darkcomet | f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef

Analysis

max time kernel
150s
max time network
17s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
18-10-2024 04:31

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General

Target

f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Size

708KB
MD5

4cc6c28d2beacff83e9f12bfc0120565
SHA1

a1c8e595a6d1ac1043fe50e93d87e883d54a3fdf
SHA256

f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef
SHA512

bd8aa7e44c1e780d41af98970073c39fd399145e9cd55d05f69511aa4dcdc6d964844a128c8ea38aab0f9804466c796fec3907186b83cbac68567c035e070fc9
SSDEEP

12288:eIh4EY1awKtBnrtw8bzRpyMObDkeFsB7pyCEbSTiTwRkfy9h4ORA/KjWHZ1dAx9u:eFoXBnpw8bzRhObDkvEbSDKC2UmKaHZd

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

minunip.no-ip.org:99

Mutex

DC_MUTEX-UZ2SU8T

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
zXVjGZvnzDQ0
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

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"	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe

Executes dropped EXE 2 IoCs

pid	Process
2708	msdcsc.exe
3016	msdcsc.exe

Loads dropped DLL 3 IoCs

pid	Process
2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
2708	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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\rundll32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\rundll32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2540 set thread context of 2464	2540	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe	29
PID 2708 set thread context of 3016	2708	msdcsc.exe	31

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 4 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	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: SeSecurityPrivilege	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: SeTakeOwnershipPrivilege	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: SeLoadDriverPrivilege	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: SeSystemProfilePrivilege	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: SeSystemtimePrivilege	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: SeProfSingleProcessPrivilege	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: SeIncBasePriorityPrivilege	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: SeCreatePagefilePrivilege	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: SeBackupPrivilege	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: SeRestorePrivilege	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: SeShutdownPrivilege	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: SeDebugPrivilege	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: SeSystemEnvironmentPrivilege	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: SeChangeNotifyPrivilege	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: SeRemoteShutdownPrivilege	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: SeUndockPrivilege	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: SeManageVolumePrivilege	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: SeImpersonatePrivilege	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: SeCreateGlobalPrivilege	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: 33	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: 34	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: 35	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
Token: SeIncreaseQuotaPrivilege	3016	msdcsc.exe
Token: SeSecurityPrivilege	3016	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3016	msdcsc.exe
Token: SeLoadDriverPrivilege	3016	msdcsc.exe
Token: SeSystemProfilePrivilege	3016	msdcsc.exe
Token: SeSystemtimePrivilege	3016	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3016	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3016	msdcsc.exe
Token: SeCreatePagefilePrivilege	3016	msdcsc.exe
Token: SeBackupPrivilege	3016	msdcsc.exe
Token: SeRestorePrivilege	3016	msdcsc.exe
Token: SeShutdownPrivilege	3016	msdcsc.exe
Token: SeDebugPrivilege	3016	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3016	msdcsc.exe
Token: SeChangeNotifyPrivilege	3016	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3016	msdcsc.exe
Token: SeUndockPrivilege	3016	msdcsc.exe
Token: SeManageVolumePrivilege	3016	msdcsc.exe
Token: SeImpersonatePrivilege	3016	msdcsc.exe
Token: SeCreateGlobalPrivilege	3016	msdcsc.exe
Token: 33	3016	msdcsc.exe
Token: 34	3016	msdcsc.exe
Token: 35	3016	msdcsc.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
2540	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
2540	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
2708	msdcsc.exe
2708	msdcsc.exe
3016	msdcsc.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2540 wrote to memory of 2464	2540	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe	29
PID 2540 wrote to memory of 2464	2540	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe	29
PID 2540 wrote to memory of 2464	2540	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe	29
PID 2540 wrote to memory of 2464	2540	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe	29
PID 2540 wrote to memory of 2464	2540	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe	29
PID 2540 wrote to memory of 2464	2540	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe	29
PID 2540 wrote to memory of 2464	2540	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe	29
PID 2540 wrote to memory of 2464	2540	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe	29
PID 2540 wrote to memory of 2464	2540	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe	29
PID 2540 wrote to memory of 2464	2540	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe	29
PID 2540 wrote to memory of 2464	2540	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe	29
PID 2540 wrote to memory of 2464	2540	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe	29
PID 2464 wrote to memory of 2708	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe	30
PID 2464 wrote to memory of 2708	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe	30
PID 2464 wrote to memory of 2708	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe	30
PID 2464 wrote to memory of 2708	2464	f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe	30
PID 2708 wrote to memory of 3016	2708	msdcsc.exe	31
PID 2708 wrote to memory of 3016	2708	msdcsc.exe	31
PID 2708 wrote to memory of 3016	2708	msdcsc.exe	31
PID 2708 wrote to memory of 3016	2708	msdcsc.exe	31
PID 2708 wrote to memory of 3016	2708	msdcsc.exe	31
PID 2708 wrote to memory of 3016	2708	msdcsc.exe	31
PID 2708 wrote to memory of 3016	2708	msdcsc.exe	31
PID 2708 wrote to memory of 3016	2708	msdcsc.exe	31
PID 2708 wrote to memory of 3016	2708	msdcsc.exe	31
PID 2708 wrote to memory of 3016	2708	msdcsc.exe	31
PID 2708 wrote to memory of 3016	2708	msdcsc.exe	31
PID 2708 wrote to memory of 3016	2708	msdcsc.exe	31

C:\Users\Admin\AppData\Local\Temp\f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
"C:\Users\Admin\AppData\Local\Temp\f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2540
- C:\Users\Admin\AppData\Local\Temp\f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
  C:\Users\Admin\AppData\Local\Temp\f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef.exe
  2⤵
  - Modifies WinLogon for persistence
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2464
- - C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2708
  - - C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
      C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:3016

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
708KB

MD5
4cc6c28d2beacff83e9f12bfc0120565

SHA1
a1c8e595a6d1ac1043fe50e93d87e883d54a3fdf

SHA256
f018c0d14c1b9ef5421920538e3e0efe33c91fa3bcd7b56fde9252bf0f5b04ef

SHA512
bd8aa7e44c1e780d41af98970073c39fd399145e9cd55d05f69511aa4dcdc6d964844a128c8ea38aab0f9804466c796fec3907186b83cbac68567c035e070fc9

Download Submit
memory/2464-2-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2464-6-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2464-17-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2464-16-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2464-14-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2464-12-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2464-4-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2464-0-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2464-10-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2464-18-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2464-19-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2464-21-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2464-20-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2464-8-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2464-57-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3016-54-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3016-65-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3016-55-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3016-59-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3016-60-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3016-61-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3016-62-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3016-63-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3016-64-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3016-56-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3016-66-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3016-67-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3016-68-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3016-69-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3016-70-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3016-71-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/3016-72-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads