Overview

overview

10

Static

static

M20S.exe

windows7_x64

8

M20S.exe

windows10_x64

10

Analysis

  • max time kernel
    232s
  • max time network
    300s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    28/09/2021, 11:10

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    M20S.exe

  • Size

    53KB

  • MD5

    c6731f9725749aae21f0ef0e06d4c631

  • SHA1

    68de72f9a02fd52e4cf740fcd301f71203117977

  • SHA256

    f3cb6b4abc5b037c7e277fc0ba044641b249a760c18555cfe4f6c9cf3453be61

  • SHA512

    f3a5ee1f6c67a0c752629390202c7db8684779aac3f8b958b3a7e72a22c78f72dc70b24584747cb0eaabdef23bc8ef49f2120fc42c92317002b04e885010fe31

Score
10/10
medusalockerransomwarespywarestealer

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\how_to_back_files.html

Family

medusalocker

Ransom Note
Your personal ID: ����������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ll your important files have been encrypted! Your files are safe! Only modified. (RSA+AES) ANY ATTEMPT TO RESTORE YOUR FILES WITH THIRD-PARTY SOFTWARE WILL PERMANENTLY CORRUPT IT. DO NOT MODIFY ENCRYPTED FILES. DO NOT RENAME ENCRYPTED FILES. No software available on internet can help you. We are the only ones able to solve your problem. We gathered highly confidential/personal data. These data are currently stored on a private server. This server will be immediately destroyed after your payment. If you decide to not pay, we will release your data to public or re-seller. So you can expect your data to be publicly available in the near future.. We only seek money and our goal is not to damage your reputation or prevent your business from running. You will can send us 2-3 non-important files and we will decrypt it for free to prove we are able to give your files back. Contact us for price and get decryption software. qd7pcafncosqfqu3ha6fcx4h6sr7tzwagzpcdcnytiw3b6varaeqv5yd.onion * Note that this server is available via Tor browser only Follow the instructions to open the link: 1. Type the addres "https://www.torproject.org" in your Internet browser. It opens the Tor site. 2. Press "Download Tor", then press "Download Tor Browser Bundle", install and run it. 3. Now you have Tor browser. In the Tor Browser open qd7pcafncosqfqu3ha6fcx4h6sr7tzwagzpcdcnytiw3b6varaeqv5yd.onion 4. Start a chat and follow the further instructions. If you can not use the above link, use the email: [email protected] [email protected] * To contact us, create a new free email account on the site: protonmail.com IF YOU DON'T CONTACT US WITHIN 72 HOURS, PRICE WILL BE HIGHER. �����

Signatures

  • MedusaLocker

    Ransomware with several variants first seen in September 2019.

    ransomwaremedusalocker
  • Modifies extensions of user files 14 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Drops desktop.ini file(s) 28 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies Internet Explorer settings 1 TTPs 3 IoCs
    adwarespyware
  • Modifies registry class 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\M20S.exe
    "C:\Users\Admin\AppData\Local\Temp\M20S.exe"
    1⤵
    • Modifies extensions of user files
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:2060
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\M20S.exe > nul
      2⤵
        PID:4484
    • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe
      "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe" -ServerName:MicrosoftEdge.AppXdnhjhccw3zf0j06tkg3jtqr00qdm0khc.mca
      1⤵
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:3076
    • C:\Windows\system32\browser_broker.exe
      C:\Windows\system32\browser_broker.exe -Embedding
      1⤵
      • Modifies Internet Explorer settings
      PID:4068
    • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
      "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
      1⤵
      • Modifies registry class
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1940
    • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
      "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
      1⤵
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      PID:3476
    • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
      "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
      1⤵
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      PID:4136

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads