Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    20/08/2026, 11:05

General

  • Target
    2026-08-20_f249bfcee5668e2843e0fab433d696e8_cryptolocker_elex.exe
  • Size 44KB
  • Sample260820-m7b7csvgkc
  • SHA256 115ae28796a98270ef9bd06225998a26c2ba9d565e68025434077d224ee539da
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 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).

  • 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\2026-08-20_f249bfcee5668e2843e0fab433d696e8_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-20_f249bfcee5668e2843e0fab433d696e8_cryptolocker_elex.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4620
    • 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:3784

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 44KB
        • SHA256 f4721cc9d8c6330299934a8e18ca5b0b19aab81b93d8f994c841fdda94be8dcf
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3784-17-0x0000000008000000-0x0000000008009000-memory.dmp

        memory/3784-20-0x00000000020D0000-0x00000000020D6000-memory.dmp

        memory/3784-19-0x0000000008000000-0x0000000008009000-memory.dmp

        memory/4620-0-0x0000000008004000-0x0000000008005000-memory.dmp

        memory/4620-1-0x0000000002120000-0x0000000002126000-memory.dmp

        memory/4620-2-0x0000000008000000-0x0000000008009000-memory.dmp

        memory/4620-3-0x0000000002040000-0x0000000002046000-memory.dmp