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
    11/06/2024, 01:10

General

  • Target

    2024-06-11_41e12fef682552006eb6b091f84cf435_cryptolocker.exe

  • Size

    40KB

  • MD5

    41e12fef682552006eb6b091f84cf435

  • SHA1

    06c210cabae5d49e3129f65a8acf4ee2dce051ff

  • SHA256

    f50afaf32b4de0859d9ed5d7fa9c10203032e8ae5f2cbab16606713766b13c83

  • SHA512

    feda7b2baa1bb5ebdefcbb6099a0d6cb8a165510e1f7c54f27a2ca92b5a3d4a2936fb63f42b3e69ec9d3fbeda3ace655872bb327ec8f4cbcaf2901c542ec5566

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYXtt:qDdFJy3QMOtEvwDpjjWMl7TYt

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 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
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\2024-06-11_41e12fef682552006eb6b091f84cf435_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_41e12fef682552006eb6b091f84cf435_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1004
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3196

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\asih.exe

          Filesize

          40KB

          MD5

          6f6916a106036b9a313bd317b1af97c9

          SHA1

          17e935e47756a954bd892f384e9521123ecb8a04

          SHA256

          94cab0155fe1edff174c206015a26ced2e9d57b18366da88c667673294623a10

          SHA512

          276e2ee84ae44db7387c5a579edddcddece701fc70f93d99bbb3a5a9990073cf32c517d3465ca02d7304a4a3503a62441341354016beee3493c65dbe4f509c68

        • memory/1004-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/1004-1-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/1004-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

          Filesize

          24KB

        • memory/1004-9-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/1004-18-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/3196-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/3196-20-0x0000000000630000-0x0000000000636000-memory.dmp

          Filesize

          24KB

        • memory/3196-21-0x0000000000660000-0x0000000000666000-memory.dmp

          Filesize

          24KB

        • memory/3196-27-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB