Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    08/08/2026, 11:38

General

  • Target
    2026-08-08_90cc894df6508f6c82a85d1648c95db8_elex_wannacry.exe
  • Size 2.0MB
  • Sample260808-nrtbdaen3t
  • SHA256 67aeef90341f5c97a9218e06d54a15ed8fcaa1ed4099ff19148ba0ca2e4b1091
  • 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 (1365) 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\2026-08-08_90cc894df6508f6c82a85d1648c95db8_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-08_90cc894df6508f6c82a85d1648c95db8_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:5016

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-1788976790-1541110888-1636651838-1000\desktop.ini.tmp
        • Size 2.0MB
        • SHA256 498650e7d86cdb0da02db8b9175ab4d21cc3929c6a19c0c6d7777340fef55b1a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 2.1MB
        • SHA256 72de93d7004a0303ae3979c36a6436cb78554440b0f7faef615512998a3c1e4b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/5016-0-0x0000000000400000-0x000000000040A000-memory.dmp

        memory/5016-239-0x0000000000400000-0x000000000040A000-memory.dmp