Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/05/2024, 23:28

General

  • Target
    2024-05-14_abd2b034d9f7a4776256b77e6a449aa4_cryptolocker.exe
  • Size 30KB
  • Sample240514-3f973sed62
  • SHA256 708e38eccbd35305831f5cdb1eca8f5103f6423287b1cf203992ac31996ca4c0
  • 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\2024-05-14_abd2b034d9f7a4776256b77e6a449aa4_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-14_abd2b034d9f7a4776256b77e6a449aa4_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3280
    • C:\Users\Admin\AppData\Local\Temp\hurok.exe
      "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:2528

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        hurok.exe

        • Path C:\Users\Admin\AppData\Local\Temp\hurok.exe
        • Size 30KB
        • SHA256 8a49b711fe11dfc1d7dd514d796c4fec370b815f381297621797a67fb24efdc5
        • MD5 SHA1 SHA512 SSDEEP

        memory/2528-25-0x00000000004E0000-0x00000000004E6000-memory.dmp

        memory/3280-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

        memory/3280-1-0x0000000000400000-0x0000000000406000-memory.dmp

        memory/3280-8-0x00000000006A0000-0x00000000006A6000-memory.dmp