Analysis

  • max time kernel
    150s
  • 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
    12/06/2024, 15:24

General

  • Target
    2024-06-12_1474bcfe854e7cdc9115bdae367dd3ee_cryptolocker.exe
  • Size 49KB
  • Sample240612-ss7bvatekk
  • SHA256 a1837d44794ebfeff45a5ed6015b345a353d75eac27c69dfe113c3720b560a9c
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 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\2024-06-12_1474bcfe854e7cdc9115bdae367dd3ee_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-12_1474bcfe854e7cdc9115bdae367dd3ee_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:716
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:3008

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 49KB
        • SHA256 c4062e2c0e9339f260c3560b5fabd9c3f215fbc2300fed2f4bdae7a30144ae7e
        • MD5 SHA1 SHA512 SSDEEP

        memory/716-0-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/716-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

        memory/716-2-0x0000000002100000-0x0000000002106000-memory.dmp

        memory/716-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

        memory/716-16-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/3008-18-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/3008-20-0x0000000002070000-0x0000000002076000-memory.dmp

        memory/3008-26-0x0000000002150000-0x0000000002156000-memory.dmp

        memory/3008-27-0x0000000000500000-0x0000000000510000-memory.dmp