Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-02-2024 23:01

General

  • Target

    2024-02-18_a0f0e2e21bd2938e944c07399c51b5b5_cryptolocker.exe

  • Size

    40KB

  • MD5

    a0f0e2e21bd2938e944c07399c51b5b5

  • SHA1

    e78c56a9befb7c15c761a0596887eb07317f064c

  • SHA256

    b8ebc72dfbec42de65777e98a57c8e0c637526a44f62303e847c6dba548599e6

  • SHA512

    62fa19cde2c75e71683cf84714de99cad4d91b270fd54ff39dfe4e9a299d0dfdbd826b5ddb7f7c6f7e7c80efbf22be5c6db209301306db6957787b758c0fc000

  • SSDEEP

    768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRrN:m5nkFNMOtEvwDpjG8hhXT

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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\2024-02-18_a0f0e2e21bd2938e944c07399c51b5b5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-18_a0f0e2e21bd2938e944c07399c51b5b5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2532
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2172

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    93b5e575710b0da6da11c7467214e2d9

    SHA1

    53933c4449286b1b8b49be679fc7b2acf86f5053

    SHA256

    b24ee8a6d79c1ab8bd5c1ee04445e53049ec39ca1ab4fa1482f9e9f9b5889766

    SHA512

    b66175e2d723dd62fcdcb0080b35dba20641bedaf5c01753a6744d4912a55111c73b4315ec66b0e6ee683a123de4727857b20020634c28e576310749ef574fb5

  • memory/2172-20-0x0000000000670000-0x0000000000676000-memory.dmp

    Filesize

    24KB

  • memory/2172-19-0x0000000000690000-0x0000000000696000-memory.dmp

    Filesize

    24KB

  • memory/2172-26-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2532-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2532-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/2532-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/2532-3-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/2532-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB