Analysis

  • max time kernel
    150s
  • max time network
    126s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    26/08/2026, 08:18

General

  • Target
    2026-08-25_d08d01642285acee97f2f7ecdb25c5f4_coinminer_elex_wannacry.exe
  • Size 68KB
  • Sample260826-j7eeyavemd
  • SHA256 6dbb86700276c0cdbfbf7699c56801a09033b841f572c4512bed0cd4d1349575
  • 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++.

  • Renames multiple (4744) files with added filename extension

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

  • UPX dump on OEP (original entry point) 4 IoCs
  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\2026-08-25_d08d01642285acee97f2f7ecdb25c5f4_coinminer_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-25_d08d01642285acee97f2f7ecdb25c5f4_coinminer_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:3124

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-552508041-2681165170-3229858294-1000\desktop.ini.tmp
        • Size 68KB
        • SHA256 e8b1437c2bc633fe147c271f8ac2bcf2e0b99c03f78039d0b02011123ac6180b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 167KB
        • SHA256 666dde79f6ca0da5b006a8b2e9683bd9931e65bd9f8d8f1a4ba81220b5f6cf08
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3124-0-0x0000000000400000-0x000000000040B000-memory.dmp

        memory/3124-583-0x0000000000400000-0x000000000040B000-memory.dmp