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

676 msdcsc.exe

pid	process
676	msdcsc.exe

Loads dropped DLL 2 IoCs

Processes:

6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe

pid	process
1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
1252	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-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\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

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeSecurityPrivilege	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeTakeOwnershipPrivilege	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeLoadDriverPrivilege	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeSystemProfilePrivilege	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeSystemtimePrivilege	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeProfSingleProcessPrivilege	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeIncBasePriorityPrivilege	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeCreatePagefilePrivilege	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeBackupPrivilege	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeRestorePrivilege	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeShutdownPrivilege	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeDebugPrivilege	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeSystemEnvironmentPrivilege	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeChangeNotifyPrivilege	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeRemoteShutdownPrivilege	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeUndockPrivilege	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeManageVolumePrivilege	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeImpersonatePrivilege	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeCreateGlobalPrivilege	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: 33	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: 34	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: 35	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe
Token: SeIncreaseQuotaPrivilege	676	msdcsc.exe
Token: SeSecurityPrivilege	676	msdcsc.exe
Token: SeTakeOwnershipPrivilege	676	msdcsc.exe
Token: SeLoadDriverPrivilege	676	msdcsc.exe
Token: SeSystemProfilePrivilege	676	msdcsc.exe
Token: SeSystemtimePrivilege	676	msdcsc.exe
Token: SeProfSingleProcessPrivilege	676	msdcsc.exe
Token: SeIncBasePriorityPrivilege	676	msdcsc.exe
Token: SeCreatePagefilePrivilege	676	msdcsc.exe
Token: SeBackupPrivilege	676	msdcsc.exe
Token: SeRestorePrivilege	676	msdcsc.exe
Token: SeShutdownPrivilege	676	msdcsc.exe
Token: SeDebugPrivilege	676	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	676	msdcsc.exe
Token: SeChangeNotifyPrivilege	676	msdcsc.exe
Token: SeRemoteShutdownPrivilege	676	msdcsc.exe
Token: SeUndockPrivilege	676	msdcsc.exe
Token: SeManageVolumePrivilege	676	msdcsc.exe
Token: SeImpersonatePrivilege	676	msdcsc.exe
Token: SeCreateGlobalPrivilege	676	msdcsc.exe
Token: 33	676	msdcsc.exe
Token: 34	676	msdcsc.exe
Token: 35	676	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

676 msdcsc.exe

pid	process
676	msdcsc.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exemsdcsc.exe

description	pid	process	target process
PID 1252 wrote to memory of 676	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe	msdcsc.exe
PID 1252 wrote to memory of 676	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe	msdcsc.exe
PID 1252 wrote to memory of 676	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe	msdcsc.exe
PID 1252 wrote to memory of 676	1252	6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349.exe	msdcsc.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	msdcsc.exe	notepad.exe
PID 676 wrote to memory of 596	676	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
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1252

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:676

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:596

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

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

Filesize
791KB

MD5
32472c66a6a689be7e6903f1f360cec6

SHA1
29dfb3a5e493ae6cdf90bcf856ac9c497c4889ea

SHA256
6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349

SHA512
aad8455001ed3d53d6e05fec658cdb179798e5427143442fb41a5a7f1fd6ff402270773934478a5211bd2fe19292b96f7d91db723361a6d081602756305ebe9a

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

Filesize
791KB

MD5
32472c66a6a689be7e6903f1f360cec6

SHA1
29dfb3a5e493ae6cdf90bcf856ac9c497c4889ea

SHA256
6fe18b376f52890d3a0800621c00e043996dbd2027899f84173b13b0b9394349

SHA512
aad8455001ed3d53d6e05fec658cdb179798e5427143442fb41a5a7f1fd6ff402270773934478a5211bd2fe19292b96f7d91db723361a6d081602756305ebe9a

Download Submit
memory/596-61-0x0000000000000000-mapping.dmp

Download
memory/676-57-0x0000000000000000-mapping.dmp

Download
memory/1252-54-0x0000000076381000-0x0000000076383000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads