Overview

overview

10

Static

static

10

2026-07-31...er.exe

windows10-2004-x64

10

2026-07-31...er.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    130s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    31/07/2026, 23:30

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General

  • Target
    2026-07-31_990e3171acd6b95c95ed3cc64afb8190_elex_rhadamanthys_smoke-loader.exe
  • Size 296KB
  • Sample260731-3hlbqsap4v
  • SHA256 5f9e4c2702ead0295ec654d70d76931642d89703c61559735d945c9cf5388194
  • 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\2026-07-31_990e3171acd6b95c95ed3cc64afb8190_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-31_990e3171acd6b95c95ed3cc64afb8190_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:4628

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe
        • Path C:\Program Files\7-Zip\7z.exe
        • Size 327KB
        • SHA256 4d84805274a6179038152d086660046181a251834459ddce61fb9a3ed0516d35
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCXDB5.tmp
        • Path C:\Program Files\Google\Chrome\Application\RCXDB5.tmp
        • Size 288KB
        • SHA256 62da3712d4bcc5449b22e5bf83b4232d5e66d2414ee2b4382a1c48027abcdf2f
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCXEF8.tmp
        • Path C:\Program Files\Java\jdk-1.8\bin\RCXEF8.tmp
        • Size 288KB
        • SHA256 1c1545663e10c4844189402acb069a36e97559a2a8d0bdc9e28fcc05f553a6b5
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        default-browser-agent.exe
        • Path C:\Program Files\Mozilla Firefox\default-browser-agent.exe
        • Size 288KB
        • SHA256 f16fab346a6a6dc8df2ff28b5af68aaf2d5a3cf954c666204f3920edc5711b8a
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        helper.exe
        • Path C:\Program Files\Mozilla Firefox\uninstall\helper.exe
        • Size 351KB
        • SHA256 cdf0c4ada7df2d2a435015d93bc96292cfbf27edbb48026c67097b7ca5865c6c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download