Analysis

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

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    28/07/2026, 23:10

General

  • Target
    2026-07-28_3b837c5b2d6e3d7bc320ec7f8ab4a25b_coinminer_elex_wannacry.exe
  • Size 49KB
  • Sample260728-2562aacd76
  • SHA256 2461526a5b73196b893af39063b5082767b2b56526f0283c8d4b1c35f154f175
  • 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 (4398) 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\2026-07-28_3b837c5b2d6e3d7bc320ec7f8ab4a25b_coinminer_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-28_3b837c5b2d6e3d7bc320ec7f8ab4a25b_coinminer_elex_wannacry.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:3436

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        desktop.ini.tmp

        • Path C:\$Recycle.Bin\S-1-5-21-3611646547-550105268-947503007-1000\desktop.ini.tmp
        • Size 49KB
        • SHA256 e8a64a549f86f2060675507f46413cf013be0106051938dd0f7bc8316495fe99
        • MD5 SHA1 SHA512 SSDEEP TLSH

        7-zip.dll.tmp

        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 148KB
        • SHA256 5c30b51d9cda6d8a18d5f21d5406fb7184998b46f6a2f4acc2fa9766400848ba
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3436-0-0x0000000000400000-0x000000000040B000-memory.dmp

        memory/3436-557-0x0000000000400000-0x000000000040B000-memory.dmp