<div dir="ltr"><div dir="ltr">Hi All,<div><br></div><div>A new copy of the ruleset was just pushed which contains an update to 2820288 which reflects the proper negation.</div><div><br></div><div>Please let us know if you continue to see problems, and thank you to all who reached out to let us know what you're seeing.</div><div><br></div><div>Best,</div><div><br></div><div>Jack</div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Feb 12, 2020 at 8:53 AM <<a href="mailto:elhijo@0lim.net">elhijo@0lim.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u><div><div style="font-family:arial,sans-serif;font-size:13px">Hi Brad,<br><br>the last one was sent with my newly registered account <a href="mailto:elhijo@illum-mg.fr" target="_blank">elhijo@illum-mg.fr</a><br><br>There only was a text and an attachment with a json zeek logs file, I've tried to tar the json file but had same issue.<br><br>It have been sent from 83.167.32.54 around 16:30<br><br>Cheers,<br>David<br><br>February 12, 2020 4:44 PM, "Brad Woodberg" <<a href="mailto:bwoodberg@proofpoint.com?to=%22Brad%20Woodberg%22%20%3Cbwoodberg@proofpoint.com%3E" target="_blank">bwoodberg@proofpoint.com</a>> wrote:<br> <blockquote><div><div lang="EN-US"><div> <p>Hi David,</p> <p>I tested the portal and could not reproduce the issue, nor have we received any other reports. If you can provide the details of what you entered that would be helpful. I’ll let the team speak to the signature itself.</p> <div> <p><b><span style="font-size:12pt;font-family:Arial,sans-serif;color:rgb(29,14,0)">Brad Woodberg </span></b><span style="font-size:12pt;font-family:Arial,sans-serif;color:rgb(29,14,0)">l<b> </b>Group Product Manager - Emerging Threats, TAP Campaigns</span></p> <p><span style="font-size:12pt;font-family:Arial,sans-serif">Proofpoint, Inc.</span><span style="font-size:12pt;font-family:"MS Mincho""> </span></p> <p><span style="font-size:12pt;font-family:Arial,sans-serif">E: <a rel="external nofollow noopener noreferrer" href="mailto:bwoodberg@proofpoint.com" target="_blank"><span style="color:rgb(5,99,193)">bwoodberg@proofpoint.com</span></a></span></p> <p><a rel="external nofollow noopener noreferrer" href="http://www.proofpoint.com/" target="_blank"><span style="font-size:12pt;font-family:Arial,sans-serif;text-decoration:none"><img border="0" width="150" height="33" style="width: 1.5625in; height: 0.3437in; opacity: 1;" alt="id:image001.png@01D285E1.0101B2B0" src="cid:1703a2c03174cff311"></span></a></p> </div> <p><span style="font-size:12pt;font-family:Arial,sans-serif;color:rgb(15,107,150)">threat protection l compliance l archiving & governance l secure communication</span></p> <div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(181,196,223);padding:3pt 0in 0in"><p><b><span style="font-size:12pt;color:black">From: </span></b><span style="font-size:12pt;color:black">Emerging-sigs <<a rel="noopener noreferrer" href="mailto:emerging-sigs-bounces@lists.emergingthreats.net" target="_blank">emerging-sigs-bounces@lists.emergingthreats.net</a>> on behalf of "<a rel="noopener noreferrer" href="mailto:elhijo@0lim.net" target="_blank">elhijo@0lim.net</a>" <<a rel="noopener noreferrer" href="mailto:elhijo@0lim.net" target="_blank">elhijo@0lim.net</a>><br><b>Date: </b>Wednesday, February 12, 2020 at 10:39 AM<br><b>To: </b>"<a rel="noopener noreferrer" href="mailto:emerging-sigs@emergingthreats.net" target="_blank">emerging-sigs@emergingthreats.net</a>" <<a rel="noopener noreferrer" href="mailto:emerging-sigs@emergingthreats.net" target="_blank">emerging-sigs@emergingthreats.net</a>><br><b>Subject: </b>Re: [Emerging-Sigs] KBot C2 Sig</span></p></div> <div></div> <div> <p><span style="font-size:10pt;font-family:Arial,sans-serif">Hi,<br><br>was trying to send you same issue through ET feedback webpage but I get bad gateway error every time I submit my request.