Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/05/2024, 22:33

General

  • Target

    2024-05-14_f6a99eec559615c90703788cbbebf76b_cryptolocker.exe

  • Size

    44KB

  • MD5

    f6a99eec559615c90703788cbbebf76b

  • SHA1

    7489109864197831705b6acff1f2f3ad3c6a89fc

  • SHA256

    bba93607627e91f35f5ded654c3d2aa57ef6065fcd92a3b1313735c60aa0bc1d

  • SHA512

    8b169d51bc44004feb3ea75c32599165d5a10fff5af81cdbd2afa8d53df4a9c4939f955df178e7c2b2e9656bf39aafd5e83eefc5628b2c33c4ef7d3d94356775

  • SSDEEP

    384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUpaSw0:bm74zYcgT/Ekn0ryfjR10

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-14_f6a99eec559615c90703788cbbebf76b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-14_f6a99eec559615c90703788cbbebf76b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4344
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:4608

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\hasfj.exe

          Filesize

          44KB

          MD5

          519562d543302867569e072c1e4fb99e

          SHA1

          6ce80fc5fb7e84e07fc94cc32bc9fdd5f20036db

          SHA256

          3af0840c0765723c3eed2e9e79f317220638faba8729fd4400409e9226e21051

          SHA512

          d274aa3dfd10c78f3b58afb169bb4c17f33a4ec3e4acdc709d4c09aa59e1a443a202fab51062f09ea86a1668feb5d7da8cb3425cd6c123f040c694dec4258158

        • memory/4344-0-0x0000000008000000-0x000000000800D000-memory.dmp

          Filesize

          52KB

        • memory/4344-1-0x0000000002250000-0x0000000002256000-memory.dmp

          Filesize

          24KB

        • memory/4344-2-0x0000000003150000-0x0000000003156000-memory.dmp

          Filesize

          24KB

        • memory/4344-9-0x0000000002250000-0x0000000002256000-memory.dmp

          Filesize

          24KB

        • memory/4344-16-0x0000000008000000-0x000000000800D000-memory.dmp

          Filesize

          52KB

        • memory/4608-17-0x0000000008000000-0x000000000800D000-memory.dmp

          Filesize

          52KB

        • memory/4608-20-0x0000000002380000-0x0000000002386000-memory.dmp

          Filesize

          24KB

        • memory/4608-26-0x0000000002350000-0x0000000002356000-memory.dmp

          Filesize

          24KB

        • memory/4608-27-0x0000000008000000-0x000000000800D000-memory.dmp

          Filesize

          52KB