Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/04/2024, 11:44

General

  • Target
    reducer.exe
  • Size 29KB
  • Sample240404-nv8v8sef94
  • SHA256 d01b49ea8c4f9215e0838147fb4eb5909c6298e9f1314e7401faf0d6cbc5d9e0
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • discordrat

Attributes
  • discord_token

    MTEyOTg3Mzk2MjY0MjQ2MDc3Mw.GVoB7q.zgQTyRC6__mUfWAQ71TKowd69RCw5b2gtOewvc

  • server_id

    979482293682978877

Signatures

  • Discord RAT

    A RAT written in C# using Discord as a C2.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\reducer.exe
    "C:\Users\Admin\AppData\Local\Temp\reducer.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Suspicious use of WriteProcessMemory
    PID:4252
    • C:\Users\Admin\AppData\Local\Temp\DriverFolder\Reducer.exe
      "C:\Users\Admin\AppData\Local\Temp\DriverFolder\Reducer.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:884
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c pause
      2⤵
        PID:1876

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          Reducer.exe

          • Path C:\Users\Admin\AppData\Local\Temp\DriverFolder\Reducer.exe
          • Size 78KB
          • SHA256 a9e915cdf40d63a220b00b2391859d240969293bb489d2c78b55273079793a15
          • MD5 SHA1 SHA512 SSDEEP

          memory/884-27-0x00000252D8560000-0x00000252D8578000-memory.dmp

          memory/884-30-0x00000252F2BF0000-0x00000252F2DB2000-memory.dmp

          memory/884-32-0x00007FFA7C4C0000-0x00007FFA7CF81000-memory.dmp

          memory/884-33-0x00000252F2B50000-0x00000252F2B60000-memory.dmp

          memory/884-34-0x00000252F3CE0000-0x00000252F4208000-memory.dmp

          memory/884-35-0x00007FFA7C4C0000-0x00007FFA7CF81000-memory.dmp

          memory/884-36-0x00000252F2B50000-0x00000252F2B60000-memory.dmp