Overview

overview

10

Static

static

10

2026-04-17...ry.exe

windows10-2004-x64

10

2026-04-17...ry.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    95s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    17/04/2026, 15:18

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General

  • Target
    2026-04-17_de8291ca69ae16c8a909404802397a0d_elex_wannacry.exe
  • Size 3.2MB
  • Sample260417-spl7haay3m
  • SHA256 e46ef627ace85070530491dae03b0375f13d3c0d675b8850ef212e44f9c39543
  • 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 (859) 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\2026-04-17_de8291ca69ae16c8a909404802397a0d_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-17_de8291ca69ae16c8a909404802397a0d_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:8

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp
        • Path C:\$Recycle.Bin\S-1-5-21-600123060-2148212387-2211176695-1000\desktop.ini.tmp
        • Size 3.2MB
        • SHA256 99295e2e265956341c80f8c1f72a584181c2ac8237a42c631afb3c8be69f64f2
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        7-zip.dll.tmp
        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 3.3MB
        • SHA256 a0cc95c8272ebed0dc17992debdc4c3254e66219a30bf61dc38ea15a85ae0693
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/8-0-0x0000000000400000-0x000000000040A000-memory.dmp
        Download

        memory/8-174-0x0000000000400000-0x000000000040A000-memory.dmp
        Download