darkcomet | 6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19

Resubmissions

05/02/2025, 07:16

250205-h37egsxmgp10

01/10/2022, 23:38

221001-3mnmnaddfk10

Analysis

max time kernel
152s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
01/10/2022, 23:38

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General

Target
6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Size 756KB
Sample221001-3mnmnaddfk
SHA256 6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19
MD5 03b6b6a9f2714fb4102b9cbdf6516021
SHA1 ca58b17036e13680e099b14f1425872ad4818468
SHA512 cbea332541d72dc100241abcf968b797b826b1ba172b213dd92487d4178846fb96bb761a7415ddfdb990e872bac3512bcf01e98ec37cb454491fa08c765b8edd
SSDEEP 12288:V9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hV:fZ1xuVVjfFoynPaVBUR8f+kN10EBj
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet ??????? ?????persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

??????? ?????

samassim.no-ip.biz:1034

Mutex

DC_MUTEX-M8L7C9X

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
uAUVGv1cv31e
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

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"	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe

Executes dropped EXE 1 IoCs

pid	Process
4688	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\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

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: SeSecurityPrivilege	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: SeTakeOwnershipPrivilege	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: SeLoadDriverPrivilege	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: SeSystemProfilePrivilege	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: SeSystemtimePrivilege	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: SeProfSingleProcessPrivilege	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: SeIncBasePriorityPrivilege	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: SeCreatePagefilePrivilege	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: SeBackupPrivilege	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: SeRestorePrivilege	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: SeShutdownPrivilege	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: SeDebugPrivilege	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: SeSystemEnvironmentPrivilege	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: SeChangeNotifyPrivilege	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: SeRemoteShutdownPrivilege	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: SeUndockPrivilege	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: SeManageVolumePrivilege	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: SeImpersonatePrivilege	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: SeCreateGlobalPrivilege	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: 33	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: 34	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: 35	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: 36	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
Token: SeIncreaseQuotaPrivilege	4688	msdcsc.exe
Token: SeSecurityPrivilege	4688	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4688	msdcsc.exe
Token: SeLoadDriverPrivilege	4688	msdcsc.exe
Token: SeSystemProfilePrivilege	4688	msdcsc.exe
Token: SeSystemtimePrivilege	4688	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4688	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4688	msdcsc.exe
Token: SeCreatePagefilePrivilege	4688	msdcsc.exe
Token: SeBackupPrivilege	4688	msdcsc.exe
Token: SeRestorePrivilege	4688	msdcsc.exe
Token: SeShutdownPrivilege	4688	msdcsc.exe
Token: SeDebugPrivilege	4688	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4688	msdcsc.exe
Token: SeChangeNotifyPrivilege	4688	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4688	msdcsc.exe
Token: SeUndockPrivilege	4688	msdcsc.exe
Token: SeManageVolumePrivilege	4688	msdcsc.exe
Token: SeImpersonatePrivilege	4688	msdcsc.exe
Token: SeCreateGlobalPrivilege	4688	msdcsc.exe
Token: 33	4688	msdcsc.exe
Token: 34	4688	msdcsc.exe
Token: 35	4688	msdcsc.exe
Token: 36	4688	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4688	msdcsc.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4184 wrote to memory of 3380	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe	83
PID 4184 wrote to memory of 3380	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe	83
PID 4184 wrote to memory of 3380	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe	83
PID 4184 wrote to memory of 3380	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe	83
PID 4184 wrote to memory of 3380	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe	83
PID 4184 wrote to memory of 3380	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe	83
PID 4184 wrote to memory of 3380	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe	83
PID 4184 wrote to memory of 3380	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe	83
PID 4184 wrote to memory of 3380	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe	83
PID 4184 wrote to memory of 3380	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe	83
PID 4184 wrote to memory of 3380	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe	83
PID 4184 wrote to memory of 3380	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe	83
PID 4184 wrote to memory of 3380	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe	83
PID 4184 wrote to memory of 3380	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe	83
PID 4184 wrote to memory of 3380	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe	83
PID 4184 wrote to memory of 3380	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe	83
PID 4184 wrote to memory of 3380	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe	83
PID 4184 wrote to memory of 4688	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe	85
PID 4184 wrote to memory of 4688	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe	85
PID 4184 wrote to memory of 4688	4184	6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe	85

C:\Users\Admin\AppData\Local\Temp\6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.exe
"C:\Users\Admin\AppData\Local\Temp\6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19.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:4184
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  PID:3380
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4688

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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msdcsc.exe

Path C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Size 756KB
SHA256 6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19
MD5 03b6b6a9f2714fb4102b9cbdf6516021
SHA1 ca58b17036e13680e099b14f1425872ad4818468
SHA512 cbea332541d72dc100241abcf968b797b826b1ba172b213dd92487d4178846fb96bb761a7415ddfdb990e872bac3512bcf01e98ec37cb454491fa08c765b8edd
SSDEEP 12288:V9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hV:fZ1xuVVjfFoynPaVBUR8f+kN10EBj
MD5 SHA1 SHA512 SSDEEP

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msdcsc.exe

Path C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Size 756KB
SHA256 6d1114427ccb910e86a1059aced36b340933c5b0157592b6f856093fbf209e19
MD5 03b6b6a9f2714fb4102b9cbdf6516021
SHA1 ca58b17036e13680e099b14f1425872ad4818468
SHA512 cbea332541d72dc100241abcf968b797b826b1ba172b213dd92487d4178846fb96bb761a7415ddfdb990e872bac3512bcf01e98ec37cb454491fa08c765b8edd
SSDEEP 12288:V9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hV:fZ1xuVVjfFoynPaVBUR8f+kN10EBj
MD5 SHA1 SHA512 SSDEEP

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Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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