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
    24/04/2026, 09:47

General

  • Target
    2026-04-24_2b0920e19a193a871eb8821b84c3474f_cryptolocker_elex.exe
  • Size 39KB
  • Sample260424-lsf2bset4x
  • SHA256 60550df7de5380c83c78a13e3a5930ae894d4ac3db51daee792d5064a812cbb8
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • 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\2026-04-24_2b0920e19a193a871eb8821b84c3474f_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-24_2b0920e19a193a871eb8821b84c3474f_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1120
    • 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:4848

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 888dc9387faf4784f42b78c598a76c22888e069955ba5833455f5d58a9028cf9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1120-0-0x0000000000404000-0x0000000000405000-memory.dmp

        memory/1120-1-0x00000000022F0000-0x00000000022F6000-memory.dmp

        memory/1120-2-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/1120-3-0x0000000000400000-0x0000000000406000-memory.dmp

        memory/4848-19-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/4848-21-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/4848-28-0x0000000000400000-0x0000000000408000-memory.dmp