Analysis

  • max time kernel
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    01/07/2026, 18:37

General

  • Target
    2026-07-01_b54fd451cf32a5c01dac3e3ab83a9a3e_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample260701-w9ff8sd19t
  • SHA256 dd3fae275246c482a06a95c1b68674c47f8406693e76ace654d6ed209197602f
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 6 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.

  • 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\2026-07-01_b54fd451cf32a5c01dac3e3ab83a9a3e_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-01_b54fd451cf32a5c01dac3e3ab83a9a3e_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:4308

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 321KB
        • SHA256 50380c43182d54ab5fd4056066c9bd93a3081caf99b80fb18a560d145c0f657f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        setup.exe

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\setup.exe
        • Size 284KB
        • SHA256 7f73c4a5c3daf1859de927c930875e3d37df2a87350939054f24e2ee53aeb36c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        chrome_pwa_launcher.exe

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\chrome_pwa_launcher.exe
        • Size 1.5MB
        • SHA256 997dec2ad055d99fe19452e9aff4c123db9edc4b34853cefaed3792aac1ee2d3
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX7F12.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCX7F12.tmp
        • Size 284KB
        • SHA256 b17108989f76a83507af7be2c89ada307f00a9711ae549ef7f6eff71dffaf8a5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        appletviewer.exe

        • Path C:\Program Files\Java\jdk-1.8\bin\appletviewer.exe
        • Size 284KB
        • SHA256 d6f2d29b5b0c5e762e6ac4479bbdfd1c8ca860b7eb609ccc161cc59358f8a814
        • MD5 SHA1 SHA512 SSDEEP TLSH

        default-browser-agent.exe

        • Path C:\Program Files\Mozilla Firefox\default-browser-agent.exe
        • Size 284KB
        • SHA256 61b61abaede9d97f35d96448295ae4bb3a7d4a587506e4cff2e280d5b951f604
        • MD5 SHA1 SHA512 SSDEEP TLSH