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2002087
(2007-03-12,
MattJonkman
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<h2> alert tcp !$HOME_NET any -> $HOME_NET 25 (msg:"ET POLICY Inbound Frequent Emails - Possible Spambot Inbound"; flow:established; content:"mail from|3a|"; nocase; threshold: type threshold, track by_src, count 10, seconds 60; reference:url,doc.emergingthreats.net/2002087; classtype:misc-activity; sid:2002087; rev:10; metadata:created_at 2010_07_30, updated_at 2010_07_30;) </h2> Added 2018-09-13 19:37:45 UTC %COMMENT{type="threadmode" default="Please enter documentation, comments, false positives, or concerns with this signature. Press the Attach button below to add samples or Pcaps." button="Add to Documentation" }% <hr> <h2> </h2> Added 2018-09-13 17:52:41 UTC <hr> <h2> alert tcp !$HOME_NET any -> $HOME_NET 25 (msg:"ET POLICY Inbound Frequent Emails - Possible Spambot Inbound"; flow:established; content:"mail from|3a|"; nocase; threshold: type threshold, track by_src, count 10, seconds 60; reference:url,doc.emergingthreats.net/2002087; classtype:misc-activity; sid:2002087; rev:10; metadata:created_at 2010_07_30, updated_at 2010_07_30;) </h2> Added 2017-08-07 20:55:48 UTC <hr> <h2> alert tcp !$HOME_NET any -> $HOME_NET 25 (msg:"ET POLICY Inbound Frequent Emails - Possible Spambot Inbound"; flow:established; content:"mail from|3a|"; nocase; threshold: type threshold, track by_src, count 10, seconds 60; reference:url,doc.emergingthreats.net/2002087; classtype:misc-activity; sid:2002087; rev:10;) </h2> Added 2011-10-12 19:11:15 UTC <hr> <h2> alert tcp !$HOME_NET any -> $HOME_NET 25 (msg:"ET POLICY Inbound Frequent Emails - Possible Spambot Inbound"; flow:established; content:"mail from|3a|"; nocase; threshold: type threshold, track by_src, count 10, seconds 60; classtype: misc-activity; reference:url,doc.emergingthreats.net/2002087; sid:2002087; rev:10;) </h2> Added 2011-09-14 21:14:05 UTC <hr> <h2> alert tcp !$HOME_NET any -> $HOME_NET 25 (msg:"ET POLICY Inbound Frequent Emails - Possible Spambot Inbound"; flow:established; content:"mail from|3a|"; nocase; threshold: type threshold, track by_src, count 10, seconds 60; classtype: misc-activity; reference:url,doc.emergingthreats.net/2002087; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/POLICY/POLICY_Unauthorized_SMTP; sid:2002087; rev:10;) </h2> Added 2011-02-04 17:21:42 UTC <hr> <h2> alert tcp !$HOME_NET any -> $HOME_NET 25 (msg: "ET POLICY Inbound Frequent Emails - Possible Spambot Inbound"; flow:established; content:"mail from\:"; nocase; threshold: type threshold, track by_src,count 10, seconds 60; classtype: misc-activity; reference:url,doc.emergingthreats.net/2002087; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/POLICY/POLICY_Unauthorized_SMTP; sid:2002087; rev:9;) </h2> Added 2010-06-28 22:46:59 UTC <hr> <h2> alert tcp !$HOME_NET any -> $HOME_NET 25 (msg: "ET POLICY Inbound Frequent Emails - Possible Spambot Inbound"; flow:established; content:"mail from\:"; nocase; threshold: type threshold, track by_src,count 10, seconds 60; classtype: misc-activity; reference:url,doc.emergingthreats.net/2002087; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/POLICY/POLICY_Unauthorized_SMTP; sid:2002087; rev:9;) </h2> Added 2010-06-28 22:46:59 UTC <hr> <h2> alert tcp !$HOME_NET any -> $HOME_NET 25 (msg: "ET POLICY Inbound Frequent Emails - Possible Spambot Inbound"; flow:established; content:"mail from\:"; nocase; threshold: type threshold, track by_src,count 10, seconds 60; classtype: misc-activity; reference:url,doc.emergingthreats.net/2002087; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/POLICY/POLICY_Unauthorized_SMTP; sid: 2002087; rev:9;) </h2> Added 2009-02-11 19:24:43 UTC <hr> <h2> alert tcp !$HOME_NET any -> $HOME_NET 25 (msg: "ET POLICY Inbound Frequent Emails - Possible Spambot Inbound"; flow:established; content:"mail from\:"; nocase; threshold: type threshold, track by_src,count 10, seconds 60; classtype: misc-activity; reference:url,doc.emergingthreats.net/2002087; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/POLICY/POLICY_Unauthorized_SMTP; sid: 2002087; rev:9;) </h2> Added 2009-02-11 19:24:43 UTC <hr> <h2> alert tcp !$HOME_NET any -> $HOME_NET 25 (msg: "ET POLICY Inbound Frequent Emails - Possible Spambot Inbound"; flow:established; content:"mail from\:"; nocase; threshold: type threshold, track by_src,count 10, seconds 60; classtype: misc-activity; sid: 2002087; rev:8;) </h2> Added 2008-01-31 18:48:10 UTC <hr> <h2> alert tcp !$HOME_NET any -> $HOME_NET 25 (msg: "ET POLICY Inbound Frequent Emails - Possible Spambot Inbound"; flow:established; content:"mail from\:"; nocase; threshold: type threshold, track by_src,count 10, seconds 60; classtype: misc-activity; sid: 2002087; rev:8;) </h2> Added 2008-01-31 18:48:10 UTC <hr> <h2> alert tcp !$HOME_NET any -> $HOME_NET 25 (msg: "BLEEDING-EDGE POLICY Inbound Frequent Emails - Possible Spambot Inbound"; flow:established; content:"mail from\:"; nocase; threshold: type threshold, track by_src,count 10, seconds 60; classtype: misc-activity; sid: 2002087; rev:7;) </h2> Added 2007-03-12 18:11:47 UTC <hr> <h2> alert tcp !$HOME_NET any -> $HOME_NET 25 (msg: "BLEEDING-EDGE POLICY Inbound Frequent Emails - Possible Spambot Inbound"; content:"mail from\:"; nocase; threshold: type threshold, track by_src,count 10, seconds 60; classtype: misc-activity; sid: 2002087; rev:6;) </h2> Added 2007-03-12 11:00:34 UTC I added the content:"mail from\:"; nocase; in place of flags S,12. Hopefully this will make the sig more meaningful. It'll only trip is mail is actually passing or being reasonably attempted. -- Main.MattJonkman - 12 Mar 2007 <hr> <h2> alert tcp !$HOME_NET any -> $HOME_NET 25 (msg: "BLEEDING-EDGE POLICY Inbound Frequent Emails - Possible Spambot Inbound"; flags: S,12; threshold: type threshold, track by_src,count 10, seconds 60; classtype: misc-activity; sid: 2002087; rev:5;) </h2> <hr> <hr>
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Topic revision: r2 - 2007-03-12
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MattJonkman
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