Analysis

  • max time kernel
    149s
  • max time network
    141s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    02/08/2026, 03:58

General

  • Target
    2026-08-01_bd9d0298cf27995b75d0c1a4bc7830bc_elex_wannacry.exe
  • Size 25KB
  • Sample260802-ejvpsscr2x
  • SHA256 77f5fbded61fb0224bef09cfab1b2e2f562fcba384d4c46a9700a4f064faf5fe
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 4 IoCs

    Cosmu is a worm written in C++.

  • Detects executables packed with eXPressor 4 IoCs
  • Renames multiple (5120) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Drops file in Program Files directory 64 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-01_bd9d0298cf27995b75d0c1a4bc7830bc_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-01_bd9d0298cf27995b75d0c1a4bc7830bc_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:2028

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-2370214745-1838013427-2987045292-1000\desktop.ini.tmp
        • Size 25KB
        • SHA256 a5fa1db9e4e164ec7ad3802cadf88b524245875e6ab30a63abaf63a952fccac2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 124KB
        • SHA256 76426f1355a98f44b47e60b442f28fde25033e0c9b85711b66c585796196cf8d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2028-0-0x0000000000400000-0x000000000040A000-memory.dmp

        memory/2028-539-0x0000000000400000-0x000000000040A000-memory.dmp