Analysis

  • max time kernel
    149s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    25/09/2026, 06:02

General

  • Target
    2026-09-24_82fa8d60ddeaa6cb37ad9c8aaf8faf3c_elex_rhadamanthys_smoke-loader.exe
  • Size 1.5MB
  • Sample260925-grrn8abb47
  • SHA256 076a16f4f897fc766f97fb3ce264a989d56cd18900082e17fa29a089b4617da6
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • 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.

  • Drops file in Program Files directory 58 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-09-24_82fa8d60ddeaa6cb37ad9c8aaf8faf3c_elex_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-24_82fa8d60ddeaa6cb37ad9c8aaf8faf3c_elex_rhadamanthys_smoke-loader.exe"
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:3168
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3168 -s 1040
      2⤵
      • Program crash
      PID:4552
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3168 -ip 3168
    1⤵
      PID:4372

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          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 15a3f25023b1ad0acbfb0920deb73e1683f9c94b0b914f44f0f86efefc48f84a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          7zFM.cab

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

          AppVShNotify.cab

          • Path C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVShNotify.cab
          • Size 281KB
          • SHA256 6d54694077faf07473196da7b7f1c6981c8ad6a462fcea4777a80cfc6bc5769e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          RCXA8C4.tmp

          • Path C:\Program Files\Common Files\microsoft shared\ClickToRun\RCXA8C4.tmp
          • Size 1.5MB
          • SHA256 6e30306f5527ee734c5aa058a6a6e77793b0d726a43b171f57531624464cee0f
          • 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

          RCXA9DB.tmp

          • Path C:\Program Files\Google\Chrome\Application\RCXA9DB.tmp
          • Size 420KB
          • SHA256 6d41ce1694f37b34f2465fa8807adfd2f6544a89c703d43b805f1ab6f66cccaf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          chrome.cab

          • Path C:\Program Files\Google\Chrome\Application\chrome.cab
          • Size 3.1MB
          • SHA256 fdcfa390134b6d9a6bb68f9b7c452c01701e2b27fca1b9227e5b92f652df2457
          • MD5 SHA1 SHA512 SSDEEP TLSH

          dotnet.cab

          • Path C:\Program Files\dotnet\dotnet.cab
          • Size 143KB
          • SHA256 7ae20d0542a544b54730a5520a2c7b56dc9235be1a4dc1331763786a16fabed9
          • MD5 SHA1 SHA512 SSDEEP TLSH

          dotnet.exe

          • Path C:\Program Files\dotnet\dotnet.exe
          • Size 328KB
          • SHA256 5e1a737f644cb07643e3cd5f1447bab18f03e7bd4dcd6f756561d995fb05f4c4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          createdump.cab

          • Path C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\createdump.cab
          • Size 56KB
          • SHA256 6e25f414dd65440cd0c285990f4eef789a831fff640dadb4afdf79a5dfd95bc2
          • MD5 SHA1 SHA512 SSDEEP TLSH