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

Executes dropped EXE 2 IoCs

pid	Process
2668	vbc.exe
2636	msdcsc.exe

Loads dropped DLL 2 IoCs

pid	Process
2820	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe
2668	vbc.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-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\WinUpdtr = "C:\\Users\\Admin\\AppData\\Roaming\\WinUpdtr\\24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe"	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\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 2820 set thread context of 2668	2820	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	30

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

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2668	vbc.exe
Token: SeSecurityPrivilege	2668	vbc.exe
Token: SeTakeOwnershipPrivilege	2668	vbc.exe
Token: SeLoadDriverPrivilege	2668	vbc.exe
Token: SeSystemProfilePrivilege	2668	vbc.exe
Token: SeSystemtimePrivilege	2668	vbc.exe
Token: SeProfSingleProcessPrivilege	2668	vbc.exe
Token: SeIncBasePriorityPrivilege	2668	vbc.exe
Token: SeCreatePagefilePrivilege	2668	vbc.exe
Token: SeBackupPrivilege	2668	vbc.exe
Token: SeRestorePrivilege	2668	vbc.exe
Token: SeShutdownPrivilege	2668	vbc.exe
Token: SeDebugPrivilege	2668	vbc.exe
Token: SeSystemEnvironmentPrivilege	2668	vbc.exe
Token: SeChangeNotifyPrivilege	2668	vbc.exe
Token: SeRemoteShutdownPrivilege	2668	vbc.exe
Token: SeUndockPrivilege	2668	vbc.exe
Token: SeManageVolumePrivilege	2668	vbc.exe
Token: SeImpersonatePrivilege	2668	vbc.exe
Token: SeCreateGlobalPrivilege	2668	vbc.exe
Token: 33	2668	vbc.exe
Token: 34	2668	vbc.exe
Token: 35	2668	vbc.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2820 wrote to memory of 2668	2820	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	30
PID 2820 wrote to memory of 2668	2820	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	30
PID 2820 wrote to memory of 2668	2820	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	30
PID 2820 wrote to memory of 2668	2820	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	30
PID 2820 wrote to memory of 2668	2820	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	30
PID 2820 wrote to memory of 2668	2820	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	30
PID 2820 wrote to memory of 2668	2820	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	30
PID 2820 wrote to memory of 2668	2820	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	30
PID 2820 wrote to memory of 2668	2820	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	30
PID 2820 wrote to memory of 2668	2820	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	30
PID 2820 wrote to memory of 2668	2820	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	30
PID 2820 wrote to memory of 2668	2820	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	30
PID 2820 wrote to memory of 2668	2820	24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe	30
PID 2668 wrote to memory of 2636	2668	vbc.exe	31
PID 2668 wrote to memory of 2636	2668	vbc.exe	31
PID 2668 wrote to memory of 2636	2668	vbc.exe	31
PID 2668 wrote to memory of 2636	2668	vbc.exe	31

C:\Users\Admin\AppData\Local\Temp\24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe
"C:\Users\Admin\AppData\Local\Temp\24628b984b3ffc419280b75cc4b7a44e4dcfa2ef836aa6d6b36e01787bccc034N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2820
- C:\Users\Admin\AppData\Local\Temp\vbc.exe
  C:\Users\Admin\AppData\Local\Temp\vbc.exe
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2668
- - 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:2636

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

System Information Discovery

1

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

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

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
memory/2668-32-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2668-17-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2668-25-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2668-23-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2668-27-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2668-29-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2668-30-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2668-11-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2668-43-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2668-14-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2668-9-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2668-21-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2668-20-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2668-15-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2820-2-0x0000000074330000-0x00000000748DB000-memory.dmp

Filesize
5.7MB

Download
memory/2820-1-0x0000000074330000-0x00000000748DB000-memory.dmp

Filesize
5.7MB

Download
memory/2820-0-0x0000000074331000-0x0000000074332000-memory.dmp

Filesize
4KB

Download
memory/2820-31-0x0000000074330000-0x00000000748DB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads