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Analysis

  • max time kernel
    140s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/11/2022, 00:23

General

  • Target

    54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe

  • Size

    271KB

  • MD5

    c239c75c787b2181d8dc1a0882b4a159

  • SHA1

    a0e573b00493677797969c52e3c30e3d145e0eae

  • SHA256

    54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea

  • SHA512

    ab4aede8fb02bf481336004c6ce90806852bb39de431fd4d028ee7c048390beab680debb851eec36d40c71f971d41370ed1f3b2fa3782cae7489d9b8a2a7dcc8

  • SSDEEP

    6144:XgfVPno0A98mfqyFD2ibY6aRwqlg1NpHcCxxuTklqttnN4l:XgfBo0iqyFD2ijs2B9cbbal

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

212.7.208.94:16047

Mutex

DC_MUTEX-AUBVEGH

Attributes
  • gencode

    YutS7R9UNRic

  • install

    false

  • offline_keylogger

    true

  • persistence

    false

Signatures

  • Darkcomet

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

  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 25 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe
    "C:\Users\Admin\AppData\Local\Temp\54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4816
    • C:\Windows\SysWOW64\explorer.exe
      "C:\Windows\System32\explorer.exe" C:\Users\Admin\AppData\Roaming\QObrNNBeF.vbs
      2⤵
        PID:1960
      • C:\Users\Admin\AppData\Local\Temp\54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe
        "C:\Users\Admin\AppData\Local\Temp\54cb5b421df95ed5d7f6ce8756693f467a95aadfd7b038a95d8aaf1433a419ea.exe"
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1516
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:3536
      • C:\Windows\System32\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\QObrNNBeF.vbs"
        2⤵
        • Adds Run key to start application
        PID:4500

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\QObrNNBeF.vbs

      Filesize

      601B

      MD5

      3f9a9f31e88eb653e15525f7568d2ce3

      SHA1

      7db2de7325dbd8c2574c78f661fc1c28ebc10301

      SHA256

      712461277fd0b416b766321612ba0346c5ae4c2e181f6fbc4d984fdb757d9159

      SHA512

      94810b387cbe26fca10e39f6f4f7cd605caefe69b4f23d5d1d06f764cbb53744c6048a44fd203b85e14318679ab67b2cc11aa50fe6ebc1c821ad970d0c6ea313

    • memory/1516-136-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/1516-137-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/1516-138-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/1516-139-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/1516-140-0x0000000000400000-0x00000000004B7000-memory.dmp

      Filesize

      732KB

    • memory/4816-132-0x0000000075420000-0x00000000759D1000-memory.dmp

      Filesize

      5.7MB

    • memory/4816-133-0x0000000075420000-0x00000000759D1000-memory.dmp

      Filesize

      5.7MB