darkcomet | 6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349

General

Target

6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Size

791KB
MD5

32472c66a6a689be7e6903f1f360cec6
SHA1

29dfb3a5e493ae6cdf90bcf856ac9c497c4889ea
SHA256

6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349
SHA512

aad8455001ed3d53d6e05fec658cdb179798e5427143442fb41a5a7f1fd6ff402270773934478a5211bd2fe19292b96f7d91db723361a6d081602756305ebe9a
SSDEEP

12288:A9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hurfMb/:kZ1xuVVjfFoynPaVBUR8f+kN10EBwgb/

Score

10^/10

darkcomet guest22 evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest22

C2

leunam.ddns.net:1604

Mutex

DC_MUTEX-CYTRPNC

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
NlD3lKCPlj6p
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

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:

6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.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"	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

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

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

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

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

4956 msdcsc.exe

pid	process
4956	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:

6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.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 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\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). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeSecurityPrivilege	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeTakeOwnershipPrivilege	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeLoadDriverPrivilege	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeSystemProfilePrivilege	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeSystemtimePrivilege	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeProfSingleProcessPrivilege	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeIncBasePriorityPrivilege	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeCreatePagefilePrivilege	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeBackupPrivilege	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeRestorePrivilege	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeShutdownPrivilege	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeDebugPrivilege	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeSystemEnvironmentPrivilege	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeChangeNotifyPrivilege	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeRemoteShutdownPrivilege	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeUndockPrivilege	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeManageVolumePrivilege	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeImpersonatePrivilege	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeCreateGlobalPrivilege	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: 33	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: 34	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: 35	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: 36	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeIncreaseQuotaPrivilege	4956	msdcsc.exe
Token: SeSecurityPrivilege	4956	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4956	msdcsc.exe
Token: SeLoadDriverPrivilege	4956	msdcsc.exe
Token: SeSystemProfilePrivilege	4956	msdcsc.exe
Token: SeSystemtimePrivilege	4956	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4956	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4956	msdcsc.exe
Token: SeCreatePagefilePrivilege	4956	msdcsc.exe
Token: SeBackupPrivilege	4956	msdcsc.exe
Token: SeRestorePrivilege	4956	msdcsc.exe
Token: SeShutdownPrivilege	4956	msdcsc.exe
Token: SeDebugPrivilege	4956	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4956	msdcsc.exe
Token: SeChangeNotifyPrivilege	4956	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4956	msdcsc.exe
Token: SeUndockPrivilege	4956	msdcsc.exe
Token: SeManageVolumePrivilege	4956	msdcsc.exe
Token: SeImpersonatePrivilege	4956	msdcsc.exe
Token: SeCreateGlobalPrivilege	4956	msdcsc.exe
Token: 33	4956	msdcsc.exe
Token: 34	4956	msdcsc.exe
Token: 35	4956	msdcsc.exe
Token: 36	4956	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

4956 msdcsc.exe

pid	process
4956	msdcsc.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exemsdcsc.exe

description	pid	process	target process
PID 752 wrote to memory of 4956	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe	msdcsc.exe
PID 752 wrote to memory of 4956	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe	msdcsc.exe
PID 752 wrote to memory of 4956	752	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe	msdcsc.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe
PID 4956 wrote to memory of 4748	4956	msdcsc.exe	notepad.exe

C:\Users\Admin\AppData\Local\Temp\6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
"C:\Users\Admin\AppData\Local\Temp\6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.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:752

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
- 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:4956

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:4748

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

2

T1031

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Disabling Security Tools

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
791KB

MD5
32472c66a6a689be7e6903f1f360cec6

SHA1
29dfb3a5e493ae6cdf90bcf856ac9c497c4889ea

SHA256
6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349

SHA512
aad8455001ed3d53d6e05fec658cdb179798e5427143442fb41a5a7f1fd6ff402270773934478a5211bd2fe19292b96f7d91db723361a6d081602756305ebe9a

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

Filesize
791KB

MD5
32472c66a6a689be7e6903f1f360cec6

SHA1
29dfb3a5e493ae6cdf90bcf856ac9c497c4889ea

SHA256
6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349

SHA512
aad8455001ed3d53d6e05fec658cdb179798e5427143442fb41a5a7f1fd6ff402270773934478a5211bd2fe19292b96f7d91db723361a6d081602756305ebe9a

Download Submit
memory/4748-135-0x0000000000000000-mapping.dmp

Download
memory/4956-132-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads