darkcomet | 24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034

General

Target

24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe
Size

891KB
MD5

296716d3fe38809cd1b25f46da59dd90
SHA1

3bc6aea87cf33d17f71ce91118f5257338288835
SHA256

24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034
SHA512

307ebc7c641ec073c2a7ed42310e6a07d5c454825c445704f57298c0b64fe7e871bb7e846613216197ee1f9221486d462be390fd56352bee5675d4b2ec02b6fa
SSDEEP

24576:9fHK4ne0H220E81P/RQmKEhQSt+TrLQse4xoQQZn:dXl3eb1g1CQQ

Score

10^/10

darkcomet discovery persistence rat trojan

Malware Config

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\\Documents\\MSDCSC\\msdcsc.exe"	vbc.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	vbc.exe

Executes dropped EXE 2 IoCs

pid	Process
4560	vbc.exe
2860	msdcsc.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WinUpdtr = "C:\\Users\\Admin\\AppData\\Roaming\\WinUpdtr\\24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe"	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2844 set thread context of 4560	2844	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	82

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 3 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	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.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\	vbc.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4560	vbc.exe
Token: SeSecurityPrivilege	4560	vbc.exe
Token: SeTakeOwnershipPrivilege	4560	vbc.exe
Token: SeLoadDriverPrivilege	4560	vbc.exe
Token: SeSystemProfilePrivilege	4560	vbc.exe
Token: SeSystemtimePrivilege	4560	vbc.exe
Token: SeProfSingleProcessPrivilege	4560	vbc.exe
Token: SeIncBasePriorityPrivilege	4560	vbc.exe
Token: SeCreatePagefilePrivilege	4560	vbc.exe
Token: SeBackupPrivilege	4560	vbc.exe
Token: SeRestorePrivilege	4560	vbc.exe
Token: SeShutdownPrivilege	4560	vbc.exe
Token: SeDebugPrivilege	4560	vbc.exe
Token: SeSystemEnvironmentPrivilege	4560	vbc.exe
Token: SeChangeNotifyPrivilege	4560	vbc.exe
Token: SeRemoteShutdownPrivilege	4560	vbc.exe
Token: SeUndockPrivilege	4560	vbc.exe
Token: SeManageVolumePrivilege	4560	vbc.exe
Token: SeImpersonatePrivilege	4560	vbc.exe
Token: SeCreateGlobalPrivilege	4560	vbc.exe
Token: 33	4560	vbc.exe
Token: 34	4560	vbc.exe
Token: 35	4560	vbc.exe
Token: 36	4560	vbc.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2844 wrote to memory of 4560	2844	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	82
PID 2844 wrote to memory of 4560	2844	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	82
PID 2844 wrote to memory of 4560	2844	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	82
PID 2844 wrote to memory of 4560	2844	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	82
PID 2844 wrote to memory of 4560	2844	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	82
PID 2844 wrote to memory of 4560	2844	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	82
PID 2844 wrote to memory of 4560	2844	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	82
PID 2844 wrote to memory of 4560	2844	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	82
PID 2844 wrote to memory of 4560	2844	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	82
PID 2844 wrote to memory of 4560	2844	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	82
PID 2844 wrote to memory of 4560	2844	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	82
PID 2844 wrote to memory of 4560	2844	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	82
PID 2844 wrote to memory of 4560	2844	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	82
PID 2844 wrote to memory of 4560	2844	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	82
PID 4560 wrote to memory of 2860	4560	vbc.exe	83
PID 4560 wrote to memory of 2860	4560	vbc.exe	83
PID 4560 wrote to memory of 2860	4560	vbc.exe	83

C:\Users\Admin\AppData\Local\Temp\24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe
"C:\Users\Admin\AppData\Local\Temp\24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Users\Admin\AppData\Local\Temp\vbc.exe
  C:\Users\Admin\AppData\Local\Temp\vbc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4560
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\vbc.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/2844-0-0x0000000075562000-0x0000000075563000-memory.dmp

Filesize
4KB

Download
memory/2844-1-0x0000000075560000-0x0000000075B11000-memory.dmp

Filesize
5.7MB

Download
memory/2844-2-0x0000000075560000-0x0000000075B11000-memory.dmp

Filesize
5.7MB

Download
memory/2844-17-0x0000000075560000-0x0000000075B11000-memory.dmp

Filesize
5.7MB

Download
memory/4560-7-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/4560-11-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/4560-14-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/4560-15-0x00000000022B0000-0x00000000022B1000-memory.dmp

Filesize
4KB

Download
memory/4560-12-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/4560-76-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads