Analysis

  • max time kernel
    94s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/06/2024, 09:11

General

  • Target
    2024-06-08_d86c658f22726be1197cfb284ff01227_cryptolocker.exe
  • Size 68KB
  • Sample240608-k536ysbe83
  • SHA256 aab76a46e578c5ff6e7e093e79e060b16de21f8f250384bf8ba99db66c4c3c30
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 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).

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-08_d86c658f22726be1197cfb284ff01227_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-08_d86c658f22726be1197cfb284ff01227_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2916
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:3008

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        misid.exe

        • Path C:\Users\Admin\AppData\Local\Temp\misid.exe
        • Size 68KB
        • SHA256 f59ff00832116e8ac9337d6d6615e5df8bae9c45f1a0f3d50dd5eef1f1bdd0b1
        • MD5 SHA1 SHA512 SSDEEP

        misids.exe

        • Path C:\Users\Admin\AppData\Local\Temp\misids.exe
        • Size 315B
        • SHA256 d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3
        • MD5 SHA1 SHA512

        memory/2916-0-0x0000000000500000-0x000000000050F000-memory.dmp

        memory/2916-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

        memory/2916-2-0x0000000000860000-0x0000000000866000-memory.dmp

        memory/2916-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

        memory/2916-25-0x0000000000500000-0x000000000050F000-memory.dmp

        memory/3008-17-0x0000000000500000-0x000000000050F000-memory.dmp

        memory/3008-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

        memory/3008-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

        memory/3008-49-0x0000000000500000-0x000000000050F000-memory.dmp