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Analysis

  • max time kernel
    126s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    30/01/2022, 16:09

General

  • Target

    6c917faa1a5ea5ae74525ace0c39c4a9208cb48f64372b8cd97c2e6e96a957db.exe

  • Size

    1.1MB

  • MD5

    645d2fdc3d638b6e9eeeda9bf7bd332b

  • SHA1

    380150520be6c22ec302d0f89ac1f312a7b2dfa6

  • SHA256

    6c917faa1a5ea5ae74525ace0c39c4a9208cb48f64372b8cd97c2e6e96a957db

  • SHA512

    a1ac538eaf42f522f05c04833d6bdb736489f6c702f5bb74435fcaa5b80241ad9e69a3088e9b16a665d1140cc4d5ba0f8326a6092147b0be93cb9cb705297539

Score
10/10

Malware Config

Signatures

  • CrimsonRAT Main Payload 2 IoCs
  • CrimsonRat

    Crimson RAT is a malware linked to a Pakistani-linked threat actor.

  • Executes dropped EXE 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6c917faa1a5ea5ae74525ace0c39c4a9208cb48f64372b8cd97c2e6e96a957db.exe
    "C:\Users\Admin\AppData\Local\Temp\6c917faa1a5ea5ae74525ace0c39c4a9208cb48f64372b8cd97c2e6e96a957db.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:536
    • C:\ProgramData\Rharbwd\ntharprmes.exe
      "C:\ProgramData\Rharbwd\ntharprmes.exe"
      2⤵
      • Executes dropped EXE
      PID:1804

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/536-55-0x0000000000A90000-0x0000000000A92000-memory.dmp

    Filesize

    8KB

  • memory/536-56-0x000007FEF2B90000-0x000007FEF3C26000-memory.dmp

    Filesize

    16.6MB

  • memory/536-57-0x0000000000A96000-0x0000000000AB5000-memory.dmp

    Filesize

    124KB

  • memory/1804-60-0x000007FEF2B90000-0x000007FEF3C26000-memory.dmp

    Filesize

    16.6MB

  • memory/1804-61-0x0000000000B70000-0x0000000000B72000-memory.dmp

    Filesize

    8KB

  • memory/1804-62-0x0000000000B76000-0x0000000000B95000-memory.dmp

    Filesize

    124KB