</span><br><br><span style="font-family:Arial,sans-serif">sid:2820288</span><br><br><span style="font-size:10pt;font-family:Arial,sans-serif">All alerts linked to i[1234]<a href="http://4.c.eset.com" target="_blank">4.c.eset.com</a><br><br>Cheers,<br><br>David<br><br><br>February 12, 2020 4:30 PM, "Stuart Gonzalez" <<a rel="external nofollow noopener noreferrer" href="mailto:stu@perchsecurity.com?to=%22Stuart%20Gonzalez%22%20%3cstu@perchsecurity.com%3e" target="_blank">stu@perchsecurity.com</a>> wrote:</span></p> <blockquote style="margin-top:5pt;margin-bottom:5pt"><div><div> <div> <p><span style="font-family:Arial,sans-serif">Hi Team,</span></p> <p><span style="font-family:Arial,sans-serif">Looking through this sig and wondering if the content match for “.<a href="http://eset.com" target="_blank">eset.com</a>” should have been negated. I reviewed the references, as well as, other malware repos for this malware and found no indication C2 traffic destined for eset subdomains. </span></p> <p><span style="font-family:Arial,sans-serif">alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ETPRO TROJAN Bolek/Kbot CnC Checkin"; flow:established,to_server; urilen:1; content:"POST"; http_method; pcre:"/^[\x20-\x7e\r\n]{0,20}[^\x20-\x7e\r\n]/Ps"; content:".<a href="http://eset.com" target="_blank">eset.com</a>"; http_host; isdataat:!1,relative; http_header_names; content:"|0d 0a|Host|0d 0a|Content-Length|0d 0a|Connection|0d 0a|"; depth:36; fast_pattern; content:!"Accept"; content:!"Referer"; metadata: former_category MALWARE; reference:md5,24a497e3993289168455f12d11f0430f; reference:md5,2d7ce4c681bdbddf4ab2740f5fb589dc; classtype:trojan-activity; sid:2820288; rev:5; metadata:created_at 2016_05_20, updated_at 2020_02_11;)</span></p> <p><span style="font-family:Arial,sans-serif"><a rel="external nofollow noopener noreferrer" href="https://urldefense.com/v3/__https:/securelist.com/kbot-sometimes-they-come-back/96157/__;!!ORgEfCBsr282Fw!9MK6rbUaP6N_DoD0PDZLpfUpt2Lmz1p-mJU6CqeIrxM0tSLw7aXLrZoBs2afswfOFXJM%24" target="_blank"><span style="color:rgb(5,99,193)">https://securelist.com/kbot-sometimes-they-come-back/96157/</span></a></span></p> <p><span style="font-family:Arial,sans-serif"><a rel="external nofollow noopener noreferrer" href="https://urldefense.com/v3/__https:/www.virustotal.com/gui/file/406a4fcb391cc8098d1a6578e2609c21f0f59ca2386f926e3438c57e4549c966/behavior/VirusTotal*20Cuckoofork__;JQ!!ORgEfCBsr282Fw!9MK6rbUaP6N_DoD0PDZLpfUpt2Lmz1p-mJU6CqeIrxM0tSLw7aXLrZoBs2afs0dE7LiA%24" target="_blank"><span style="color:rgb(5,99,193)">https://www.virustotal.com/gui/file/406a4fcb391cc8098d1a6578e2609c21f0f59ca2386f926e3438c57e4549c966/behavior/VirusTotal%20Cuckoofork</span></a></span></p> </div> <table border="0" cellpadding="0" width="450" style="width:337.5pt"><tbody> <tr> <td width="90" style="width:67.5pt;padding:0in"><p style="margin-right:7.5pt;margin-bottom:3pt;margin-left:0in;line-height:9pt"><span style="font-size:7.5pt;font-family:Helvetica"><a rel="external nofollow noopener noreferrer" href="https://urldefense.com/v3/__http:/perchsecurity.com__;!!ORgEfCBsr282Fw!9MK6rbUaP6N_DoD0PDZLpfUpt2Lmz1p-mJU6CqeIrxM0tSLw7aXLrZoBs2afs0rDxOMx%24" target="_blank"><span style="color:windowtext;text-decoration:none"><span style="color:rgb(5,99,193)"><img border="0" width="80" height="80" style="width: 0.8333in; height: 0.8333in;" alt="PERCH"></span></span></a></span></p></td> <td width="370" nowrap style="width:277.5pt;padding:0in"> <p style="margin-bottom:3pt;line-height:9pt"><b><span style="font-size:7.5pt;font-family:Helvetica;color:rgb(92,92,92)">Stuart Gonzalez</span></b><span style="font-size:7.5pt;font-family:Helvetica;color:rgb(33,33,33)"> / </span><span style="font-size:7.5pt;font-family:Helvetica;color:rgb(92,92,92)">Chief Bot Officer</span><br><span style="font-size:7.5pt;font-family:Helvetica;color:rgb(33,33,33)"><a rel="external nofollow noopener noreferrer" href="mailto:stu@perchsecurity.com" target="_blank"><span style="color:rgb(174,174,174);text-decoration:none">stu@perchsecurity.com</span></a> / </span><span style="font-size:7.5pt;font-family:Helvetica;color:rgb(92,92,92)">713.591.1602</span></p> <p style="margin-bottom:3pt"><b><span style="font-size:7.5pt;font-family:Helvetica;color:rgb(92,92,92)">PERCH</span></b><br><span style="font-size:7.5pt;font-family:Helvetica"><a rel="external nofollow noopener noreferrer" href="https://urldefense.com/v3/__https:/perchsecurity.com__;!!ORgEfCBsr282Fw!9MK6rbUaP6N_DoD0PDZLpfUpt2Lmz1p-mJU6CqeIrxM0tSLw7aXLrZoBs2afs-VGCy0A%24" target="_blank"><span