Overview

overview

10

Static

static

10

2026-07-28...ry.exe

windows10-2004-x64

10

2026-07-28...ry.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    28/07/2026, 22:33

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General

  • Target
    2026-07-28_8ff7cecc71a6b1829a0a54d86db7ff7c_elex_wannacry.exe
  • Size 181KB
  • Sample260728-2glqfaar9s
  • SHA256 390218cb99c5dd2b1144341feb2449c7019f80056776a27dbde1810758afe212
  • 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 2 IoCs

    Cosmu is a worm written in C++.

  • Renames multiple (4157) 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 3 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\2026-07-28_8ff7cecc71a6b1829a0a54d86db7ff7c_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-28_8ff7cecc71a6b1829a0a54d86db7ff7c_elex_wannacry.exe"
    1⤵
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:752
    • 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:4156
    • C:\Users\Admin\AppData\Local\Temp\_install_eva_factory.exe
      "_install_eva_factory.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:5432

Network

        MITRE ATT&CK Enterprise v16

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        Downloads

        desktop.ini.tmp
        • Path C:\$Recycle.Bin\S-1-5-21-3797332335-34111092-3597280141-1000\desktop.ini.tmp
        • Size 76KB
        • SHA256 3a250b108f40f6da9faf3c02d0097888239762e4da79841ea8356a35d88df58e
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _install_eva_factory.exe
        • Path C:\Users\Admin\AppData\Local\Temp\_install_eva_factory.exe
        • Size 105KB
        • SHA256 10558ec7ecd39ab3fa5aed9356c1ca89bceb0e37794d06bd8bcf2aa0e1100da3
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        Zombie.exe
        • Path C:\Windows\SysWOW64\Zombie.exe
        • Size 76KB
        • SHA256 0f72bf56dcfd0f28cf1b7506fea7fb50288993c32d900d51826c1ca2f2087978
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/5432-567-0x0000000000400000-0x000000000041D000-memory.dmp
        Download