Analysis

  • max time kernel
    13s
  • max time network
    110s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    05-05-2021 00:51

General

  • Target

    a2dff7ad9fd1ba464b6e116e783130b22fd809b0384acdf55d5b075cdba71fcb.exe

  • Size

    658KB

  • MD5

    f0016753a0f7d4a77577219f32cbe1a3

  • SHA1

    8cf1834af6492053e1d52c202e2f447978d36898

  • SHA256

    a2dff7ad9fd1ba464b6e116e783130b22fd809b0384acdf55d5b075cdba71fcb

  • SHA512

    285ddc39de01fb5b57ef95102cfb085847274b41a91b90de6c01dfa3f0c553f3c5968750cd9577f681eed7b18ca23530c2a186821b28468665078ad9c76f1c8a

Malware Config

Extracted

Family

darkcomet

Botnet

Junior_Sazan

C2

tcp.ngrok.io:1604

Mutex

DCMIN_MUTEX-TGBV1JW

Attributes
  • InstallPath

    DCSCMIN\IMDCSC.exe

  • gencode

    DYogjpAqTBHJ

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    Windows Defender

Signatures

  • Darkcomet

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a2dff7ad9fd1ba464b6e116e783130b22fd809b0384acdf55d5b075cdba71fcb.exe
    "C:\Users\Admin\AppData\Local\Temp\a2dff7ad9fd1ba464b6e116e783130b22fd809b0384acdf55d5b075cdba71fcb.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3904
    • C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe
      "C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:3944

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe

    MD5

    f0016753a0f7d4a77577219f32cbe1a3

    SHA1

    8cf1834af6492053e1d52c202e2f447978d36898

    SHA256

    a2dff7ad9fd1ba464b6e116e783130b22fd809b0384acdf55d5b075cdba71fcb

    SHA512

    285ddc39de01fb5b57ef95102cfb085847274b41a91b90de6c01dfa3f0c553f3c5968750cd9577f681eed7b18ca23530c2a186821b28468665078ad9c76f1c8a

  • C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe

    MD5

    f0016753a0f7d4a77577219f32cbe1a3

    SHA1

    8cf1834af6492053e1d52c202e2f447978d36898

    SHA256

    a2dff7ad9fd1ba464b6e116e783130b22fd809b0384acdf55d5b075cdba71fcb

    SHA512

    285ddc39de01fb5b57ef95102cfb085847274b41a91b90de6c01dfa3f0c553f3c5968750cd9577f681eed7b18ca23530c2a186821b28468665078ad9c76f1c8a

  • memory/3904-114-0x0000000002370000-0x0000000002371000-memory.dmp

    Filesize

    4KB

  • memory/3944-115-0x0000000000000000-mapping.dmp

  • memory/3944-118-0x0000000000640000-0x0000000000641000-memory.dmp

    Filesize

    4KB