Analysis

  • max time kernel
    149s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    09/11/2026, 03:39

General

  • Target
    2026-11-08_53b556435a5e4da38923fbcff892bb0e_elex_rhadamanthys_smoke-loader.exe
  • Size 1.5MB
  • Sample261109-d73vmscd27
  • SHA256 342355bfef8309be415fb7be469f3194bd9f8f0231dc4f1eadecec3fe1b9ce19
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 2 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
  • Drops file in Program Files directory 21 IoCs
  • Drops file in Windows directory 2 IoCs
  • Program crash 1 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.

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-11-08_53b556435a5e4da38923fbcff892bb0e_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-11-08_53b556435a5e4da38923fbcff892bb0e_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:692
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 692 -s 808
      2⤵
      • Program crash
      PID:5396
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 692 -ip 692
    1⤵
      PID:2652

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          7z.cab

          • Path C:\Program Files\7-Zip\7z.cab
          • Size 549KB
          • SHA256 707f415d7d581edd9bce99a0429ad4629d3be0316c329e8b9ebd576f7ab50b71
          • MD5 SHA1 SHA512 SSDEEP TLSH

          7z.exe

          • Path C:\Program Files\7-Zip\7z.exe
          • Size 1.5MB
          • SHA256 8f06b76ee44c7a938c69ff92d479d2945380030c0b3f0e6507d23ecf00fe180c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          7zFM.cab

          • Path C:\Program Files\7-Zip\7zFM.cab
          • Size 963KB
          • SHA256 028cf2158df45889e9a565c9ce3c6648fb05c286b97f39c33317163e35d6f6be
          • MD5 SHA1 SHA512 SSDEEP TLSH

          RCX44C2.tmp

          • Path C:\Program Files\7-Zip\RCX44C2.tmp
          • Size 288KB
          • SHA256 66722fe36e811b7ec5d157871a30214da790c3bb514ea307c8e1b7ec8d36d739
          • MD5 SHA1 SHA512 SSDEEP TLSH

          appvcleaner.cab

          • Path C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.cab
          • Size 2.1MB
          • SHA256 7e0976036431640ae1d9f1c0b52bcea5dd37ef86cd3f5304dc8a96459d9483cd
          • MD5 SHA1 SHA512 SSDEEP TLSH