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


Topic revision: r3 - 2009-02-25 - MattJonkman
 
This site is powered by the TWiki collaboration platform Powered by Perl This site is powered by the TWiki collaboration platformCopyright © Emerging Threats