Overview

overview

10

Static

static

10

2026-07-04...er.exe

windows10-2004-x64

10

2026-07-04...er.exe

windows11-ltsc_2024-x64

10

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
    04/07/2026, 02:04

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General

  • Target
    2026-07-04_8c99899d387e47c2dce8e9bf46c8fc53_elex_rhadamanthys_smoke-loader.exe
  • Size 292KB
  • Sample260704-chmxfsas91
  • SHA256 bec490e5c372043782d5c8b0240e450c3b835ee7b4d6ac7cc9c85de92b67581b
  • 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\2026-07-04_8c99899d387e47c2dce8e9bf46c8fc53_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-04_8c99899d387e47c2dce8e9bf46c8fc53_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:2580

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe
        • Path C:\Program Files\7-Zip\7z.exe
        • Size 335KB
        • SHA256 6f4c0ea56d1d650b0818ddb135ab6aa15fdd01d4e7c6b70e9e3006a933aa827d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX59D2.tmp
        • Path C:\Program Files\Google\Chrome\Application\RCX59D2.tmp
        • Size 284KB
        • SHA256 14a5d217d2f290b3a744ba434beac4921c5f514ae346dc776aa22ec698139fef
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        chrome.exe
        • Path C:\Program Files\Google\Chrome\Application\chrome.exe
        • Size 1.5MB
        • SHA256 70c4b38734b9d33c68fd984d4242a6709290c408cf6c374149fc6dd09903c064
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX5AE6.tmp
        • Path C:\Program Files\Java\jdk-1.8\bin\RCX5AE6.tmp
        • Size 284KB
        • SHA256 d1665c03559562ed20c50f818b5f1b96df5b1f8eab502f5555e1b0db06ad36d9
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        crashreporter.exe
        • Path C:\Program Files\Mozilla Firefox\crashreporter.exe
        • Size 1.5MB
        • SHA256 809e08d655d7a76e8502da56f95dea3a61843f484f6149c463791a5255e568ca
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download