Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    18/04/2026, 07:28

General

  • Target
    2026-04-18_204e68b504d5e3aae134422cfe12fb90_cryptolocker_elex.exe
  • Size 40KB
  • Sample260418-jay33saw2y
  • SHA256 63363d3a26eb3aaff8699f7883962cd2afb38fb6607bad04d63c30e9a2b2ffd3
  • 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\2026-04-18_204e68b504d5e3aae134422cfe12fb90_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-18_204e68b504d5e3aae134422cfe12fb90_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5112
    • 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:1556

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 40KB
        • SHA256 c0eab215d810ac2bb3e2787bab20c1f0be1a9ce6dfde92b243fd79925a96a136
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1556-19-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/1556-21-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/1556-28-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/5112-0-0x0000000000404000-0x0000000000405000-memory.dmp

        memory/5112-1-0x00000000006E0000-0x00000000006E6000-memory.dmp

        memory/5112-2-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/5112-3-0x0000000000400000-0x0000000000406000-memory.dmp