Analysis

  • max time kernel
    145s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/02/2024, 01:56

General

  • Target
    2024-02-29_e3d9f6e323aac9d99bd436c320f1f3ca_cryptolocker.exe
  • Size 65KB
  • Sample240229-cctg2sag41
  • SHA256 c2290e4375d8a7c365ea2a96446ace29ce712bd245893cdd94538430f9133a60
  • 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 2 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\2024-02-29_e3d9f6e323aac9d99bd436c320f1f3ca_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-29_e3d9f6e323aac9d99bd436c320f1f3ca_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3044
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:3616

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        misid.exe

        • Path C:\Users\Admin\AppData\Local\Temp\misid.exe
        • Size 65KB
        • SHA256 0e33ad1eba29451d7b5132d21091b4fa24e52d52940c224cbb3df9da7f004afe
        • MD5 SHA1 SHA512 SSDEEP

        memory/3044-0-0x0000000000520000-0x0000000000526000-memory.dmp

        memory/3044-1-0x0000000000520000-0x0000000000526000-memory.dmp

        memory/3044-2-0x0000000000640000-0x0000000000646000-memory.dmp

        memory/3616-17-0x0000000002000000-0x0000000002006000-memory.dmp

        memory/3616-20-0x00000000004E0000-0x00000000004E6000-memory.dmp