Overview

overview

10

Static

static

10

2026-04-15...ry.exe

windows10-2004-x64

10

2026-04-15...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
    15/04/2026, 04:03

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General

  • Target
    2026-04-15_6cc7eae314baa7b568b32f07575dfb17_elex_wannacry.exe
  • Size 496KB
  • Sample260415-emccmaet5j
  • SHA256 ba659189940c05cd24d09e62c995be84014446f32a75f9d4ec5a6c7b775f7077
  • 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 (3997) 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\2026-04-15_6cc7eae314baa7b568b32f07575dfb17_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-15_6cc7eae314baa7b568b32f07575dfb17_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:628

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp
        • Path C:\$Recycle.Bin\S-1-5-21-2714754311-527593155-1440850301-1000\desktop.ini.tmp
        • Size 496KB
        • SHA256 c98b6c30d11c4c5667000b9b38b1b576aac64e3b5c5c1cf52d6aa92b36dbba05
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        7-zip.dll.tmp
        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 595KB
        • SHA256 5aad6fec36207d24a05b1f951a43c9854c7763a6884994bc9ff4e9eefd42acd7
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/628-0-0x0000000000400000-0x000000000040A000-memory.dmp
        Download

        memory/628-482-0x0000000000400000-0x000000000040A000-memory.dmp
        Download