Analysis

  • max time kernel
    148s
  • max time network
    134s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    21/08/2026, 04:08

General

  • Target
    2026-08-21_9f37336a8f65eeea6774e609d796e131_elex_wannacry.exe
  • Size 86KB
  • Sample260821-ep85daseph
  • SHA256 a496ea521a5168cdcaf7c6af268e8b4fab03e92a32e0b683b79a52d53ff4446b
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Creates a file in the Startup directory 1 TTPs 1 IoCs

    A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

  • Executes dropped EXE 2 IoCs
  • Drops file in System32 directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Executes a command shell one-liner 1 TTPs 2 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies Control Panel 1 IoCs
  • Modifies registry class 28 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-21_9f37336a8f65eeea6774e609d796e131_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-21_9f37336a8f65eeea6774e609d796e131_elex_wannacry.exe"
    1⤵
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:6128
    • C:\Windows\temp\sqlserver.exe
      "C:\Windows\temp\sqlserver.exe"
      2⤵
      • Creates a file in the Startup directory
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      PID:3684
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Windows\temp\tttdelzzz.bat" "
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:2424
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Windows\temp\tttbrozzz.bat" "
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4268
      • C:\Users\Admin\AppData\Local\Temp\2026-08-21_9f37336a8f65eeea6774e609d796e131_elex_wannacry.exe
        "C:\Users\Admin\AppData\Local\Temp\2026-08-21_9f37336a8f65eeea6774e609d796e131_elex_wannacry.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Modifies Control Panel
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        PID:1672

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        sqlserver.exe

        • Path C:\Windows\Temp\sqlserver.exe
        • Size 15KB
        • SHA256 23fea8b183632f91e5a4d1d6a43283846c734eee820eb2084ad428b7cbe92d53
        • MD5 SHA1 SHA512 SSDEEP TLSH

        tttbrozzz.bat

        • Path C:\Windows\Temp\tttbrozzz.bat
        • Size 582B
        • SHA256 19ed12aa5c2b63180bc1317898cf624988d8b13d371fe14d7f138de9644f24f8
        • MD5 SHA1 SHA512 TLSH

        tttdelzzz.bat

        • Path C:\Windows\Temp\tttdelzzz.bat
        • Size 313B
        • SHA256 4f1b8b27455b9be02777dd310e053a475a74ba419381bb1b4ffec370d76a6df6
        • MD5 SHA1 SHA512 TLSH

        Server32History.dat

        • Path C:\Windows\temp\Server32History.dat
        • Size 31KB
        • SHA256 286c0b7174abce723891f63f20423b6fef6e367a36ead79ddcf83e6bb11aadfa
        • MD5 SHA1 SHA512 SSDEEP TLSH