style="color:rgb(174,174,174);text-decoration:none">perchsecurity.com</span></a> <span style="color:rgb(74,21,139)">|</span> <a rel="external nofollow noopener noreferrer" href="https://urldefense.com/v3/__http:/www.perchsecurity.com/blog__;!!ORgEfCBsr282Fw!9MK6rbUaP6N_DoD0PDZLpfUpt2Lmz1p-mJU6CqeIrxM0tSLw7aXLrZoBs2afs0ySdime%24" target="_blank"> <span style="color:rgb(174,174,174);text-decoration:none">Perch Blog</span></a> <span style="color:rgb(74,21,139)"> |</span> <a rel="external nofollow noopener noreferrer" href="mailto:help@perchsecurity.com" target="_blank"><span style="color:rgb(174,174,174);text-decoration:none">Product Support</span></a> <span style="color:rgb(74,21,139)">|</span> <a rel="external nofollow noopener noreferrer" href="mailto:soc@perchsecurity.com" target="_blank"> <span style="color:rgb(174,174,174);text-decoration:none">SOC Operations</span></a></span></p> <p style="line-height:0%"><span style="font-size:1pt;font-family:Helvetica"><a rel="external nofollow noopener noreferrer" href="https://urldefense.com/v3/__https:/twitter.com/perchsecurity__;!!ORgEfCBsr282Fw!9MK6rbUaP6N_DoD0PDZLpfUpt2Lmz1p-mJU6CqeIrxM0tSLw7aXLrZoBs2afs2F_T-3c%24" target="_blank"><span style="color:windowtext;text-decoration:none"><span style="color:rgb(5,99,193)"><img border="0" width="16" height="16" style="width: 0.1666in; height: 0.1666in;" alt="Twitter"></span></span></a><img border="0" width="2" style="width: 0.0208in;" alt="https://s3.amazonaws.com/htmlsig-assets/spacer.gif"><a rel="external nofollow noopener noreferrer" href="https://urldefense.com/v3/__https:/www.linkedin.com/company/perchsecurity/__;!!ORgEfCBsr282Fw!9MK6rbUaP6N_DoD0PDZLpfUpt2Lmz1p-mJU6CqeIrxM0tSLw7aXLrZoBs2afs08s1wqf%24" target="_blank"><span style="color:windowtext;text-decoration:none"><span style="color:rgb(5,99,193)"><img border="0" width="16" height="16" style="width: 0.1666in; height: 0.1666in;" alt="LinkedIn"></span></span></a><img border="0" width="2" style="width: 0.0208in;" alt="https://s3.amazonaws.com/htmlsig-assets/spacer.gif"><a rel="external nofollow noopener noreferrer" href="https://urldefense.com/v3/__https:/perchsecurity.com/perch-news/index.xml__;!!ORgEfCBsr282Fw!9MK6rbUaP6N_DoD0PDZLpfUpt2Lmz1p-mJU6CqeIrxM0tSLw7aXLrZoBs2afs_dNq7tG%24" target="_blank"><span style="color:windowtext;text-decoration:none"><span style="color:rgb(5,99,193)"><img border="0" width="16" height="16" style="width: 0.1666in; height: 0.1666in;" alt="Subscribe to our blog!"></span></span></a></span></p> </td> </tr> <tr><td colspan="2" style="padding:0in"><p style="line-height:9pt"><span style="font-size:7pt;font-family:Helvetica;color:rgb(92,92,92)">This e-mail message may contain confidential or legally privileged information and is intended only for the use of the intended recipient(s). Any unauthorized disclosure, dissemination, distribution, copying or the taking of any action in reliance on the information herein is prohibited. E-mails are not secure and cannot be guaranteed to be error free as they can be intercepted, amended, or contain viruses. Anyone who communicates with us by e-mail is deemed to have accepted these risks. Perch Security is not responsible for errors or omissions in this message and denies any responsibility for any damage arising from the use of e-mail. Any opinion and other statement contained in this message and any attachment are solely those of the author and do not necessarily represent those of the company.</span></p></td></tr> </tbody></table> </div></div></blockquote> <p><br><br> </p> </div> </div></div></div></blockquote> <br><br><u></u><u></u> </div></div>
_______________________________________________<br>
Emerging-sigs mailing list<br>
<a href="mailto:Emerging-sigs@lists.emergingthreats.net" target="_blank">Emerging-sigs@lists.emergingthreats.net</a><br>
<a href="https://lists.emergingthreats.net/mailman/listinfo/emerging-sigs" rel="noreferrer" target="_blank">https://lists.emergingthreats.net/mailman/listinfo/emerging-sigs</a><br>
<br>
Support Emerging Threats! Subscribe to Emerging Threats Pro <a href="http://www.emergingthreats.net" rel="noreferrer" target="_blank">http://www.emergingthreats.net</a><br>
<br>
</blockquote></div>