Overview

overview

10

Static

static

10

2026-08-16...er.exe

windows10-2004-x64

10

2026-08-16...er.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    115s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    16/08/2026, 02:05

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General

  • Target
    2026-08-16_91638a14c91425945eac807a1f6b8d6d_elex_rhadamanthys_smoke-loader.exe
  • Size 284KB
  • Sample260816-ch6dssyshx
  • SHA256 23dbcbe6546bda48f74d96f2f9445527bb64d0cd5d4b7b50aae29a1dd91b9602
  • 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\2026-08-16_91638a14c91425945eac807a1f6b8d6d_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-16_91638a14c91425945eac807a1f6b8d6d_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:996

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        7z.exe
        • Path C:\Program Files\7-Zip\7z.exe
        • Size 325KB
        • SHA256 3e9ea54a6f1494968a84fa1d3866e111ff53f42a30c5b05695e10b5efa42d7f9
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        chrmstp.exe
        • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\chrmstp.exe
        • Size 1.5MB
        • SHA256 71164045b2c635bbd9123c58871fb0f108a07c7557c96d2fd4942d5bfe695175
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX4DEB.tmp
        • Path C:\Program Files\Google\Chrome\Application\RCX4DEB.tmp
        • Size 284KB
        • SHA256 44c84fec8c07d72456dfe33e07fe59776dd68940aeb74c06a45090ae3a3d34e6
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        RCX4F9B.tmp
        • Path C:\Program Files\Java\jdk-1.8\bin\RCX4F9B.tmp
        • Size 284KB
        • SHA256 ce1914b719f6341b8d49b1b32c61c993c30eba8f7262345649655eb0d40be1d4
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download