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
    09/06/2024, 07:28

General

  • Target
    2024-06-09_735e43115af1e74f5581d86b884e04d5_cryptolocker.exe
  • Size 63KB
  • Sample240609-ja3fhagc93
  • SHA256 13c1a79eb366a50c7e8280d724bd0127b6c9bc382570d14871a0323a1ddfedcd
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-06-09_735e43115af1e74f5581d86b884e04d5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-09_735e43115af1e74f5581d86b884e04d5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4816
    • C:\Users\Admin\AppData\Local\Temp\gewos.exe
      "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
      2⤵
      • Executes dropped EXE
      PID:1204

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        gewos.exe

        • Path C:\Users\Admin\AppData\Local\Temp\gewos.exe
        • Size 63KB
        • SHA256 d2bef3290a0c120beff17fcd96b0b0b25bf5fe82d1bbfb0957488e6f0a17ce36
        • MD5 SHA1 SHA512 SSDEEP

        memory/1204-25-0x0000000002120000-0x0000000002126000-memory.dmp

        memory/4816-0-0x0000000002110000-0x0000000002116000-memory.dmp

        memory/4816-1-0x0000000000400000-0x0000000000406000-memory.dmp

        memory/4816-8-0x0000000002110000-0x0000000002116000-memory.dmp