojan upx

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.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"	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.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
Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

2864 msdcsc.exe

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

pid	process
2864	msdcsc.exe

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	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:

4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Control Panel\International\Geo\Nation	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

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

T1112

Processes:

4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.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:

4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeSecurityPrivilege	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeTakeOwnershipPrivilege	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeLoadDriverPrivilege	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeSystemProfilePrivilege	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeSystemtimePrivilege	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeProfSingleProcessPrivilege	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeIncBasePriorityPrivilege	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeCreatePagefilePrivilege	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeBackupPrivilege	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeRestorePrivilege	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeShutdownPrivilege	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeDebugPrivilege	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeSystemEnvironmentPrivilege	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeChangeNotifyPrivilege	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeRemoteShutdownPrivilege	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeUndockPrivilege	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeManageVolumePrivilege	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeImpersonatePrivilege	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeCreateGlobalPrivilege	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: 33	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: 34	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: 35	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: 36	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
Token: SeIncreaseQuotaPrivilege	2864	msdcsc.exe
Token: SeSecurityPrivilege	2864	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2864	msdcsc.exe
Token: SeLoadDriverPrivilege	2864	msdcsc.exe
Token: SeSystemProfilePrivilege	2864	msdcsc.exe
Token: SeSystemtimePrivilege	2864	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2864	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2864	msdcsc.exe
Token: SeCreatePagefilePrivilege	2864	msdcsc.exe
Token: SeBackupPrivilege	2864	msdcsc.exe
Token: SeRestorePrivilege	2864	msdcsc.exe
Token: SeShutdownPrivilege	2864	msdcsc.exe
Token: SeDebugPrivilege	2864	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2864	msdcsc.exe
Token: SeChangeNotifyPrivilege	2864	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2864	msdcsc.exe
Token: SeUndockPrivilege	2864	msdcsc.exe
Token: SeManageVolumePrivilege	2864	msdcsc.exe
Token: SeImpersonatePrivilege	2864	msdcsc.exe
Token: SeCreateGlobalPrivilege	2864	msdcsc.exe
Token: 33	2864	msdcsc.exe
Token: 34	2864	msdcsc.exe
Token: 35	2864	msdcsc.exe
Token: 36	2864	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

2864 msdcsc.exe

pid	process
2864	msdcsc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exemsdcsc.exe

description	pid	process	target process
PID 912 wrote to memory of 2864	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe	msdcsc.exe
PID 912 wrote to memory of 2864	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe	msdcsc.exe
PID 912 wrote to memory of 2864	912	4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe	msdcsc.exe
PID 2864 wrote to memory of 4052	2864	msdcsc.exe	iexplore.exe
PID 2864 wrote to memory of 4052	2864	msdcsc.exe	iexplore.exe
PID 2864 wrote to memory of 4052	2864	msdcsc.exe	iexplore.exe
PID 2864 wrote to memory of 3548	2864	msdcsc.exe	explorer.exe
PID 2864 wrote to memory of 3548	2864	msdcsc.exe	explorer.exe

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

Processes:

msdcsc.exe

description	ioc	process
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
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	msdcsc.exe

C:\Users\Admin\AppData\Local\Temp\4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.exe
"C:\Users\Admin\AppData\Local\Temp\4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1.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:912

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Modifies security service
- Executes dropped EXE
- Windows security modification
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2864

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
PID:4052

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
3⤵
PID:3548

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

6

T1112

Disabling Security Tools

2

T1089

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
44fa6d3ed60372a6e2fc42a8d37d1a0f

SHA1
b37f23945917b4a32e20f8e0760a002164f39e85

SHA256
4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1

SHA512
1bfde61583860f33e2375cfcd0e9fcfa334520db541e47281f8d5e188ea5a0c978f4153b5bcc1a5304a7a187910d2c0dba777bd724b39ccb2bdf862f2843f63b

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
44fa6d3ed60372a6e2fc42a8d37d1a0f

SHA1
b37f23945917b4a32e20f8e0760a002164f39e85

SHA256
4f66e8cd1ac8e685e39c3ed2b1b8cb99525fde8bd36921afe2456f9c9ea31fb1

SHA512
1bfde61583860f33e2375cfcd0e9fcfa334520db541e47281f8d5e188ea5a0c978f4153b5bcc1a5304a7a187910d2c0dba777bd724b39ccb2bdf862f2843f63b

Download Submit
memory/2864-0-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads