darkcomet | d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0

Analysis

max time kernel
120s
max time network
117s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
30-11-2024 14:23

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General

Target

d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Size

690KB
MD5

e0252fb44429d388a10f814121992b30
SHA1

3bbe00564cace10ec07a242731e52530b5d43a03
SHA256

d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0
SHA512

291e4c65d1f84a6617ad6a5c8ab3a75fac6d8da0575f172543d696ff8734b96031644de15c0a87331a3a5a456a678cdd0ecb9c530450ebe5f246f1364c0782ae
SSDEEP

12288:J9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hRd:TZ1xuVVjfFoynPaVBUR8f+kN10EBB

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

buttars0070.no-ip.org:200

Mutex

DC_MUTEX-C1L3QWS

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
Xdt6t605B39w
install
true
offline_keylogger
true
persistence
true
reg_key
rundll32

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
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\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe

Executes dropped EXE 1 IoCs

pid	Process
4612	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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rundll32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rundll32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	msdcsc.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: SeSecurityPrivilege	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: SeTakeOwnershipPrivilege	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: SeLoadDriverPrivilege	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: SeSystemProfilePrivilege	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: SeSystemtimePrivilege	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: SeProfSingleProcessPrivilege	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: SeIncBasePriorityPrivilege	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: SeCreatePagefilePrivilege	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: SeBackupPrivilege	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: SeRestorePrivilege	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: SeShutdownPrivilege	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: SeDebugPrivilege	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: SeSystemEnvironmentPrivilege	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: SeChangeNotifyPrivilege	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: SeRemoteShutdownPrivilege	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: SeUndockPrivilege	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: SeManageVolumePrivilege	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: SeImpersonatePrivilege	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: SeCreateGlobalPrivilege	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: 33	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: 34	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: 35	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: 36	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
Token: SeIncreaseQuotaPrivilege	4612	msdcsc.exe
Token: SeSecurityPrivilege	4612	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4612	msdcsc.exe
Token: SeLoadDriverPrivilege	4612	msdcsc.exe
Token: SeSystemProfilePrivilege	4612	msdcsc.exe
Token: SeSystemtimePrivilege	4612	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4612	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4612	msdcsc.exe
Token: SeCreatePagefilePrivilege	4612	msdcsc.exe
Token: SeBackupPrivilege	4612	msdcsc.exe
Token: SeRestorePrivilege	4612	msdcsc.exe
Token: SeShutdownPrivilege	4612	msdcsc.exe
Token: SeDebugPrivilege	4612	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4612	msdcsc.exe
Token: SeChangeNotifyPrivilege	4612	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4612	msdcsc.exe
Token: SeUndockPrivilege	4612	msdcsc.exe
Token: SeManageVolumePrivilege	4612	msdcsc.exe
Token: SeImpersonatePrivilege	4612	msdcsc.exe
Token: SeCreateGlobalPrivilege	4612	msdcsc.exe
Token: 33	4612	msdcsc.exe
Token: 34	4612	msdcsc.exe
Token: 35	4612	msdcsc.exe
Token: 36	4612	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4612	msdcsc.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1204 wrote to memory of 4612	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe	82
PID 1204 wrote to memory of 4612	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe	82
PID 1204 wrote to memory of 4612	1204	d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe	82

C:\Users\Admin\AppData\Local\Temp\d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe
"C:\Users\Admin\AppData\Local\Temp\d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0N.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1204
- C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
  "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4612

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

Filesize
690KB

MD5
e0252fb44429d388a10f814121992b30

SHA1
3bbe00564cace10ec07a242731e52530b5d43a03

SHA256
d9e81eebda7fdfa6bd3b2595f935a4da328ca59e0b33ebf5a9df3043af9df0e0

SHA512
291e4c65d1f84a6617ad6a5c8ab3a75fac6d8da0575f172543d696ff8734b96031644de15c0a87331a3a5a456a678cdd0ecb9c530450ebe5f246f1364c0782ae

Download Submit
memory/1204-62-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1204-0-0x0000000002410000-0x0000000002411000-memory.dmp

Filesize
4KB

Download
memory/4612-65-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4612-63-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4612-64-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4612-61-0x00000000007D0000-0x00000000007D1000-memory.dmp

Filesize
4KB

Download
memory/4612-66-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4612-67-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4612-68-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4612-69-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4612-70-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4612-71-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4612-72-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/4612-73-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads