Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    29/07/2026, 22:32

General

  • Target
    2026-07-29_7cba0236efa8691b2b1369ae35f0c7e1_elex_wannacry.exe
  • Size 80KB
  • Sample260729-2f46dsfh93
  • SHA256 b358d127f18ec0ecb5103963432e1c8a9b62acf79bc28cc6fb0a5b93589d18aa
  • 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 (4264) 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\2026-07-29_7cba0236efa8691b2b1369ae35f0c7e1_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-29_7cba0236efa8691b2b1369ae35f0c7e1_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:3704

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-552508041-2681165170-3229858294-1000\desktop.ini.tmp
        • Size 80KB
        • SHA256 fb85bc3361f3e517c227fabd0398b12efe16b16b2d2e3a218b02b655ed16e99c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 179KB
        • SHA256 b95440a0e5f4e830afc9e7da5099853b5dbf3bd5ef8c1af6495b35a316b48fa0
        • MD5 SHA1 SHA512 SSDEEP TLSH