Overview

overview

10

Static

static

10

2026-09-24...ry.exe

windows10-2004-x64

10

2026-09-24...ry.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    126s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    25/09/2026, 09:08

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General

  • Target
    2026-09-24_5afb427dd220966b8b2aee6dc037bd9b_coinminer_elex_wannacry.exe
  • Size 1.1MB
  • Sample260925-k37rcstcke
  • SHA256 8f554cbf9c4bc1cdba211a266e78be9881a1671b4c741ced0fa0d9c3260d5936
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
discoverycosmuransomwareupxworm

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++.

  • Renames multiple (4244) files with added filename extension

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

    ransomware
  • UPX dump on OEP (original entry point) 4 IoCs
  • Executes dropped EXE 2 IoCs
  • Drops file in System32 directory 2 IoCs
  • UPX packed file 4 IoCs

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

    upx
  • Drops file in Program Files directory 64 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-09-24_5afb427dd220966b8b2aee6dc037bd9b_coinminer_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-24_5afb427dd220966b8b2aee6dc037bd9b_coinminer_elex_wannacry.exe"
    1⤵
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4952
    • C:\Windows\SysWOW64\Zombie.exe
      "C:\Windows\system32\Zombie.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      PID:4560
    • C:\Users\Admin\AppData\Local\Temp\_analyzer.exe
      "_analyzer.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:5836

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp
        • Path C:\$Recycle.Bin\S-1-5-21-1404337215-1550464601-2805570857-1000\desktop.ini.tmp
        • Size 96KB
        • SHA256 8fd5afb69835c613c724fdc313592786fd216596c31e40f5338500ba3ce89739
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        _analyzer.exe
        • Path C:\Users\Admin\AppData\Local\Temp\_analyzer.exe
        • Size 1021KB
        • SHA256 359705b4aced40bbbf81621ee83cc5ed2aaec74d49842580508312a824a40ae2
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        Zombie.exe
        • Path C:\Windows\SysWOW64\Zombie.exe
        • Size 96KB
        • SHA256 a02e0485ccf9b2b64720d435fd070a2019a89fe2a66459038752046086fc7181
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/4952-0-0x0000000000400000-0x000000000040B000-memory.dmp
        Download

        memory/4952-30-0x0000000000400000-0x000000000040B000-memory.dmp
        Download