Overview

overview

10

Static

static

10

2026-09-24...ry.exe

windows10-2004-x64

10

2026-09-24...ry.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    25/09/2026, 13:51

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General

  • Target
    2026-09-24_1e788750ae7bc8fb45f5947e3b3a0a9a_cobalt-strike_elex_vidar_wannacry.exe
  • Size 605KB
  • Sample260925-q58dkatvbw
  • SHA256 ba77e74e3e89367ffd2ce3c4d754c52b5f410a55a920970382148e4f0f452bcd
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
discoverycosmuransomwareworm

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++.

  • Detects executables packed with eXPressor 4 IoCs
  • Renames multiple (4881) files with added filename extension

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

    ransomware
  • Executes dropped EXE 2 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-09-24_1e788750ae7bc8fb45f5947e3b3a0a9a_cobalt-strike_elex_vidar_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-24_1e788750ae7bc8fb45f5947e3b3a0a9a_cobalt-strike_elex_vidar_wannacry.exe"
    1⤵
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4604
    • C:\Windows\SysWOW64\Zombie.exe
      "C:\Windows\system32\Zombie.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      PID:3732
    • C:\Users\Admin\AppData\Local\Temp\_LICLUA.EXE
      "_LICLUA.EXE"
      2⤵
      • Executes dropped EXE
      PID:5276

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp
        • Path C:\$Recycle.Bin\S-1-5-21-1704430598-3087477806-3297458608-1000\desktop.ini.tmp
        • Size 26KB
        • SHA256 5bc610ebf39a43f2f29bbdf045d2b6ae0482a294cb0d192f81baa90e287a2792
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _LICLUA.EXE
        • Path C:\Users\Admin\AppData\Local\Temp\_LICLUA.EXE
        • Size 579KB
        • SHA256 45b570950e57b3c2e8bb7b00f2732c74cf07b0230dadd87f64655e7439c9205a
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        Zombie.exe
        • Path C:\Windows\SysWOW64\Zombie.exe
        • Size 25KB
        • SHA256 d257d97ae5e409c10a5e9f9894cc98395cb8f8e90bd17fbef199250e4e9af16c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/4604-0-0x0000000000400000-0x0000000000409D5C-memory.dmp
        Download

        memory/4604-568-0x0000000000400000-0x0000000000409D5C-memory.dmp
        Download