Analysis

  • max time kernel
    150s
  • max time network
    143s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    05/09/2026, 22:25

General

  • Target
    2026-09-03_a2070e1c16778b4dbca7d933f12502df_elex_wannacry.exe
  • Size 61KB
  • Sample260905-2caglstelf
  • SHA256 d0321c50227816f4c44814dc28fe0285bd7d2d036c17c15027023c5903db3c19
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 2 IoCs

    Cosmu is a worm written in C++.

  • Renames multiple (4405) 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\2026-09-03_a2070e1c16778b4dbca7d933f12502df_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-03_a2070e1c16778b4dbca7d933f12502df_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:1240

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-1738198120-2966725515-3980530802-1000\desktop.ini.tmp
        • Size 62KB
        • SHA256 afa6e0aaf47d330c0dca1a9856cf3fee485abfb7894613a8972586115af3853a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 160KB
        • SHA256 364a7741f04270e898f13c5effda99652bfd3b5e1dd29c110a4b7a64dee2341b
        • MD5 SHA1 SHA512 SSDEEP TLSH