darkcomet | 88b021b7ca90fd43794747c2a417e74a70c494276d4ebc3cee4c5c9b0d1f68ad

Analysis

max time kernel
148s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
13/04/2024, 01:47

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General

Target
97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Size 663KB
Sample240413-b7wp8ach6x
SHA256 97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8
MD5 c4633cedf3f1b0c1527012a4f67d9a01
SHA1 221067b2868decbddcaf4e1758dfd9c1e7fced94
SHA512 87c107bf0c04b2ffc94fe1f2dd9df5b3e19fee67e15620dab90fa8abac90002f62178ca5fd2d3994b76a156c9b7ae690cf76cc7397c915e75aa445aa60b7c2a4
SSDEEP 12288:O9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9EkNC/:aZ1xuVVjfFoynPaVBUR8f+kN10Ed
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet sazan persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Sazan

0.tcp.eu.ngrok.io:19165:19165

Mutex

DC_MUTEX-AZWBJ2E

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
Py8v2wbhf6PU
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

T1547.004

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"	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.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-1-5-21-776854024-226333264-2052258302-1000\Control Panel\International\Geo\Nation	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe

Deletes itself 1 IoCs

pid	Process
924	notepad.exe

Executes dropped EXE 1 IoCs

pid	Process
3248	msdcsc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-776854024-226333264-2052258302-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-776854024-226333264-2052258302-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 1 IoCs

Web Service

T1102

flow	ioc
13	0.tcp.eu.ngrok.io

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

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\	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: SeSecurityPrivilege	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: SeTakeOwnershipPrivilege	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: SeLoadDriverPrivilege	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: SeSystemProfilePrivilege	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: SeSystemtimePrivilege	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: SeProfSingleProcessPrivilege	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: SeIncBasePriorityPrivilege	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: SeCreatePagefilePrivilege	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: SeBackupPrivilege	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: SeRestorePrivilege	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: SeShutdownPrivilege	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: SeDebugPrivilege	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: SeSystemEnvironmentPrivilege	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: SeChangeNotifyPrivilege	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: SeRemoteShutdownPrivilege	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: SeUndockPrivilege	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: SeManageVolumePrivilege	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: SeImpersonatePrivilege	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: SeCreateGlobalPrivilege	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: 33	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: 34	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: 35	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: 36	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
Token: SeIncreaseQuotaPrivilege	3248	msdcsc.exe
Token: SeSecurityPrivilege	3248	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3248	msdcsc.exe
Token: SeLoadDriverPrivilege	3248	msdcsc.exe
Token: SeSystemProfilePrivilege	3248	msdcsc.exe
Token: SeSystemtimePrivilege	3248	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3248	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3248	msdcsc.exe
Token: SeCreatePagefilePrivilege	3248	msdcsc.exe
Token: SeBackupPrivilege	3248	msdcsc.exe
Token: SeRestorePrivilege	3248	msdcsc.exe
Token: SeShutdownPrivilege	3248	msdcsc.exe
Token: SeDebugPrivilege	3248	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3248	msdcsc.exe
Token: SeChangeNotifyPrivilege	3248	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3248	msdcsc.exe
Token: SeUndockPrivilege	3248	msdcsc.exe
Token: SeManageVolumePrivilege	3248	msdcsc.exe
Token: SeImpersonatePrivilege	3248	msdcsc.exe
Token: SeCreateGlobalPrivilege	3248	msdcsc.exe
Token: 33	3248	msdcsc.exe
Token: 34	3248	msdcsc.exe
Token: 35	3248	msdcsc.exe
Token: 36	3248	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3248	msdcsc.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1572 wrote to memory of 924	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe	80
PID 1572 wrote to memory of 924	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe	80
PID 1572 wrote to memory of 924	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe	80
PID 1572 wrote to memory of 924	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe	80
PID 1572 wrote to memory of 924	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe	80
PID 1572 wrote to memory of 924	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe	80
PID 1572 wrote to memory of 924	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe	80
PID 1572 wrote to memory of 924	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe	80
PID 1572 wrote to memory of 924	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe	80
PID 1572 wrote to memory of 924	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe	80
PID 1572 wrote to memory of 924	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe	80
PID 1572 wrote to memory of 924	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe	80
PID 1572 wrote to memory of 924	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe	80
PID 1572 wrote to memory of 924	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe	80
PID 1572 wrote to memory of 924	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe	80
PID 1572 wrote to memory of 924	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe	80
PID 1572 wrote to memory of 924	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe	80
PID 1572 wrote to memory of 3248	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe	82
PID 1572 wrote to memory of 3248	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe	82
PID 1572 wrote to memory of 3248	1572	97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe	82

C:\Users\Admin\AppData\Local\Temp\97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.exe
"C:\Users\Admin\AppData\Local\Temp\97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8.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:1572
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Deletes itself
  PID:924
- 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:3248

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

msdcsc.exe

Path C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Size 663KB
SHA256 97e952e79c07ce103290267a4209cadcb96b010ea18d4d7932d4649eb242afc8
MD5 c4633cedf3f1b0c1527012a4f67d9a01
SHA1 221067b2868decbddcaf4e1758dfd9c1e7fced94
SHA512 87c107bf0c04b2ffc94fe1f2dd9df5b3e19fee67e15620dab90fa8abac90002f62178ca5fd2d3994b76a156c9b7ae690cf76cc7397c915e75aa445aa60b7c2a4
SSDEEP 12288:O9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9EkNC/:aZ1xuVVjfFoynPaVBUR8f+kN10Ed
MD5 SHA1 SHA512 SSDEEP

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memory/924-3-0x0000000000690000-0x0000000000691000-memory.dmp

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memory/1572-0-0x0000000002410000-0x0000000002411000-memory.dmp

Download

memory/1572-63-0x0000000000400000-0x00000000004B3000-memory.dmp

Download

memory/3248-62-0x00000000021D0000-0x00000000021D1000-memory.dmp

Download

memory/3248-65-0x0000000000400000-0x00000000004B3000-memory.dmp

Download

memory/3248-67-0x0000000000400000-0x00000000004B3000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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