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
    02/06/2024, 04:47

General

  • Target

    2024-06-02_d29f3177ae2b2e7d6b186d7c7ac8d06b_cryptolocker.exe

  • Size

    49KB

  • MD5

    d29f3177ae2b2e7d6b186d7c7ac8d06b

  • SHA1

    c58be2f92dd3de1aa14a446497f2c0d2d0c787b8

  • SHA256

    c4bd9d42ca929f3c732aaf18d26c55b381de1a4d08feb1dac35e97a1485d611e

  • SHA512

    3b09ed2123a7779c6857c2a917064e9c3b4c30bcd717e75fd46e0d65890524bf43a760a910460e682cbb2779efee049b186cfc2b04595373c5cae6e6be61a21c

  • SSDEEP

    768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vdXfy:X6QFElP6n+gJBMOtEvwDpjBtEdXfy

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 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\2024-06-02_d29f3177ae2b2e7d6b186d7c7ac8d06b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-02_d29f3177ae2b2e7d6b186d7c7ac8d06b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4900
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:732

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          50KB

          MD5

          a852dcd6d411822d80834909187d88cb

          SHA1

          a6fbcb999b108757b2a81751260cad20e5629c53

          SHA256

          9970d30c31fa2071f03f2304b5663673cd1751f9a8ae1a97f49b08e8c844d857

          SHA512

          20df9a873d5693e764acbc633ecd2af19a4f762b7d0647d51e5e44cacb8e63d53b0be21002dbdbcba00bdf2759d05bdc572ab6651d066b6d2eccf460f70e7b1c

        • memory/732-18-0x00000000020F0000-0x00000000020F6000-memory.dmp

          Filesize

          24KB

        • memory/732-23-0x0000000000630000-0x0000000000636000-memory.dmp

          Filesize

          24KB

        • memory/4900-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4900-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/4900-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB