Analysis

  • max time kernel
    150s
  • max time network
    126s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    31/08/2026, 04:31

General

  • Target
    2026-08-30_c9e0c0fc599e6d1d192ae1d7eeb201ab_elex_wannacry.exe
  • Size 25KB
  • Sample260831-e5qyqsvcnd
  • SHA256 60fc27b3da84c085249043574fbc724b2b9b9fa753ea90918262d4daf67fe1ea
  • 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 (4769) 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\2026-08-30_c9e0c0fc599e6d1d192ae1d7eeb201ab_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-30_c9e0c0fc599e6d1d192ae1d7eeb201ab_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:908

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-4046655672-1449839301-2197395821-1000\desktop.ini.tmp
        • Size 25KB
        • SHA256 dad6ebcc6231434315516ae4e5480df791bcb03b79d554068237a7631355fcc1
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 124KB
        • SHA256 16e2d5a96ba5aca5bad6f1a466deca079805474688b14b32f4d98bf8dd0eb5e4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/908-0-0x0000000000400000-0x0000000000409D5C-memory.dmp

        memory/908-591-0x0000000000400000-0x0000000000409D5C-memory.dmp