Overview

overview

10

Static

static

10

2026-08-03...er.exe

windows10-2004-x64

10

2026-08-03...er.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    147s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    04/08/2026, 02:52

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General

  • Target
    2026-08-03_5ffcf771d589e631ed2ee0ca1bffe135_elex_rhadamanthys_smoke-loader.exe
  • Size 288KB
  • Sample260804-dcymfaer2x
  • SHA256 5565fd3eceb02b11eab4a5251375312c55a3c6215c4578d2ea565dfd74a54dab
  • 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\2026-08-03_5ffcf771d589e631ed2ee0ca1bffe135_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-03_5ffcf771d589e631ed2ee0ca1bffe135_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:3200

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe
        • Path C:\Program Files\7-Zip\7z.exe
        • Size 328KB
        • SHA256 b69d144cac23b34a304bfcba559d6e6a214e37d94cf40a82f4f93b955439bfaf
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        chrome_pwa_launcher.exe
        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\chrome_pwa_launcher.exe
        • Size 1.5MB
        • SHA256 ce1c4f5be4c81888c0b28e75cb1d20285479b4609433c0296fa631b4d66f0d4e
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX4782.tmp
        • Path C:\Program Files\Google\Chrome\Application\RCX4782.tmp
        • Size 288KB
        • SHA256 4bf82a9df296646e444862c0413bc7b2a99a8c1a16a189c2f551a9c569fd965b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX4932.tmp
        • Path C:\Program Files\Java\jdk-1.8\bin\RCX4932.tmp
        • Size 288KB
        • SHA256 7db12a032c7153fd38ca9f4fa2a97c9da877b957700c0cfc5e446f4a7a4274db
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        appletviewer.exe
        • Path C:\Program Files\Java\jdk-1.8\bin\appletviewer.exe
        • Size 288KB
        • SHA256 d288d38fe37054eb1296f3ee5fc119ed0892293cc4c48cf087f5b04db6ae0fae
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download