Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    26/04/2026, 03:29

General

  • Target
    2026-04-26_42a45eb5833cc271088c785dbb4df782_cryptolocker_elex.exe
  • Size 61KB
  • Sample260426-d2dnkaex2r
  • SHA256 7083a3d1feb3c9058c6547d6a584c7dd08459d72dfbba7ce2a5c63273042ce25
  • 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\2026-04-26_42a45eb5833cc271088c785dbb4df782_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-26_42a45eb5833cc271088c785dbb4df782_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1104
    • 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:2408

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 61KB
        • SHA256 9fc59a5b7b59f27330e62fd9a26ead687ed3232bb6f6b1dfac1baee5727dde06
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1104-0-0x0000000000404000-0x0000000000405000-memory.dmp

        memory/1104-1-0x00000000021F0000-0x00000000021F6000-memory.dmp

        memory/1104-2-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/1104-3-0x0000000000400000-0x0000000000406000-memory.dmp

        memory/1104-19-0x00000000034C0000-0x000000000353C000-memory.dmp

        memory/2408-20-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/2408-28-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/2408-29-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/2408-32-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/2408-31-0x0000000002FA0000-0x000000000301C000-memory.dmp

        memory/2408-56-0x0000000002FA0000-0x000000000301C000-memory.dmp