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, 22:47

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General

  • Target
    2026-07-28_6f81fd31e81152944bee7bba4cd8b7ed_elex_wannacry.exe
  • Size 311KB
  • Sample260728-2qxt3ayamd
  • SHA256 426475b41961213f934cd10835bc06078726a90813a3f47efa2829f94ecfc3b7
  • 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_6f81fd31e81152944bee7bba4cd8b7ed_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-28_6f81fd31e81152944bee7bba4cd8b7ed_elex_wannacry.exe"
    1⤵
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2744
    • C:\Users\Admin\AppData\Local\Temp\_zynap_service.exe
      "_zynap_service.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4164
    • 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:1240

Network

        MITRE ATT&CK Enterprise v16

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        Downloads

        desktop.ini.tmp
        • Path C:\$Recycle.Bin\S-1-5-21-1079202589-886135813-2527035092-1000\desktop.ini.tmp
        • Size 85KB
        • SHA256 e808c0e1b62c063a0e4494a1f4e4dcf60966156569109cce46a45ffefea20992
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _zynap_service.exe
        • Path C:\Users\Admin\AppData\Local\Temp\_zynap_service.exe
        • Size 225KB
        • SHA256 4196836930ca8fede9b73a776799612a9355a954f8846f8246d615a8b0d76da6
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        Zombie.exe
        • Path C:\Windows\SysWOW64\Zombie.exe
        • Size 85KB
        • SHA256 23c655f830f7623ae49b29409d1c739efb418185e65bc75de723863dce80296c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/4164-21-0x0000000000BC0000-0x0000000000BFA000-memory.dmp
        Download