Windows 10: MDATP doesn't constantly detect a ransomware-type mass encryption

Discus and support MDATP doesn't constantly detect a ransomware-type mass encryption in AntiVirus, Firewalls and System Security to solve the problem; Hello,As a part of security tastings, to see the efficacy level of MDATP, we are running a PowerShell script encrypt_ransomware.ps1 found in the GitHub... Discussion in 'AntiVirus, Firewalls and System Security' started by Cro_Srika, May 26, 2021.

  1. Cro_Srika Win User

    MDATP doesn't constantly detect a ransomware-type mass encryption


    Hello,As a part of security tastings, to see the efficacy level of MDATP, we are running a PowerShell script encrypt_ransomware.ps1 found in the GitHub GitHub - leomatias/Ransomware-Simulator that encrypts a bulk number of files and behaves like ransomware.The workstations used are Windows 10 Enterprise enrolled in Intune with similar policies & settings. The user accounts used to execute the scripts are administrators, but we only run the scripts as standard PowerShell sessions meaning not 'run as administrator'. We rely on MDATP protection to detect this event and we confir

    :)
     
    Cro_Srika, May 26, 2021
    #1
  2. Jsssssssss, May 26, 2021
    #2
  3. Filed encrypted by Tor ransomware

    More information is needed to determine specifically what infection you are dealing with since there are many variants of crypto malware (file encrypting ransomware).
    RSA-4096 / RSA-2048 / RSA-1024 / AES-256 / AES-128 are
    encryption algorithms
    and not an explicit way of identifying a particular ransomware infection.

    Are there any obvious file extensions appended to or with your encrypted data files (i.e. several random hexadecimal characters, words or email addresses)? If so, is the extension the same for each encrypted file or is it different?

    What is the actual name of your ransom note? These infections are created to alert victims that their data has been encrypted and demand a ransom payment. Check your documents folder for an image the malware typically uses for the background note. Check the
    C:\ProgramData (or C:\Documents and Settings\All Users\Application Data) for a randomly named
    .html, .txt, .png, .bmp, .url file. Most ransomware will also drop a ransom note in every directory/affected folder where data has been encrypted.

    The best way to identify the different ransomwares is the ransom note (including it's name), the malware file itself, any obvious extensions appended to the encrypted files, samples of those encrypted files and information related to the email address used
    by the cyber-criminals.

    You can submit samples of encrypted files and ransom notes to ID Ransomware for
    assistance with identification and confirmation. This is a service that helps identify what ransomware may have encrypted your files and then attempts to direct you to an appropriate support topic where you can seek further
    assistance. Uploading both encrypted files and ransom notes together provides a more positive match and helps to avoid false detections.

    After gathering that information, please read and follow the instructions below.

     
    quietman7 - MVP, May 26, 2021
    #3
  4. MDATP doesn't constantly detect a ransomware-type mass encryption

    Detecting and Removing Ransomware

    The best defensive strategy to protect yourself from malware and ransomware (crypto malware) infections is a

    comprehensive approach
    to include prevention and your
    best defense is back up, back up, and more back up on a regular basis. Preferably keeping a separate, offline backup to a device that is not always connected to the network.


    IMPORTANT!!! When implementing a backup strategy
    include testing to ensure it works before an emergency arises; routinely check to verify backups are being made and stored properly; remove (disconnect) and isolate all backups from the network or home computer...if not, you risk ransomware
    infecting them when it strikes.

    For more suggestions to protect yourself from ransomware infections, see my comments (Post #2) in this topic...Ransomware
    Avoidance
    .
     
    quietman7 - MVP, May 26, 2021
    #4
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MDATP doesn't constantly detect a ransomware-type mass encryption

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