Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    26/05/2024, 03:53

General

  • Target
    2024-05-26_bf3fb6d400a4d92aa174857933360e0b_cryptolocker.exe
  • Size 57KB
  • Sample240526-ef3k8sea21
  • SHA256 b80414f9014d0ceff4ee4f14c433797fba637c0b7984ccd7d6a507da9287f2a8
  • MD5 SHA1 SHA512 SSDEEP
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-26_bf3fb6d400a4d92aa174857933360e0b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-26_bf3fb6d400a4d92aa174857933360e0b_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:3056
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2972

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        misid.exe

        • Path \Users\Admin\AppData\Local\Temp\misid.exe
        • Size 58KB
        • SHA256 e7c56123650f81a5d57df692af3020b669fe8b6359a53d1f3bd2769939bff85d
        • MD5 SHA1 SHA512 SSDEEP

        memory/2972-17-0x0000000000470000-0x0000000000476000-memory.dmp

        memory/2972-24-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/3056-1-0x0000000000240000-0x0000000000246000-memory.dmp

        memory/3056-0-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/3056-2-0x0000000000280000-0x0000000000286000-memory.dmp

        memory/3056-7-0x0000000000240000-0x0000000000246000-memory.dmp

        memory/3056-15-0x0000000000500000-0x0000000000510000-memory.dmp