Analysis

  • max time kernel
    150s
  • max time network
    124s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/11/2026, 02:52

General

  • Target
    2026-11-01_f5eecd9c631f770c7b1a7c8053fa6da5_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample261102-dc6ytaev7v
  • SHA256 0bf7ea4c5695ff8de5619f0c6252f85129dcc0c25038e5c1e522802d8715a5ef
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 8 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
  • 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.

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-11-01_f5eecd9c631f770c7b1a7c8053fa6da5_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-11-01_f5eecd9c631f770c7b1a7c8053fa6da5_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:2452

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        7z.exe

        • Path C:\Program Files\7-Zip\7z.exe
        • Size 322KB
        • SHA256 1e29de5f8b179a03a68d0f490d92c9d4a3ce92a3d191c3a7839a9b5f6a7d574c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        AppVShNotify.exe

        • Path C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVShNotify.exe
        • Size 284KB
        • SHA256 a0ba7575a5d8582d3af9b3ea09ad82546cc946f9789a002cf3a5e2b236565896
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX43AF.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX43AF.tmp
        • Size 284KB
        • SHA256 4052de01a254170001a8dec4dc8066d0d610f4a526ba4a2ac754871644ba4808
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX43B0.tmp

        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\RCX43B0.tmp
        • Size 284KB
        • SHA256 c740c8451a0e0eeb3ad29f1a9994c02a527edc0debf868f12fa934fd9fb827b2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RCX42DE.tmp

        • Path C:\Program Files\Google\Chrome\Application\RCX42DE.tmp
        • Size 284KB
        • SHA256 2a30fd729c2abfe86e4c62ecc97f758050086f37312a38dfb6bb1450419a65b1
        • MD5 SHA1 SHA512 SSDEEP TLSH

        chrome_proxy.exe

        • Path C:\Program Files\Google\Chrome\Application\chrome_proxy.exe
        • Size 322KB
        • SHA256 b4903340ea949b58436ef2bb0cffc9517098d6351b2d844177ecd074f1036c78
        • MD5 SHA1 SHA512 SSDEEP TLSH

        crashreporter.exe

        • Path C:\Program Files\Mozilla Firefox\crashreporter.exe
        • Size 1.5MB
        • SHA256 e8d632095fdcb743026000b59b1135fb6ffbea7696c830f714e27fc746893903
        • MD5 SHA1 SHA512 SSDEEP TLSH

        helper.exe

        • Path C:\Program Files\Mozilla Firefox\uninstall\helper.exe
        • Size 322KB
        • SHA256 932285fbe3099420761bc7a92d0f4e31544a27751baa25730327481ab159d5a8
        • MD5 SHA1 SHA512 SSDEEP TLSH