Analysis

  • max time kernel
    150s
  • max time network
    124s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    24/10/2026, 22:57

General

  • Target
    2026-10-22_045301a8b0166221520cf0e9a0a7c431_elex_wannacry.exe
  • Size 980KB
  • Sample261024-2xdprsew7p
  • SHA256 d6b922a1d0a6eda6920e0a5d6dc478cfffef1cbe7b6c042721b3c375ac1c8cc2
  • 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 (1832) 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\2026-10-22_045301a8b0166221520cf0e9a0a7c431_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-22_045301a8b0166221520cf0e9a0a7c431_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:5136

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-2304238888-3968896904-642854331-1000\desktop.ini.tmp
        • Size 980KB
        • SHA256 ebc0c3cd3e9f21b94cdef17940a148f2fc678e8ee2b6ffce5213befe3d1bb9a0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.chm.tmp

        • Path C:\Program Files\7-Zip\7-zip.chm.tmp
        • Size 1.1MB
        • SHA256 a5c0121f7e965404ea92a347014623430e0f2f1226a737a5aba63095b71dfda6
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/5136-0-0x0000000000400000-0x000000000040A000-memory.dmp

        memory/5136-458-0x0000000000400000-0x000000000040A000-memory.dmp