Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    23/10/2026, 11:17

General

  • Target
    2026-10-23_677620f10d77ea7c97b35e84cf90d66a_cryptolocker_elex.exe
  • Size 120KB
  • Sample261023-nds4fsbs8w
  • SHA256 a83cb3d923769355cb89025a206b0921b318aaaabcebd69ad2507e8cb017b148
  • MD5 SHA1 SHA512 SSDEEP TLSH
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).

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-10-23_677620f10d77ea7c97b35e84cf90d66a_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-23_677620f10d77ea7c97b35e84cf90d66a_cryptolocker_elex.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2796
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      PID:1200

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        misid.exe

        • Path C:\Users\Admin\AppData\Local\Temp\misid.exe
        • Size 120KB
        • SHA256 a359922a8bab5e38f981ba368d1f4f8ab26d35d8f0fce74b92e37a2ab8cc4e50
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1200-23-0x0000000000690000-0x0000000000696000-memory.dmp

        memory/1200-17-0x0000000000740000-0x0000000000746000-memory.dmp

        memory/2796-0-0x00000000004C0000-0x00000000004C6000-memory.dmp

        memory/2796-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

        memory/2796-3-0x00000000004E0000-0x00000000004E6000-memory.dmp