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JakubKroustek's profile
Jakub Kroustek
Jakub Kroustek
Jakub Kroustek
@JakubKroustek

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Jakub Kroustek

@JakubKroustek

ɿɘɘniǫnɘ ɘƨɿɘvɘЯ / Malware hexorcist / Researcher / Malware Research Director at Avast. My tweets, my opinions.

Avast, CZ
linkedin.com/in/jakubkroust…
Joined July 2009

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    Jakub Kroustek‏ @JakubKroustek 24 Aug 2016

    #Fantom #ransomware mimics Windows Update while encrypting your files. https://www.virustotal.com/en/file/f4234a501edcd30d3bc15c983692c9450383b73bdd310059405c5e3a43cc730b/analysis/1472060676/ …pic.twitter.com/F5lz1cQE3v

    11:03 AM - 24 Aug 2016
    • 60 Retweets
    • 44 Likes
    • Lynx Technology Partners Maisie Hughes LuckaPH Gábor Héja Claretha Mazza 금이별이 Cindie Donato Leo Rednaer
    5 replies 60 retweets 44 likes
      1. New conversation
      1. R0bert R0senb0rg‏ @drProct0r 24 Aug 2016
        Replying to @JakubKroustek

        all files encripted :D

        1 reply 0 retweets 1 like
      2. Jakub Kroustek‏ @JakubKroustek 24 Aug 2016
        Replying to @drProct0r

        <-- #grammarnazi ;)

        0 replies 0 retweets 2 likes
        3. End of conversation
      1. Marcelo Rivero‏ @MarceloRivero 24 Aug 2016
        Replying to @JakubKroustek

        DECRYPT_YOUR_FILES.HTML looks like ransomware: #RemindMe / #Rush, but I like the trick of Windows Update ;-)

        0 replies 0 retweets 5 likes
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      1. MalwareHunterTeam‏ @malwrhunterteam 24 Aug 2016
        Replying to @JakubKroustek

        @BleepinComputer @demonslay335 Targeted extensions (better said "words" as they call the list):pic.twitter.com/MVwEzk9uFE

        0 replies 0 retweets 2 likes
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      1. Alęxandęr Hanęl‏ @nullandnull 24 Aug 2016
        Replying to @JakubKroustek

        the .NET anti-debugging is a nice touch. I have never seen checks for mscorjit.dll, clrjit.dll & Cor_Enable_Profiling before.

        0 replies 0 retweets 1 like
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      5. New conversation
      1. Tim‏ @bug_bear 30 Aug 2016
        Replying to @JakubKroustek

        Fake copyright info in attributes is a nice touch, is the binary signed out of curiosity?

        1 reply 0 retweets 0 likes
      2. Jakub Kroustek‏ @JakubKroustek 30 Aug 2016
        Replying to @bug_bear

        No, it is not signed.

        0 replies 0 retweets 0 likes
        3. End of conversation

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