alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE User-Agent (ms)"; flow:to_server,established; content:"ms"; http_user_agent; depth:2; isdataat:!1,relative; threshold: type limit, count 3, seconds 300, track by_src; reference:url,doc.emergingthreats.net/bin/view/Main/2003497; classtype:trojan-activity; sid:2003497; rev:15; metadata:created_at 2010_07_30, former_category ADWARE_PUP, updated_at 2020_10_17;)
Added 2020-10-19 19:37:36 UTC
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE User-Agent (ms)"; flow:to_server,established; content:"ms"; http_user_agent; depth:2; isdataat:!1,relative; threshold: type limit, count 3, seconds 300, track by_src; reference:url,doc.emergingthreats.net/bin/view/Main/2003497; classtype:trojan-activity; sid:2003497; rev:15; metadata:created_at 2010_07_30, former_category ADWARE_PUP, updated_at 2019_10_11;)
Added 2020-08-05 19:01:51 UTC
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE User-Agent (ms)"; flow:to_server,established; content:"ms"; http_user_agent; depth:2; isdataat:!1,relative; threshold: type limit, count 3, seconds 300, track by_src; metadata: former_category ADWARE_PUP; reference:url,doc.emergingthreats.net/bin/view/Main/2003497; classtype:trojan-activity; sid:2003497; rev:15; metadata:created_at 2010_07_30, updated_at 2019_10_11;)
Added 2019-10-11 19:56:19 UTC
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE User-Agent (ms)"; flow:to_server,established; content:"User-Agent|3a| ms|0d 0a|"; http_header; threshold: type limit, count 3, seconds 300, track by_src; metadata: former_category ADWARE_PUP; reference:url,doc.emergingthreats.net/bin/view/Main/2003497; classtype:trojan-activity; sid:2003497; rev:14; metadata:created_at 2010_07_30, updated_at 2010_07_30;)
Added 2019-09-26 19:54:53 UTC
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE User-Agent (ms)"; flow:to_server,established; content:"User-Agent|3a| ms|0d 0a|"; http_header; threshold: type limit, count 3, seconds 300, track by_src; metadata: former_category MALWARE; reference:url,doc.emergingthreats.net/bin/view/Main/2003497; classtype:trojan-activity; sid:2003497; rev:14; metadata:created_at 2010_07_30, updated_at 2010_07_30;)
Added 2019-08-15 20:32:51 UTC
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE User-Agent (ms)"; flow:to_server,established; content:"User-Agent|3a| ms|0d 0a|"; http_header; threshold: type limit, count 3, seconds 300, track by_src; reference:url,doc.emergingthreats.net/bin/view/Main/2003497; classtype:trojan-activity; sid:2003497; rev:13; metadata:created_at 2010_07_30, updated_at 2010_07_30;)
Added 2018-09-13 19:38:51 UTC
Added 2018-09-13 17:53:17 UTC
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE User-Agent (ms)"; flow:to_server,established; content:"User-Agent|3a| ms|0d 0a|"; http_header; threshold: type limit, count 3, seconds 300, track by_src; reference:url,doc.emergingthreats.net/bin/view/Main/2003497; classtype:trojan-activity; sid:2003497; rev:13; metadata:created_at 2010_07_30, updated_at 2010_07_30;)
Added 2017-08-07 20:56:45 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE User-Agent (ms)"; flow:to_server,established; content:"User-Agent|3a| ms|0d 0a|"; http_header; threshold: type limit, count 3, seconds 300, track by_src; reference:url,doc.emergingthreats.net/bin/view/Main/2003497; classtype:trojan-activity; sid:2003497; rev:11;)
Added 2011-12-15 18:09:18 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS Suspicious User-Agent (ms)"; flow:to_server,established; content:"User-Agent|3a| ms|0d 0a|"; http_header; threshold: type limit, count 3, seconds 300, track by_src; reference:url,doc.emergingthreats.net/bin/view/Main/2003497; classtype:trojan-activity; sid:2003497; rev:11;)
Added 2011-10-12 19:13:35 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS Suspicious User-Agent (ms)"; flow:to_server,established; content:"User-Agent|3a| ms|0d 0a|"; http_header; threshold: type limit, count 3, seconds 300, track by_src; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2003497; sid:2003497; rev:11;)
Added 2011-09-14 22:26:34 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS Suspicious User-Agent (ms)"; flow:to_server,established; content:"User-Agent|3a| ms|0d 0a|"; http_header; threshold: type limit, count 3, seconds 300, track by_src; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2003497; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/USER_AGENTS/USER_AGENTS_Suspicious; sid:2003497; rev:11;)
Added 2011-05-25 19:28:46 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS Suspicious User-Agent (ms)"; flow:to_server,established; content:"User-Agent|3a| ms|0d 0a|"; http_header; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2003497; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/USER_AGENTS/USER_AGENTS_Suspicious; sid:2003497; rev:9;)
