Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/06/2024, 08:30

General

  • Target
    2024-06-08_6e75144d5102222be939073c09205ce5_cryptolocker.exe
  • Size 97KB
  • Sample240608-keg6ssbd65
  • SHA256 e4e4fc4c985d9caaa5485f41e5590cd21da5b58dc70414f151bd1c00aaabf0ea
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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\2024-06-08_6e75144d5102222be939073c09205ce5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-08_6e75144d5102222be939073c09205ce5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:740
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:756

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        asih.exe

        • Path C:\Users\Admin\AppData\Local\Temp\asih.exe
        • Size 97KB
        • SHA256 de5167909c7feff74d7fdfd71961caa5c318cbf8b9429fe173fbfddb6f49f806
        • MD5 SHA1 SHA512 SSDEEP

        memory/740-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

        memory/740-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

        memory/740-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

        memory/756-17-0x0000000001F60000-0x0000000001F66000-memory.dmp

        memory/756-18-0x0000000001F80000-0x0000000001F86000-memory.dmp