alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent outbound (bot)"; flow:to_server,established; content:"User-Agent|3a| bot/"; http_header; nocase; threshold: type limit, count 3, seconds 300, track by_src; metadata: former_category TROJAN; reference:url,doc.emergingthreats.net/bin/view/Main/2003622; classtype:trojan-activity; sid:2003622; rev:13; metadata:affected_product Any, attack_target Client_Endpoint, deployment Perimeter, tag User_Agent, signature_severity Major, created_at 2010_07_30, updated_at 2017_10_30;)

Added 2017-10-30 18:17:26 UTC

Please enter documentation, comments, false positives, or concerns with this signature. Press the Attach button below to add samples or Pcaps.

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alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent outbound (bot)"; flow:to_server,established; content:"User-Agent|3a| bot/"; http_header; nocase; threshold: type limit, count 3, seconds 300, track by_src; metadata: former_category TROJAN; reference:url,doc.emergingthreats.net/bin/view/Main/2003622; classtype:trojan-activity; sid:2003622; rev:13; metadata:affected_product Any, attack_target Client_Endpoint, deployment Perimeter, tag User_Agent, signature_severity Major, created_at 2010_07_30, updated_at 2017_10_30;)

Added 2017-10-30 16:39:34 UTC

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alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET TROJAN Suspicious User-Agent outbound (bot)"; flow:to_server,established; content:"User-Agent|3a| bot/"; http_header; nocase; threshold: type limit, count 3, seconds 300, track by_src; reference:url,doc.emergingthreats.net/bin/view/Main/2003622; classtype:trojan-activity; sid:2003622; rev:12; metadata:affected_product Any, attack_target Client_Endpoint, deployment Perimeter, tag User_Agent, signature_severity Major, created_at 2010_07_30, updated_at 2016_07_01;)

Added 2017-08-07 20:56:51 UTC

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alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET TROJAN Suspicious User-Agent outbound (bot)"; flow:to_server,established; content:"User-Agent|3a| bot/"; nocase; http_header; threshold: type limit, count 3, seconds 300, track by_src; reference:url,doc.emergingthreats.net/bin/view/Main/2003622; classtype:trojan-activity; sid:2003622; rev:11;)

Added 2011-10-12 19:13:48 UTC

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alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET TROJAN Suspicious User-Agent outbound (bot)"; flow:to_server,established; content:"User-Agent|3a| bot/"; nocase; http_header; threshold: type limit, count 3, seconds 300, track by_src; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2003622; sid:2003622; rev:11;)

Added 2011-09-14 22:26:47 UTC

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alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS Suspicious User-Agent outbound (bot)"; flow:to_server,established; content:"User-Agent|3a| bot/"; nocase; http_header; threshold: type limit, count 3, seconds 300, track by_src; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2003622; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/USER_AGENTS/USER_AGENTS_Suspicious; sid:2003622; rev:10;)

Added 2011-05-25 19:28:46 UTC

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alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS Suspicious User-Agent outbound (bot)"; flow:to_server,established; content:"User-Agent|3a| bot/"; nocase; http_header; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2003622; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/USER_AGENTS/USER_AGENTS_Suspicious; sid:2003622; rev:8;)

Added 2011-02-04 17:22:35 UTC

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alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS Suspicious User-Agent outbound (bot)"; flow:to_server,established; content:"User-Agent\: bot/"; nocase; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2003622; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/USER_AGENTS/USER_AGENTS_Suspicious; sid:2003622; rev:6;)

Added 2009-10-19 09:15:43 UTC

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alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS Suspicious User-Agent outbound (bot)"; flow:to_server,established; content:"User-Agent\: bot/"; nocase; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2003622; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/USER_AGENTS/USER_AGENTS_Suspicious; sid:2003622; rev:6;)

Added 2009-10-19 09:15:43 UTC

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alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent outbound (bot)"; flow:to_server,established; content:"User-Agent\: bot/"; nocase; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2003622; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/MALWARE/MALWARE_USER_Agents; sid:2003622; rev:4;)

Added 2009-02-09 21:30:24 UTC

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alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent outbound (bot)"; flow:to_server,established; content:"User-Agent\: bot/"; nocase; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2003622; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/MALWARE/MALWARE_USER_Agents; sid:2003622; rev:4;)

Added 2009-02-09 21:30:24 UTC

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alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent outbound (bot)"; flow:to_server,established; content:"User-Agent\: bot/"; nocase; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2003622; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/MALWARE/MALWARE_USER_Agents; sid:2003622; rev:4;)

Added 2009-02-09 21:29:25 UTC

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alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent outbound (bot)"; flow:to_server,established; content:"User-Agent\: bot/"; nocase; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2003622; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/MALWARE/MALWARE_USER_Agents; sid:2003622; rev:4;)

Added 2009-02-09 21:29:25 UTC

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alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent outbound (bot)"; flow:to_server,established; content:"User-Agent\: bot/"; nocase; classtype:trojan-activity; sid:2003622; rev:3;)

Added 2008-05-18 19:52:12 UTC

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alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent outbound (bot)"; flow:to_server,established; content:"User-Agent\: bot/"; nocase; classtype:trojan-activity; sid:2003622; rev:3;)

Added 2008-05-18 19:52:12 UTC

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alert tcp any any -> any $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent (bot)"; flow:to_server,established; content:"User-Agent\: bot/"; nocase; classtype:trojan-activity; sid:2003622; rev:2;)

Added 2008-01-28 17:24:21 UTC

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alert tcp any any -> any $HTTP_PORTS (msg:"ET MALWARE Suspicious User-Agent (bot)"; flow:to_server,established; content:"User-Agent\: bot/"; nocase; classtype:trojan-activity; sid:2003622; rev:2;)

Added 2008-01-28 17:24:21 UTC

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alert tcp any any -> any $HTTP_PORTS (msg:"BLEEDING-EDGE MALWARE Suspicious User-Agent (bot)"; flow:to_server,established; content:"User-Agent\: bot/"; nocase; classtype:trojan-activity; sid:2003622; rev:1;)

Added 2007-04-30 09:15:19 UTC

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