Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    24/08/2026, 12:18

General

  • Target
    2026-08-23_4c8292b28cd933a9f7ce8a831b25ec99_cryptolocker_elex.exe
  • Size 28KB
  • Sample260824-pgzabaxejf
  • SHA256 4a6359d22fde5f566652b2cea6f2589b64ad0065459c8dd0533ad5d78f37eb2c
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 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\2026-08-23_4c8292b28cd933a9f7ce8a831b25ec99_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-23_4c8292b28cd933a9f7ce8a831b25ec99_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4636
    • C:\Users\Admin\AppData\Local\Temp\lossy.exe
      "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4852

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        lossy.exe

        • Path C:\Users\Admin\AppData\Local\Temp\lossy.exe
        • Size 28KB
        • SHA256 1b0449c0c96e23ccca13a74833e795e3891f5722b96f8cf6bcf4e197429f5743
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/4636-0-0x0000000008004000-0x0000000008005000-memory.dmp

        memory/4636-1-0x00000000020A0000-0x00000000020A6000-memory.dmp

        memory/4636-3-0x00000000020C0000-0x00000000020C6000-memory.dmp

        memory/4636-2-0x0000000008000000-0x0000000008009000-memory.dmp

        memory/4852-21-0x0000000002150000-0x0000000002156000-memory.dmp

        memory/4852-20-0x0000000008000000-0x0000000008009000-memory.dmp

        memory/4852-19-0x0000000008000000-0x0000000008009000-memory.dmp