Overview

overview

10

Static

static

10

2026-09-29...ry.exe

windows10-2004-x64

10

2026-09-29...ry.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    30/09/2026, 04:27

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General

  • Target
    2026-09-29_217a6e6f608596751b9d89424215fca5_coinminer_elex_wannacry.exe
  • Size 1.6MB
  • Sample260930-e3fd8axbna
  • SHA256 46ea390412aa8c924db18f18a75607116d17347f7c394f66e7e844ba4eea3731
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
discoveryexecutioncosmupersistenceprivilege_escalationransomwareupxworm

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 (1593) 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
  • Creates a file in the Startup directory 1 TTPs 1 IoCs

    A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

    persistenceprivilege_escalation
  • Suspicious use of SetThreadContext 1 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
  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

    execution
  • 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 behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-09-29_217a6e6f608596751b9d89424215fca5_coinminer_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-09-29_217a6e6f608596751b9d89424215fca5_coinminer_elex_wannacry.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1984
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c echo on error resume next:CreateObject("WScript.Shell").Run "C:\Users\Admin\AppData\Local\Temp\2026-09-29_217a6e6f608596751b9d89424215fca5_coinminer_elex_wannacry.exe",1: >"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\x.vbs"
      2⤵
      • Creates a file in the Startup directory
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      PID:1412
    • C:\Users\Admin\AppData\Local\Temp\2026-09-29_217a6e6f608596751b9d89424215fca5_coinminer_elex_wannacry.exe
      C:\Users\Admin\AppData\Local\Temp\2026-09-29_217a6e6f608596751b9d89424215fca5_coinminer_elex_wannacry.exe
      2⤵
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      PID:3100

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        desktop.ini.tmp
        • Path C:\$Recycle.Bin\S-1-5-21-939655444-3071939294-1401108526-1000\desktop.ini.tmp
        • Size 1.6MB
        • SHA256 04798e1a46e8d752c973e12462c1eaf9dfeff8e44dfb0ed2ebc5619da3694999
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        7-zip.dll.tmp
        • Path C:\Program Files\7-Zip\7-zip.dll.tmp
        • Size 1.7MB
        • SHA256 324370f1af8835095865c20a9564a0e23e8b171f9eaedc26aadf948517e3410c
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/1984-0-0x0000000000400000-0x000000000046E000-memory.dmp
        Download

        memory/1984-1-0x000000000040C000-0x000000000040D000-memory.dmp
        Download

        memory/1984-10-0x0000000000400000-0x000000000046E000-memory.dmp
        Download

        memory/3100-4-0x0000000000400000-0x0000000000658000-memory.dmp
        Download

        memory/3100-5-0x0000000000400000-0x0000000000658000-memory.dmp
        Download

        memory/3100-9-0x0000000000400000-0x000000000040C000-memory.dmp
        Download

        memory/3100-3-0x0000000000400000-0x0000000000658000-memory.dmp
        Download