Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    15/04/2026, 04:32

General

  • Target
    2026-04-15_cc868d12f452742f357f0aecbdc54185_elex_wannacry.exe
  • Size 992KB
  • Sample260415-e6f5xsey2l
  • SHA256 19678bee632b2a30b248db0756297e32729668ae51ed53b5f0f2630c619c1528
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Cosmu

    Cosmu is a Windows worm written in C++.

  • Detects Cosmu payload 4 IoCs

    Cosmu is a worm written in C++.

  • Detects executables packed with eXPressor 4 IoCs
  • Renames multiple (2314) files with added filename extension

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

  • 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-04-15_cc868d12f452742f357f0aecbdc54185_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-15_cc868d12f452742f357f0aecbdc54185_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:3452

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-2397528088-2630719772-1129911217-1000\desktop.ini.tmp
        • Size 992KB
        • SHA256 c9e01db896cbe6a9877686b017029235eef13fbb3f4cee237c6292c1075c5ea1
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 1.1MB
        • SHA256 a40f95b73cfbe2c35088c7544ac6bdc87dbb38cefd43ccf67379f8ebb1fb56d3
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3452-0-0x0000000000400000-0x000000000040A000-memory.dmp

        memory/3452-397-0x0000000000400000-0x000000000040A000-memory.dmp