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
    01/06/2026, 08:24

General

  • Target
    2026-06-01_09933669f9a1281ffe4131548e75f7dc_cryptolocker_elex.exe
  • Size 62KB
  • Sample260601-kax2fsft4w
  • SHA256 8adf3bd96c8506b44b4c7eebec82c4f1468671b26414c05526c55cd322d50780
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Custom signature
    Detection of CryptoLocker Variants 3 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\2026-06-01_09933669f9a1281ffe4131548e75f7dc_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-06-01_09933669f9a1281ffe4131548e75f7dc_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2760
    • 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:3376

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        rewok.exe

        • Path C:\Users\Admin\AppData\Local\Temp\rewok.exe
        • Size 62KB
        • SHA256 debbec6899f4e347ae7d4dc723b7b4e832a08801defc24a986597079491aa255
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2760-0-0x0000000000404000-0x0000000000405000-memory.dmp

        memory/2760-1-0x00000000006F0000-0x00000000006F6000-memory.dmp

        memory/2760-2-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/2760-3-0x0000000000400000-0x0000000000406000-memory.dmp

        memory/3376-19-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/3376-27-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/3376-28-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/3376-30-0x0000000000400000-0x0000000000408000-memory.dmp