Overview

overview

10

Static

static

10

2026-08-04...er.exe

windows10-2004-x64

10

2026-08-04...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
    04/08/2026, 06:30

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General

  • Target
    2026-08-04_8545257ef6792514561ab35591e52956_elex_rhadamanthys_smoke-loader.exe
  • Size 452KB
  • Sample260804-g9we5aed63
  • SHA256 d5b21a277b8307f26e63de043ad47a4d686247a976bb4aa065e3f4bb8d9f9c11
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
discoverycosmuworm

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.

  • Drops file in Program Files directory 64 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-04_8545257ef6792514561ab35591e52956_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-04_8545257ef6792514561ab35591e52956_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:4172

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe
        • Path C:\Program Files\7-Zip\7z.exe
        • Size 338KB
        • SHA256 bee3aeff29dd35600a21d629b713bf7e8d0817e4689df2b84354c5e3a5b34c82
        • 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 391db609cc04139518488c9712f9f9ce60c2b8ba6b205feada342447d7c38d68
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCXA0ED.tmp
        • Path C:\Program Files\Google\Chrome\Application\RCXA0ED.tmp
        • Size 1.5MB
        • SHA256 673842e8c846a3b17b50b66c0116a53091cd8610a035c5e8051b61ba263003a1
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCXA2CC.tmp
        • Path C:\Program Files\Java\jdk-1.8\bin\RCXA2CC.tmp
        • Size 288KB
        • SHA256 ce87675b5c604befd82bc527e2b3606453aab61facdd7dcf8c54bf5d7e454219
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        crashreporter.exe
        • Path C:\Program Files\Mozilla Firefox\crashreporter.exe
        • Size 1.5MB
        • SHA256 590401faf5fdedc1098cc999ceb6e908c1f80cc30ac0b1a880d639ba3052142a
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download