Overview

overview

7

Static

static

3

2026-08-23...ry.exe

windows10-2004-x64

7

2026-08-23...ry.exe

windows11-ltsc_2024-x64

7

Analysis

  • max time kernel
    148s
  • max time network
    145s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    24/08/2026, 04:25

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General

  • Target
    2026-08-23_98590b51cbe9ced7c3fb529db4bd6607_elex_wannacry.exe
  • Size 649KB
  • Sample260824-e2f95acp3v
  • SHA256 e1439bf2ff7d43c41bd7d1cf878cd213e0799c03d7fadd9a8797b0915e34df86
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
discoveryexecutionpersistenceprivilege_escalation

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.

    persistenceprivilege_escalation
  • Executes dropped EXE 4 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • 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 3 IoCs

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

    execution
  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

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

    discovery
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies registry class 44 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-23_98590b51cbe9ced7c3fb529db4bd6607_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-23_98590b51cbe9ced7c3fb529db4bd6607_elex_wannacry.exe"
    1⤵
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1756
    • 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:4896
    • 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:4200
    • 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:5076
      • C:\Users\Admin\AppData\Local\Temp\2026-08-23_98590b51cbe9ced7c3fb529db4bd6607_elex_wannacry.exe
        "C:\Users\Admin\AppData\Local\Temp\2026-08-23_98590b51cbe9ced7c3fb529db4bd6607_elex_wannacry.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        PID:5420
      • C:\Windows\SysWOW64\dumpkernel.exe
        "C:\Windows\system32\dumpkernel.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2000
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c reg add HKEY_LOCAL_MACHINE\Software\Microsoft\windows\currentVersion\run /v kernelfaultEx /t REG_SZ /d "C:\Windows\SysWOW64\dumpkernel.exe" /f
          4⤵
          • Executes a command shell one-liner
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2080
          • C:\Windows\SysWOW64\reg.exe
            reg add HKEY_LOCAL_MACHINE\Software\Microsoft\windows\currentVersion\run /v kernelfaultEx /t REG_SZ /d "C:\Windows\SysWOW64\dumpkernel.exe" /f
            5⤵
            • Adds Run key to start application
            • System Location Discovery: System Language Discovery
            PID:4136
  • C:\Windows\SysWOW64\dumpkernel.exe
    C:\Windows\SysWOW64\dumpkernel.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:5576

Network

        MITRE ATT&CK Enterprise v16

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        Downloads

        dumpkernel.exe
        • Path C:\Windows\SysWOW64\dumpkernel.exe
        • Size 44KB
        • SHA256 df8f53cbad3419414034d930d372356a490a90013587ef9a11666eda19842f16
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

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

        tttbrozzz.bat
        • Path C:\Windows\Temp\tttbrozzz.bat
        • Size 582B
        • SHA256 040bf5d8c94d0f24f029f3b3c3d180c4fbc5747dac4832e53929ab60714277b5
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        tttdelzzz.bat
        • Path C:\Windows\Temp\tttdelzzz.bat
        • Size 313B
        • SHA256 95fe6a261b801442537489cc42aff4a1a1bc02a47e2fd3d58e82b2fa56b744aa
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        Server32History.dat
        • Path C:\Windows\temp\Server32History.dat
        • Size 599KB
        • SHA256 b22b2c9cfa096905aaefea82c1494d24e8f9306c8692280e218075a0d3f6e5c5
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download