Overview

overview

10

Static

static

10

2026-04-20...ry.exe

windows10-2004-x64

10

2026-04-20...ry.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    20/04/2026, 15:24

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General

  • Target
    2026-04-20_fe7d8d1191ae566ef7a613279d4ffcff_elex_wannacry.exe
  • Size 2.7MB
  • Sample260420-ss3nnah12x
  • SHA256 3d442ab1a9bd3bf973928ac167f6eec8df3451063c699b509fa32dc069e33504
  • 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++.

  • Custom signature
    Detects executables packed with eXPressor 4 IoCs
  • Renames multiple (1053) files with added filename extension

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

    ransomware
  • 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.

    discovery

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-04-20_fe7d8d1191ae566ef7a613279d4ffcff_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-20_fe7d8d1191ae566ef7a613279d4ffcff_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:3092

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp
        • Path C:\$Recycle.Bin\S-1-5-21-312252282-3884318443-358092420-1000\desktop.ini.tmp
        • Size 2.7MB
        • SHA256 c46338308a80a583fea36ad782ba83c899cfca64a3eb2ab856aba327fe046f2b
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        7-zip.dll.tmp
        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 2.8MB
        • SHA256 f2db203a37dc46e68072d51d28ad7db5f9366f8b3ae603355b03266bebaae834
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/3092-0-0x0000000000400000-0x000000000040A000-memory.dmp
        Download

        memory/3092-203-0x0000000000400000-0x000000000040A000-memory.dmp
        Download