Analysis

  • max time kernel
    150s
  • 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
    13/06/2024, 09:23

General

  • Target
    2024-06-13_64c7d3fd185adc028a8d18d642dc1969_cryptolocker.exe
  • Size 46KB
  • Sample240613-lcvvjssfmc
  • SHA256 495eb9fdf200301caae989724f0cbd213ee18de4feff87db1cd4d1e60b4dae25
  • MD5 SHA1 SHA512 SSDEEP
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\2024-06-13_64c7d3fd185adc028a8d18d642dc1969_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-13_64c7d3fd185adc028a8d18d642dc1969_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4220
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2024

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        asih.exe

        • Path C:\Users\Admin\AppData\Local\Temp\asih.exe
        • Size 47KB
        • SHA256 7dcf7b06733b03e70b65b3bf7b6e0f249b058635f14ded25772279c69c599732
        • MD5 SHA1 SHA512 SSDEEP

        memory/2024-23-0x0000000002050000-0x0000000002056000-memory.dmp

        memory/4220-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

        memory/4220-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

        memory/4220-2-0x0000000002070000-0x0000000002076000-memory.dmp