Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    28/05/2026, 08:31

General

  • Target
    2026-05-28_35a92b32435545b54a51c396dd80a065_cryptolocker_elex.exe
  • Size 70KB
  • Sample260528-key5bact4z
  • SHA256 c126a668dc96f0f584ca0bf263b1a3acb3c7ba763b3163e2ec51bff01cf41ae0
  • 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\2026-05-28_35a92b32435545b54a51c396dd80a065_cryptolocker_elex.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-28_35a92b32435545b54a51c396dd80a065_cryptolocker_elex.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3624
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3212

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        hasfj.exe

        • Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
        • Size 70KB
        • SHA256 5da1d061c5aefdfdc40a3a7bcf803c6c5f8dfc945c5058f8f193a8f08845798d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3212-17-0x0000000008000000-0x000000000800E000-memory.dmp

        memory/3212-19-0x0000000008000000-0x000000000800E000-memory.dmp

        memory/3624-0-0x0000000008004000-0x0000000008005000-memory.dmp

        memory/3624-1-0x0000000002E60000-0x0000000002E66000-memory.dmp

        memory/3624-2-0x0000000008000000-0x000000000800E000-memory.dmp

        memory/3624-3-0x0000000003110000-0x0000000003116000-memory.dmp