Analysis

  • max time kernel
    148s
  • 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
    06/06/2024, 21:30

General

  • Target
    2024-06-06_8ad7c726133cfa37df20b996b7b3bb3f_cryptolocker.exe
  • Size 48KB
  • Sample240606-1cwt6scc4v
  • SHA256 3ee8cf5e3c2e23c969f5dc01fcdd519fd29f843eb24602ce599c5882b53de3f9
  • 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\2024-06-06_8ad7c726133cfa37df20b996b7b3bb3f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-06_8ad7c726133cfa37df20b996b7b3bb3f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3588
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1040

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        asih.exe

        • Path C:\Users\Admin\AppData\Local\Temp\asih.exe
        • Size 48KB
        • SHA256 e9847acaf9feb2314f4b21353fa77414776abad43854b5133843ac2227b6df49
        • MD5 SHA1 SHA512 SSDEEP

        memory/1040-23-0x0000000001F10000-0x0000000001F16000-memory.dmp

        memory/1040-17-0x0000000001F80000-0x0000000001F86000-memory.dmp

        memory/3588-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

        memory/3588-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

        memory/3588-2-0x00000000004F0000-0x00000000004F6000-memory.dmp