Overview

overview

10

Static

static

10

2026-10-15...er.exe

windows10-2004-x64

10

2026-10-15...er.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    16/10/2026, 22:52

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General

  • Target
    2026-10-15_1292f3059238e7868954fdc442fe69af_elex_rhadamanthys_smoke-loader.exe
  • Size 340KB
  • Sample261016-2thvbasthw
  • SHA256 1946ba1e2ab7934414318b13ce5e80d22403f1e531fcc9ad659799a892c99bdb
  • 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 4 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\2026-10-15_1292f3059238e7868954fdc442fe69af_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-15_1292f3059238e7868954fdc442fe69af_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:3108

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe
        • Path C:\Program Files\7-Zip\7z.exe
        • Size 337KB
        • SHA256 e74f0d53a7d0dd2f914ba286f733b219ea90edafd9ddcbc48497ee54fb16971b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX2356.tmp
        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX2356.tmp
        • Size 288KB
        • SHA256 84078fecb74c95781a7831ad2c0bdfaca0216295a84350ba5a3ecb0886d2cbbb
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX2357.tmp
        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX2357.tmp
        • Size 288KB
        • SHA256 be0d30861745b06e2dbf805cbe408a96a9e290402983037362ee349f536dc99a
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX2275.tmp
        • Path C:\Program Files\Google\Chrome\Application\RCX2275.tmp
        • Size 288KB
        • SHA256 3ac449a4dc9957cfb42894e25964ebdfc69665036a5e77be9eded27521bcba59
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download