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mattifestation's profile
Matt Graeber
Matt Graeber
Matt Graeber
@mattifestation

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Matt Graeber

@mattifestation

Father, husband, Navy vet, all around n00b. Security realist and optimist. Security Researcher @SpecterOps

Bouvetøya
exploit-monday.com
Joined April 2009

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    Matt Graeber‏ @mattifestation Jul 24

    #PowerShell IMO is too noisy to remain a "living off the land" technique. The new hotness: .NET assembly loading via insecure methods.

    4:26 AM - 24 Jul 2017
    • 54 Retweets
    • 122 Likes
    • Carlos Alcobia Chris Bill Burgess crypto antivaxxer Ayoub Casey Smith Adrian Rodriguez Anton Harish Haridasan
    3 replies 54 retweets 122 likes
      1. New conversation
      2. Matt Graeber‏ @mattifestation Jul 24
        Replying to @mattifestation

        Specifically, getting code execution via insecure .NET methods in trusted code: Assembly.Load, BinaryFormatter, etc.

        4 replies 2 retweets 19 likes
      3. Matt Graeber‏ @mattifestation Jul 24
        Replying to @mattifestation

        Matt Graeber Retweeted Casey Smith

        The people innovating in this space are @tiraniddo, @subTee, and @tifkin_.https://twitter.com/subTee/status/889448552723644416 …

        Matt Graeber added,

        Casey Smith @subTee
        Replying to @mattifestation
        <msxsl:script> 😀 https://docs.microsoft.com/en-us/dotnet/standard/data/xml/xslt-stylesheet-scripting-using-msxsl-script …
        0 replies 4 retweets 13 likes
      4. End of conversation
      1. New conversation
      2. Anton‏ @Antonlovesdnb Jul 24
        Replying to @mattifestation

        .NET logs as comprehensive as PS logs would be huge...

        1 reply 0 retweets 0 likes
      3. Matt Graeber‏ @mattifestation Jul 24
        Replying to @Antonlovesdnb

        Yes! The equivalent of scriptblock autologging (only .NET method tracing) for suspicious .NET methods would be amazing!

        1 reply 0 retweets 3 likes
      4. Anton‏ @Antonlovesdnb Jul 24
        Replying to @mattifestation

        @Lee_Holmes could work some magic again?

        1 reply 0 retweets 0 likes
      5. Matt Graeber‏ @mattifestation Jul 24
        Replying to @Antonlovesdnb @Lee_Holmes

        Naw let's throw @blowdart under the bus to help get some .NET optics. 😝

        1 reply 0 retweets 2 likes
      6. Barry Dorrans‏Verified account @blowdart Jul 24
        Replying to @mattifestation @Antonlovesdnb @Lee_Holmes

        Every .net method is suspect. That log would be huge. No no no.

        1 reply 0 retweets 2 likes
      7. James Forshaw‏ @tiraniddo Jul 24
        Replying to @blowdart @mattifestation and

        You're misunderstanding, you just need to be shown to be doing something. Doesn't matter if it's impractical in the real world.

        1 reply 0 retweets 3 likes
      8. Barry Dorrans‏Verified account @blowdart Jul 24
        Replying to @tiraniddo @mattifestation and

        That's depressingly true.

        0 replies 0 retweets 1 like
      9. End of conversation
      1. New conversation
      2. Jacob Soo‏ @_jsoo_ Jul 24
        Replying to @mattifestation

        Sounds like this one sir? https://labs.mwrinfosecurity.com/blog/securing-the-loading-of-dynamic-code/ …

        1 reply 2 retweets 6 likes
      3. Matt Graeber‏ @mattifestation Jul 24
        Replying to @_jsoo_

        Yup! And this https://tyranidslair.blogspot.com/2017/07/dg-on-windows-10-s-executing-arbitrary.html … and this http://subt0x10.blogspot.com/2017/04/bypassing-application-whitelisting.html … and this http://www.exploit-monday.com/2017/07/bypassing-device-guard-with-dotnet-methods.html …, etc.

        1 reply 4 retweets 14 likes
      4. Jacob Soo‏ @_jsoo_ Jul 24
        Replying to @mattifestation

        yes sir. I like all of them. :D

        0 replies 0 retweets 0 likes
      5. End of conversation

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