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Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/11/2022, 02:08

General

  • Target

    c40b65558d773d5148551fd3d0b2f4c002c5d16df2f0077afd15d10db0be7848.exe

  • Size

    1.5MB

  • MD5

    a7c3c8e1992dca26a686c79747b391d5

  • SHA1

    716ee44002ac35a4201850ef52bf9f08b037c5ce

  • SHA256

    c40b65558d773d5148551fd3d0b2f4c002c5d16df2f0077afd15d10db0be7848

  • SHA512

    2c59435f875fcf3ceb38cd9a4bb89cb29f9e1a42e7e26206b9636df888eaf074dc7bad8331e57cd8d6860db85edc23a7f0fb6330f7f65ebe6d61cd7e8dd50b17

  • SSDEEP

    24576:Xtb20pkaCqT5TBWgNQ7aC377sxJa2ALeGzaa7dNoxEH/MoZI8ndKJ6A:UVg5tQ7aC377sraXeUpNoxEfdZIB5

Malware Config

Extracted

Family

darkcomet

Botnet

Default

C2

1336imm.noip.me:1336

Mutex

DCMIN_MUTEX-DJ6DL69

Attributes
  • gencode

    rJML8aXpsfPK

  • install

    false

  • offline_keylogger

    true

  • persistence

    false

Signatures

  • Darkcomet

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

  • Executes dropped EXE 1 IoCs
  • 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
  • AutoIT Executable 2 IoCs

    AutoIT scripts compiled to PE executables.

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

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

  • NTFS ADS 3 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 7 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c40b65558d773d5148551fd3d0b2f4c002c5d16df2f0077afd15d10db0be7848.exe
    "C:\Users\Admin\AppData\Local\Temp\c40b65558d773d5148551fd3d0b2f4c002c5d16df2f0077afd15d10db0be7848.exe"
    1⤵
    • Checks computer location settings
    • NTFS ADS
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:4996
    • C:\Users\Admin\AppData\Roaming\27207.exe
      "C:\Users\Admin\AppData\Roaming\27207.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • NTFS ADS
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:3252
      • C:\Windows\SysWOW64\WerFault.exe
        "C:\Windows\SysWOW64\WerFault.exe"
        3⤵
          PID:1240

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\r

      Filesize

      1KB

      MD5

      8db5d85d4e4fdd5502d657ac2f777304

      SHA1

      c0e5a0782cf843aa2e82c36a1df367d8ea5c03d4

      SHA256

      af005b46e08dddc9820363673bc425500f5ed7ab5c30f26f3ce273b8f9971f5c

      SHA512

      acc00a26d8177723fe8c8caf413e88d72c446d9a56d459b8748102a90cbfb1a56e9df9c2d7db40eb5b6d4888ec9519e7af715d23644d99ceb33fd0c8081835ff

    • C:\Users\Admin\AppData\Roaming\27207.exe

      Filesize

      1.5MB

      MD5

      a7c3c8e1992dca26a686c79747b391d5

      SHA1

      716ee44002ac35a4201850ef52bf9f08b037c5ce

      SHA256

      c40b65558d773d5148551fd3d0b2f4c002c5d16df2f0077afd15d10db0be7848

      SHA512

      2c59435f875fcf3ceb38cd9a4bb89cb29f9e1a42e7e26206b9636df888eaf074dc7bad8331e57cd8d6860db85edc23a7f0fb6330f7f65ebe6d61cd7e8dd50b17

    • C:\Users\Admin\AppData\Roaming\27207.exe

      Filesize

      1.5MB

      MD5

      a7c3c8e1992dca26a686c79747b391d5

      SHA1

      716ee44002ac35a4201850ef52bf9f08b037c5ce

      SHA256

      c40b65558d773d5148551fd3d0b2f4c002c5d16df2f0077afd15d10db0be7848

      SHA512

      2c59435f875fcf3ceb38cd9a4bb89cb29f9e1a42e7e26206b9636df888eaf074dc7bad8331e57cd8d6860db85edc23a7f0fb6330f7f65ebe6d61cd7e8dd50b17

    • memory/1240-138-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/1240-139-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/1240-140-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB