Overview

overview

10

Static

static

10

2026-08-21...er.exe

windows10-2004-x64

10

2026-08-21...er.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    146s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    22/08/2026, 00:59

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General

  • Target
    2026-08-21_dc68ac5cb217f625c59bcc00550aa15c_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample260822-bcbfsszeka
  • SHA256 167e70814ee69e3ae4ab39e199ece9456d6c8e3fd9751179bff44a6c356440d6
  • 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 4 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\2026-08-21_dc68ac5cb217f625c59bcc00550aa15c_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-21_dc68ac5cb217f625c59bcc00550aa15c_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:3956

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe
        • Path C:\Program Files\7-Zip\7z.exe
        • Size 334KB
        • SHA256 6d5741aed29ad00a0a4f064ce7ef681271373260f25808320762b6c931e4d184
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCXE6E4.tmp
        • Path C:\Program Files\Google\Chrome\Application\RCXE6E4.tmp
        • Size 284KB
        • SHA256 e995e26e7bbf0ff389304e74357dcec2421ef0f350188fcfe9047d84b6b96f63
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCXE856.tmp
        • Path C:\Program Files\Java\jdk-1.8\bin\RCXE856.tmp
        • Size 284KB
        • SHA256 543711c9a6edcccb1a62a39ece2d6d71c09176abbe26e34eab861f7400cda446
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        appletviewer.exe
        • Path C:\Program Files\Java\jdk-1.8\bin\appletviewer.exe
        • Size 284KB
        • SHA256 c3fbb4ce01b27acde5dce3582643c7cfc23c15e7e580758bdebd9fed8c37bba2
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download