Analysis

  • max time kernel
    150s
  • max time network
    144s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    09/08/2026, 20:02

General

  • Target
    2026-08-09_1f224b8dd1a9fbb440e7c5da56415e51_elex_icedid_njrat_vidar.exe
  • Size 717KB
  • Sample260809-yr75msvelc
  • SHA256 3be4fac3209e11e55b0a243a4e74c196baedac8a0c1f66993385272b0e87284e
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 1 IoCs

    Cosmu is a worm written in C++.

  • Detects executables packed with eXPressor 4 IoCs
  • Renames multiple (1972) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-09_1f224b8dd1a9fbb440e7c5da56415e51_elex_icedid_njrat_vidar.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-09_1f224b8dd1a9fbb440e7c5da56415e51_elex_icedid_njrat_vidar.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:5584

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-2301830172-776172150-2531349243-1000\desktop.ini.tmp
        • Size 717KB
        • SHA256 4065d9e441acbfd73a4e17687dc10e317ce7c857bd0586684a0a843494771e60
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 816KB
        • SHA256 a8b376d0a5c4e4bfafeaf6f24bc252752d28a9e5ae7a8bae3bcabf5135a8674d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/5584-0-0x0000000000400000-0x000000000040B000-memory.dmp

        memory/5584-351-0x0000000000400000-0x000000000040B000-memory.dmp