Overview

overview

10

Static

static

10

2026-09-16...er.exe

windows10-2004-x64

10

2026-09-16...er.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    16/09/2026, 22:37

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General

  • Target
    2026-09-16_36a7ed53f5274f83a0e770ca2df54626_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample260916-2jv2wsfb44
  • SHA256 7cf750e7d17c85ebda6fa926d92eeca6d26a45dfcb72d92e9ee54274d4a09d71
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
adwarediscoverycosmuransomwarespywareworm

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

    wormcosmu
  • Detects Cosmu payload 5 IoCs

    Cosmu is a worm written in C++.

  • Enumerates connected drives 3 TTPs 10 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
    ransomware
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 2 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
  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
    adwarespyware

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-09-16_36a7ed53f5274f83a0e770ca2df54626_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-16_36a7ed53f5274f83a0e770ca2df54626_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies Internet Explorer settings
    PID:4668

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe
        • Path C:\Program Files\7-Zip\7z.exe
        • Size 320KB
        • SHA256 a89f211c765a930bd9b87b6d9c6b0ed46ca8beed2927ea0f59a6b5b1d9481d48
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        chrmstp.exe
        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\chrmstp.exe
        • Size 1.5MB
        • SHA256 5daaaf01034685e023f8dc9b923a28dd4c215e43f957450a6d176e5d6356aaa6
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX2EF9.tmp
        • Path C:\Program Files\Google\Chrome\Application\RCX2EF9.tmp
        • Size 284KB
        • SHA256 f59bb76fea29de9ba3c165c1c9db847ab66e654fa11c95d331b587b472e24451
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        appletviewer.exe
        • Path C:\Program Files\Java\jdk-1.8\bin\appletviewer.exe
        • Size 284KB
        • SHA256 6ab20275980b15ebdc34fcd0a7dc17119c6fafb88149b66d2e7a0449a98a2f6c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        helper.exe
        • Path C:\Program Files\Mozilla Firefox\uninstall\helper.exe
        • Size 344KB
        • SHA256 ba63e0dec1ff35a1cbe2350570fd1b3cb1228fbbac1f514107e85e54a7031098
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download