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
    23/05/2026, 10:32

General

  • Target
    2026-05-23_b42f7107b5d3e9cac92fb1bb4e6cbe4f_cryptolocker_elex.exe
  • Size 46KB
  • Sample260523-mlafmsax9x
  • SHA256 01c0fa555ef7e98f808d9ced479a365788db5ee7493135f108f5612e5b824cf3
  • 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\2026-05-23_b42f7107b5d3e9cac92fb1bb4e6cbe4f_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-23_b42f7107b5d3e9cac92fb1bb4e6cbe4f_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:428
    • 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:656

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 46KB
        • SHA256 9922436ff8bff7aa325a8ac753cae5ef571ef565b80bf3e74cd25daff31e061b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/428-0-0x0000000000404000-0x0000000000405000-memory.dmp

        memory/428-1-0x0000000002310000-0x0000000002316000-memory.dmp

        memory/428-2-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/428-3-0x0000000000400000-0x0000000000406000-memory.dmp

        memory/656-19-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/656-27-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/656-28-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/656-30-0x0000000000400000-0x0000000000408000-memory.dmp