Overview

overview

10

Static

static

82d559a7e5...ec.exe

windows7-x64

10

82d559a7e5...ec.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    152s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 15:31

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General

  • Target

    82d559a7e5b90b8c3844f5405388f31501d03771535ad69ec3b24f30f473e6ec.exe

  • Size

    764KB

  • MD5

    72424af22fd4bda472713106e905af9b

  • SHA1

    f2e8e93369c973daad899265d4308fd195a3ac28

  • SHA256

    82d559a7e5b90b8c3844f5405388f31501d03771535ad69ec3b24f30f473e6ec

  • SHA512

    4b3285af8793e71d58e91d2abfa76bbab4bf7e6e3d7035686f2af98d5b5950fdc551fab78654067b90c580a69f1c9fc78067e34517e47b4d20b2ebc23711bdc2

  • SSDEEP

    12288:hYmt0E2jF7bXNbG8a31+r+4jFn3udW5yDSNrSgXmtLc8/NU:hYFE2jNb9bGgjJemRX7mN

Score
10/10
darkcomet829persistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

829

C2

kelgr95167.crabdance.com:4390

kelgr95167.crabdance.com:4391
Mutex

DC_MUTEX-RJ23YU3

Attributes
  • gencode

    cGAxaBVeCxjm

  • install

    false

  • offline_keylogger

    true

  • persistence

    false

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

    trojanratdarkcomet
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 25 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\82d559a7e5b90b8c3844f5405388f31501d03771535ad69ec3b24f30f473e6ec.exe
    "C:\Users\Admin\AppData\Local\Temp\82d559a7e5b90b8c3844f5405388f31501d03771535ad69ec3b24f30f473e6ec.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1688
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v shell /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\IjqlzCUk\UQNF1Xp.exe,explorer.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:628
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v shell /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\IjqlzCUk\UQNF1Xp.exe,explorer.exe"
        3⤵
        • Modifies WinLogon for persistence
        PID:2252
    • C:\Users\Admin\AppData\Local\Temp\82d559a7e5b90b8c3844f5405388f31501d03771535ad69ec3b24f30f473e6ec.exe
      "C:\Users\Admin\AppData\Local\Temp\82d559a7e5b90b8c3844f5405388f31501d03771535ad69ec3b24f30f473e6ec.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:3056

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\82d559a7e5b90b8c3844f5405388f31501d03771535ad69ec3b24f30f473e6ec.exe
    Filesize

    764KB

    MD5

    72424af22fd4bda472713106e905af9b

    SHA1

    f2e8e93369c973daad899265d4308fd195a3ac28

    SHA256

    82d559a7e5b90b8c3844f5405388f31501d03771535ad69ec3b24f30f473e6ec

    SHA512

    4b3285af8793e71d58e91d2abfa76bbab4bf7e6e3d7035686f2af98d5b5950fdc551fab78654067b90c580a69f1c9fc78067e34517e47b4d20b2ebc23711bdc2

    Download Submit
  • memory/628-134-0x0000000000000000-mapping.dmp
    Download
  • memory/1688-132-0x0000000075500000-0x0000000075AB1000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/1688-133-0x0000000075500000-0x0000000075AB1000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/1688-141-0x0000000075500000-0x0000000075AB1000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/2252-135-0x0000000000000000-mapping.dmp
    Download
  • memory/3056-136-0x0000000000000000-mapping.dmp
    Download
  • memory/3056-137-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

    Download
  • memory/3056-139-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

    Download
  • memory/3056-140-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

    Download
  • memory/3056-142-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

    Download
  • memory/3056-143-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

    Download