Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    15/04/2026, 04:38

General

  • Target
    2026-04-15_981bbb459d9b7d20b656af7ff784730e_cryptolocker_elex.exe
  • Size 81KB
  • Sample260415-e9pw8sas5t
  • SHA256 bb080bb5af920572be4efeebccd6a4723b4ccc8b48dc366b9fed20e60faa139f
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 6 IoCs
  • Detection of Cryptolocker Samples 6 IoCs
  • Detects executables built or packed with MPress PE compressor 6 IoCs
  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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\2026-04-15_981bbb459d9b7d20b656af7ff784730e_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-15_981bbb459d9b7d20b656af7ff784730e_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1544
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4640

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 81KB
        • SHA256 1006018026347c853ee323217cb63c62ad80b8fd6d6f5b13feba5ed04c68d222
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1544-0-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/1544-1-0x0000000000504000-0x0000000000505000-memory.dmp

        memory/1544-2-0x0000000002150000-0x0000000002156000-memory.dmp

        memory/1544-3-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/1544-4-0x0000000002170000-0x0000000002176000-memory.dmp

        memory/4640-17-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/4640-19-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/4640-27-0x0000000000500000-0x0000000000510000-memory.dmp

        memory/4640-28-0x0000000002390000-0x00000000023F4000-memory.dmp

        memory/4640-29-0x0000000002390000-0x00000000023F4000-memory.dmp