Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/06/2024, 04:41

General

  • Target
    2024-06-10_207c6dffaf7f501f67ebd97e299f510b_cryptolocker.exe
  • Size 39KB
  • Sample240610-fbgcwach29
  • SHA256 9c102dd85e165bf8b1053a0d89dd1d248177000a0859d96310f7e0d352273ed0
  • 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\2024-06-10_207c6dffaf7f501f67ebd97e299f510b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-10_207c6dffaf7f501f67ebd97e299f510b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4528
    • C:\Users\Admin\AppData\Local\Temp\rewok.exe
      "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
      2⤵
      • Executes dropped EXE
      PID:2924

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        rewok.exe

        • Path C:\Users\Admin\AppData\Local\Temp\rewok.exe
        • Size 39KB
        • SHA256 72d553f2be825f4b137d4814c5f2be01bd96c26a2edd770676c3ffe2170d3e00
        • MD5 SHA1 SHA512 SSDEEP

        memory/2924-25-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

        memory/4528-0-0x00000000005D0000-0x00000000005D6000-memory.dmp

        memory/4528-1-0x0000000000400000-0x0000000000406000-memory.dmp

        memory/4528-8-0x00000000005D0000-0x00000000005D6000-memory.dmp