Added 2011-02-04 17:22:30 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS Suspicious User-Agent (ms)"; flow:to_server,established; content:"User-Agent\: ms|0d 0a|"; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2003497; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/USER_AGENTS/USER_AGENTS_Suspicious; sid:2003497; rev:7;)
Added 2009-10-19 09:15:43 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS Suspicious User-Agent (ms)"; flow:to_server,established; content:"User-Agent\: ms|0d 0a|"; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2003497; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/USER_AGENTS/USER_AGENTS_Suspicious; sid:2003497; rev:7;)
Added 2009-10-19 09:15:43 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent (ms)"; flow:to_server,established; content:"User-Agent\: ms|0d 0a|"; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2003497; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/MALWARE/MALWARE_USER_Agents; sid:2003497; rev:6;)
Added 2009-02-25 12:27:34 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent (ms)"; flow:to_server,established; content:"User-Agent\: ms|0d 0a|"; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2003497; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/MALWARE/MALWARE_USER_Agents; sid:2003497; rev:6;)
Added 2009-02-25 12:27:34 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent (ms)"; flow:to_server,established; content:"User-Agent\: ms"; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2003497; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/MALWARE/MALWARE_USER_Agents; sid:2003497; rev:5;)
Added 2009-02-09 21:30:24 UTC
This signatures triggers on:
User-Agent: msnbot/1.1 (+http://search.msn.com/msnbot.htm)
Notrhing suspicious about that...
--
DavidSchweikert - 25 Feb 2009
Added a trailing |0d 0a| to prevent those false positives. Thanks David!
--
MattJonkman - 25 Feb 2009
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent (ms)"; flow:to_server,established; content:"User-Agent\: ms"; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2003497; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/MALWARE/MALWARE_USER_Agents; sid:2003497; rev:5;)
Added 2009-02-09 21:30:24 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent (ms)"; flow:to_server,established; content:"User-Agent\: ms"; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2003497; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/MALWARE/MALWARE_USER_Agents; sid:2003497; rev:5;)
Added 2009-02-09 21:29:25 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent (ms)"; flow:to_server,established; content:"User-Agent\: ms"; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2003497; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/MALWARE/MALWARE_USER_Agents; sid:2003497; rev:5;)
Added 2009-02-09 21:29:25 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent (ms)"; flow:to_server,established; content:"User-Agent\: ms"; classtype:trojan-activity; sid:2003497; rev:4;)
Added 2008-07-13 23:00:20 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent (ms)"; flow:to_server,established; content:"User-Agent\: ms"; classtype:trojan-activity; sid:2003497; rev:4;)
Added 2008-07-13 23:00:20 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent (ms)"; flow:to_server,established; content:"User-Agent\: ms"; classtype:trojan-activity; sid:2003497; rev:4;)
Added 2008-07-13 22:59:10 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent (ms)"; flow:to_server,established; content:"User-Agent\: ms"; classtype:trojan-activity; sid:2003497; rev:4;)
Added 2008-07-13 22:59:10 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent (ms)"; flow:to_server,established; content:"User-Agent\: ms"; nocase; classtype:trojan-activity; sid:2003497; rev:3;)
Added 2008-07-12 10:00:22 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent (ms)"; flow:to_server,established; content:"User-Agent\: ms"; nocase; classtype:trojan-activity; sid:2003497; rev:3;)
Added 2008-07-12 10:00:22 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE 180Solutions Related Spyware User-Agent (msbb)"; flow:to_server,established; content:"User-Agent\: msbb|0d 0a|"; nocase; classtype:trojan-activity; reference:url,www.auditmypc.com/process/msbb.asp; sid:2003497; rev:2;)
Added 2008-01-28 17:24:21 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE 180Solutions Related Spyware User-Agent (msbb)"; flow:to_server,established; content:"User-Agent\: msbb|0d 0a|"; nocase; classtype:trojan-activity; reference:url,www.auditmypc.com/process/msbb.asp; sid:2003497; rev:2;)
Added 2008-01-28 17:24:21 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"BLEEDING-EDGE MALWARE 180Solutions Related Spyware User-Agent (msbb)"; flow:to_server,established; content:"User-Agent\: msbb|0d 0a|"; nocase; classtype:trojan-activity; reference:url,www.auditmypc.com/process/msbb.asp; sid:2003497; rev:1;)
Added 2007-03-16 13:45:18 UTC