Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    25/05/2026, 14:27

General

  • Target
    2026-05-25_619ebfec39041cf80fcac9d17effefda_cryptolocker_elex.exe
  • Size 42KB
  • Sample260525-rsplcses2x
  • SHA256 82347d3b6b51d3ac9444e2c6d1c8ca23d328f5c1503b7ccad902c3c80d88d6d5
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 2 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\2026-05-25_619ebfec39041cf80fcac9d17effefda_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-25_619ebfec39041cf80fcac9d17effefda_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:816
    • C:\Users\Admin\AppData\Local\Temp\rewok.exe
      "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2812

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        rewok.exe

        • Path C:\Users\Admin\AppData\Local\Temp\rewok.exe
        • Size 43KB
        • SHA256 f3bab724a42b12aba5d27007aa66781a137bd36df0ce214723ad52d978b0d85a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/816-0-0x0000000000404000-0x0000000000405000-memory.dmp

        memory/816-1-0x0000000002310000-0x0000000002316000-memory.dmp

        memory/816-2-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/816-3-0x0000000000400000-0x0000000000406000-memory.dmp

        memory/2812-19-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/2812-21-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/2812-28-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/2812-30-0x0000000000400000-0x0000000000408000-memory.dmp