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<div>Hi Alexis,</div>
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<div>There is probably hundreds of rules in ET Open for Ransomware, and probably thousands in ETPro to detect ransomware (and many many other types of malware / malicious activity.) We typically write a rule for each unique fingerprint we can assign to a given
malware/campaign/vector. Often times, malware will trigger not only on the specific signatures, but also on other indicators of suspicious activity. </div>
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<div>Currently, we’re releasing about 15:1 ETPro : ET Open signatures. Any signatures submitted by the public or signatures that we write based upon public research goes into the Open ruleset which we curate/QA/package as a service to the community. Any signatures
that we develop based upon our own research / our own IP would go into ETPro (for both Snort and Suricata.)</div>
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<div>If you have a specific question around the rules/ruleset we’ll be happy to address it.</div>
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<div>Best Regards,</div>
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<p class="MsoNormal" style="text-autospace:none"><b><span style="font-family:Arial;color:#1D0E00">Brad Woodberg
</span></b><span style="font-family:Arial;color:#1D0E00">l<b> </b>Group Product Manager, ETPro, Security Tools</span><span style="font-size:16.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:Arial">Proofpoint, Inc.</span><span style="font-family: 'ＭＳ 明朝', 'MS Mincho';">
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<p class="MsoNormal" style="text-autospace:none"><span style="font-family:Arial">E:
<a href="mailto:bwoodberg@proofpoint.com">bwoodberg@proofpoint.com</a><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><a href="http://www.proofpoint.com/"><span style="font-family:Arial;color:blue;text-decoration:none"><img border="0" width="150" height="33" id="Picture_x005f_x005f_x005f_x0020_1" src="cid:6A61D1A2-F6A3-4D04-9D55-A8B8281ABB0F" alt="id:image001.png@01D285E1.0101B2B0"></span></a><span style="font-size:16.0pt"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:Arial;color:#0F6B96">threat protection l compliance l archiving & governance l secure communication</span><o:p></o:p></p>
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<span style="font-weight:bold">From: </span>Oisf-users <<a href="mailto:oisf-users-bounces@lists.openinfosecfoundation.org">oisf-users-bounces@lists.openinfosecfoundation.org</a>> on behalf of Alexis Fredes Hadad <<a href="mailto:amfh2408@gmail.com">amfh2408@gmail.com</a>><br>
<span style="font-weight:bold">Date: </span>Thursday, June 29, 2017 at 8:42 PM<br>
<span style="font-weight:bold">To: </span>"<a href="mailto:oisf-users@lists.openinfosecfoundation.org">oisf-users@lists.openinfosecfoundation.org</a>" <<a href="mailto:oisf-users@lists.openinfosecfoundation.org">oisf-users@lists.openinfosecfoundation.org</a>><br>
<span style="font-weight:bold">Subject: </span>[Oisf-users] Ransomware detection<br>
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<div>Hello everyone!<br>
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I want to know if there is any rule for ransomware detection in Suricata. I know that Suricata is not the more appropiate tool for that kind of malware but I was investigating how to do a rule with pcre. Anyone knows if exist a rule for that? Or a rule set
which contain that? At present I am using the free version of Emerging Threats and it has a file of rules for malware but I couldn't find nothing related to ransomware.<br>
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Thanks,<br>
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Alexis</div>
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