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Wayne11
Wayne11
Explorer
February 18, 2016
Solved

“Locky” ransomware

  • February 18, 2016
  • 6 replies
  • 40701 views

Hi guys

I'm definitely not paranoid, but I'm a bit scared of the new "Locky" ransomware. Fortinet has published yesterday a blog post about Locky, but I can't find anything in the AV signature database nor in the IPS for this Locky bastard. Does anyone know which scan engine is able to detect Locky or Dridex?

 

Thx

Wayne

    Best answer by Carl_Wallmark
    My old collegue is sitting with a customer as we speak, they got Locky in a word document containing a macro, encrypted 400000 files. He is going to be there all night.... I also want a signature now ;)

    6 replies

    Carl_Wallmark
    Carl_WallmarkAnswer
    New Member
    February 18, 2016
    My old collegue is sitting with a customer as we speak, they got Locky in a word document containing a macro, encrypted 400000 files. He is going to be there all night.... I also want a signature now ;)
    Troubleshooter_73
    Troubleshooter_73
    Explorer
    February 19, 2016

    http://blog.fortinet.com/post/a-closer-look-at-locky-ransomware-2

    Carl_Wallmark
    Carl_Wallmark
    New Member
    February 19, 2016

    Sweet, but cannot find it in my lists. Anyone found it ?

    Carl_Wallmark
    Carl_Wallmark
    New Member
    February 22, 2016

    I have a custom IPS rule for Locky provided by FortiGuard IPS Team,

     

    If anyone is intressted, please PM me.

     

    But be aware, it´s not a public signature yet, it could produce false positives.

    SecurityPlus
    SecurityPlus
    Explorer III
    March 1, 2016

    I too am curious. I also search for Locky after reviewing this article:

    https://blog.fortinet.com/post/a-closer-look-at-locky-ransomware-2

     

    From the tone of the article I assumed that the protection was already in place but I can't find that users are protected. Does anyone know more about this.

     

    Thanks

    mm729p
    mm729p
    New Member
    March 29, 2016

    Does anyone know the update version this was pushed out in?  I am trying to narrow down in our manager the exact signature.  I read somewhere that it was under Application Control, but I was not able to verify it there.  Any help would be appreciated.

    hanmyoehtet
    hanmyoehtet
    New Member
    March 29, 2016

    Hi all,

    I cant find locky.botnet IPS signature in my IPS signature list. The latest update for IPS is 29/3/2016. How can I verify if that signature is installed or not. Thanks.

     

    MrSinners
    MrSinners
    New Member
    March 29, 2016

    hanmyoehtet wrote:

    Hi all,

    I cant find locky.botnet IPS signature in my IPS signature list. The latest update for IPS is 29/3/2016. How can I verify if that signature is installed or not. Thanks.

     

    It's not available in the IPS list, it's listed under Application Control. Choose 'Application Override' within an AC profile and search for Locky.

    Fahad
    Fahad
    New Member
    April 5, 2016

    its under botnet check my screenshot attached

    finjoe
    finjoe
    New Member
    November 14, 2017

    Might be an easier way of doing this but here's what worked for me:

    [ol]

  • Install letsencrypt on a box with tcp/80, tcp/443 open.

  • Temporarily point the DNS A record of your SSL VPN at the box you're going to run letsencrypt on.

  • Run letsencrypt-auto -d vpn.yoursite.com and when prompted choose the standalone server option.

  • Undo step 2 by pointing your DNS A record back at your SSL VPN IP

  • Grab your pems from /etc/letsencrypt/live/vpn.yoursite.com

    [/ol]

    FortiGate:

    [ol]

  • System -> Config -> Certificates -> Import -> Local Certificate. Set type to Certificate. For certificate choose cert.pem and for key choose privkey.pem

  • VPN -> SSL -> Settings. Change Server Certificate.

  • Repeat process every 90 days

    [/ol]

    Here is the VPN Encryption Guide if you need any other configuration. 

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