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Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/01/2024, 00:41

General

  • Target

    2024-01-26_c05c19b2560394cce4d41e33dc78fee5_cryptolocker.exe

  • Size

    30KB

  • MD5

    c05c19b2560394cce4d41e33dc78fee5

  • SHA1

    fb0b48b1c3b6eff54ebf00ddf2512cab4a9f6ed7

  • SHA256

    ed44f394d8e94aafd5549e8d21ae6ceeece949a82688c0dc02d732615de87f47

  • SHA512

    57e8242a1dbca305cb2bb4080f62ddbc50196793db63e1a6855402250f6ae1a9263725418de3a0d1ce2c74caa226bea8135b48117777ed7bc2cf669e6f1f397d

  • SSDEEP

    384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUgIunIyNl:bA74zYcgT/Ekd0ryfjPIunt/

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\2024-01-26_c05c19b2560394cce4d41e33dc78fee5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-26_c05c19b2560394cce4d41e33dc78fee5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5800
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:208

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    31KB

    MD5

    f4cf5a117a60049aea9ce6f99a818dde

    SHA1

    03647d6279dcec70a821e3d4c529c862f74e5e29

    SHA256

    9f3fb3f19a8b65133064078d9820370005978bab3ba98a4bb7cdc5d7a73f9fb1

    SHA512

    876619bf9732bea40742858a83f91dc279276ecbec34adf44418c66bcdaa629e4663692da33a1cb66ee8fbd5ad9b73ddc1606999e98bb6ad06eda94d7bf3134e

  • memory/208-17-0x00000000020D0000-0x00000000020D6000-memory.dmp

    Filesize

    24KB

  • memory/208-19-0x0000000001F90000-0x0000000001F96000-memory.dmp

    Filesize

    24KB

  • memory/5800-0-0x0000000002240000-0x0000000002246000-memory.dmp

    Filesize

    24KB

  • memory/5800-2-0x0000000002270000-0x0000000002276000-memory.dmp

    Filesize

    24KB

  • memory/5800-1-0x0000000002240000-0x0000000002246000-memory.dmp

    Filesize

    24KB