Analysis

  • max time kernel
    149s
  • max time network
    125s
  • 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, 07:29

General

  • Target
    2026-06-01_8872255b14316b55fab2799849d55e9b_cryptolocker_elex.exe
  • Size 40KB
  • Sample260601-jbcapsex8s
  • SHA256 ab85b8b31f1b97c30b3d9ea5a505f46c202db75b1bc8dad123058341f037b090
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Custom signature
    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\2026-06-01_8872255b14316b55fab2799849d55e9b_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-06-01_8872255b14316b55fab2799849d55e9b_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2984
    • C:\Users\Admin\AppData\Local\Temp\gewos.exe
      "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2508

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        gewos.exe

        • Path C:\Users\Admin\AppData\Local\Temp\gewos.exe
        • Size 41KB
        • SHA256 963dbdb3d5bbff9bbe11a26fc1b8a36222980f4886d9f0046e87bfe4606c3fa2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        gewosik.exe

        • Path C:\Users\Admin\AppData\Local\Temp\gewosik.exe
        • Size 184B
        • SHA256 849b1d83457eb210e3f4502416cce50b5dc447d74ea9a4aa3796e5a3b07678ee
        • MD5 SHA1 SHA512 TLSH

        memory/2508-19-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/2508-27-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/2984-0-0x0000000000404000-0x0000000000405000-memory.dmp

        memory/2984-1-0x0000000002E60000-0x0000000002E66000-memory.dmp

        memory/2984-2-0x0000000000400000-0x0000000000408000-memory.dmp

        memory/2984-3-0x0000000000400000-0x0000000000406000-memory.dmp