Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250619-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250619-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/05/2026, 09:28

General

  • Target
    2026-05-09_003776e4e1e1da2c07394bc34e4de858_elex_upatre_wannacry.exe
  • Size 57KB
  • Sample260509-lfe89sd12s
  • SHA256 191877b435938120595bcced7e063d35007b1312befe76feddb6ff98ad0b25f3
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10

Malware Config

Signatures

  • Custom signature
    Detects executables built or packed with MPress PE compressor 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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\2026-05-09_003776e4e1e1da2c07394bc34e4de858_elex_upatre_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-09_003776e4e1e1da2c07394bc34e4de858_elex_upatre_wannacry.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1724
    • C:\Users\Admin\AppData\Local\Temp\btkba.exe
      "C:\Users\Admin\AppData\Local\Temp\btkba.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2284

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        btkba.exe

        • Path C:\Users\Admin\AppData\Local\Temp\btkba.exe
        • Size 57KB
        • SHA256 22a8fca081f9d19e1a8f59cd5010bc618ea3282162e9d3e0c731faa6e26ce0f2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1724-0-0x0000000000400000-0x000000000040C000-memory.dmp

        memory/1724-12-0x0000000000400000-0x000000000040C000-memory.dmp

        memory/2284-13-0x0000000000400000-0x000000000040C000-memory.dmp