Overview

overview

10

Static

static

10

2026-08-23...ry.exe

windows10-2004-x64

10

2026-08-23...ry.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    127s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    24/08/2026, 01:29

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General

  • Target
    2026-08-23_af243a90bb67bd8c248f5d59e46cd1e5_cobalt-strike_elex_wannacry.exe
  • Size 3.6MB
  • Sample260824-bwdehasanc
  • SHA256 d42ac1d0d8a9c4852f6b6540d834402b98c3c74495f9d420442814e49dd25f98
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
discoverycosmuransomwareworm

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

    wormcosmu
  • Detects Cosmu payload 4 IoCs

    Cosmu is a worm written in C++.

  • Renames multiple (571) files with added filename extension

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

    ransomware
  • 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.

    discovery

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-23_af243a90bb67bd8c248f5d59e46cd1e5_cobalt-strike_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-23_af243a90bb67bd8c248f5d59e46cd1e5_cobalt-strike_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:1996

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 3.6MB
        • SHA256 2a07cd2ac57b32ff96b705287af96bc0c8f2678e84f6bbacc019b143ba622ea4
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        7-zip.dll.tmp
        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 3.7MB
        • SHA256 a207d521777fd6a65b455cf19f43262c2b248891727d1739bbcdd0f9bbd2b0a3
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/1996-0-0x0000000000400000-0x0000000000407000-memory.dmp
        Download

        memory/1996-110-0x0000000000400000-0x0000000000407000-memory.dmp
        Download