alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE
YourSiteBar? User-Agent (istsvc)"; flow: to_server,established; content:"istsvc"; nocase; http_user_agent; depth:6; isdataat:!1,relative; reference:url,www.ysbweb.com; reference:url,doc.emergingthreats.net/2001699; classtype:trojan-activity; sid:2001699; rev:263; metadata:created_at 2010_07_30, former_category ADWARE_PUP, updated_at 2020_10_17;)
Added 2020-10-19 19:37:35 UTC
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE
YourSiteBar? User-Agent (istsvc)"; flow: to_server,established; content:"istsvc"; nocase; http_user_agent; depth:6; isdataat:!1,relative; reference:url,www.ysbweb.com; reference:url,doc.emergingthreats.net/2001699; classtype:trojan-activity; sid:2001699; rev:263; metadata:created_at 2010_07_30, former_category ADWARE_PUP, updated_at 2019_10_11;)
Added 2020-08-05 19:01:33 UTC
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE
YourSiteBar? User-Agent (istsvc)"; flow: to_server,established; content:"istsvc"; nocase; http_user_agent; depth:6; isdataat:!1,relative; metadata: former_category ADWARE_PUP; reference:url,www.ysbweb.com; reference:url,doc.emergingthreats.net/2001699; classtype:trojan-activity; sid:2001699; rev:263; metadata:created_at 2010_07_30, updated_at 2019_10_11;)
Added 2019-10-11 19:56:18 UTC
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE
YourSiteBar? User-Agent (istsvc)"; flow: to_server,established; content:"User-Agent|3a| istsvc|0d 0a|"; nocase; http_header; metadata: former_category ADWARE_PUP; reference:url,www.ysbweb.com; reference:url,doc.emergingthreats.net/2001699; classtype:trojan-activity; sid:2001699; rev:262; metadata:created_at 2010_07_30, updated_at 2010_07_30;)
Added 2019-09-26 19:54:40 UTC
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE
YourSiteBar? User-Agent (istsvc)"; flow: to_server,established; content:"User-Agent|3a| istsvc|0d 0a|"; nocase; http_header; metadata: former_category MALWARE; reference:url,www.ysbweb.com; reference:url,doc.emergingthreats.net/2001699; classtype:trojan-activity; sid:2001699; rev:262; metadata:created_at 2010_07_30, updated_at 2010_07_30;)
Added 2019-08-15 20:32:36 UTC
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE
YourSiteBar? User-Agent (istsvc)"; flow: to_server,established; content:"User-Agent|3a| istsvc|0d 0a|"; nocase; http_header; reference:url,www.ysbweb.com; reference:url,doc.emergingthreats.net/2001699; classtype:trojan-activity; sid:2001699; rev:261; metadata:created_at 2010_07_30, updated_at 2010_07_30;)
Added 2018-09-13 19:37:35 UTC
Added 2018-09-13 17:52:36 UTC
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE
YourSiteBar? User-Agent (istsvc)"; flow: to_server,established; content:"User-Agent|3a| istsvc|0d 0a|"; nocase; http_header; reference:url,www.ysbweb.com; reference:url,doc.emergingthreats.net/2001699; classtype:trojan-activity; sid:2001699; rev:261; metadata:created_at 2010_07_30, updated_at 2010_07_30;)
Added 2017-08-07 20:55:38 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE
YourSiteBar? User-Agent (istsvc)"; flow: to_server,established; content:"User-Agent|3a| istsvc|0d 0a|"; nocase; http_header; reference:url,www.ysbweb.com; reference:url,doc.emergingthreats.net/2001699; classtype:trojan-activity; sid:2001699; rev:259;)
Added 2011-12-15 18:09:00 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS
YourSiteBar? Activity"; flow: to_server,established; content:"User-Agent|3a| istsvc|0d 0a|"; nocase; http_header; reference:url,www.ysbweb.com; reference:url,doc.emergingthreats.net/2001699; classtype:trojan-activity; sid:2001699; rev:259;)
Added 2011-10-12 19:10:49 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS
YourSiteBar? Activity"; flow: to_server,established; content:"User-Agent|3a| istsvc|0d 0a|"; nocase; http_header; classtype: trojan-activity; reference:url,www.ysbweb.com; reference:url,doc.emergingthreats.net/2001699; sid:2001699; rev:259;)
Added 2011-09-14 21:03:20 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS
YourSiteBar? Activity"; flow: to_server,established; content:"User-Agent|3a| istsvc|0d 0a|"; nocase; http_header; classtype: trojan-activity; reference:url,www.ysbweb.com; reference:url,doc.emergingthreats.net/2001699; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/USER_AGENTS/USER_AGENTS_ISearch; sid:2001699; rev:259;)
Added 2011-02-04 17:21:34 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS
YourSiteBar? Activity"; flow: to_server,established; content:"User-Agent|3a| istsvc|0d 0a|"; nocase; reference:url,www.ysbweb.com; classtype: trojan-activity; reference:url,doc.emergingthreats.net/2001699; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/USER_AGENTS/USER_AGENTS_ISearch; sid:2001699; rev:258;)
Added 2010-07-29 22:05:01 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS
YourSiteBar? Activity"; flow: to_server,established; content:"User-Agent|3a| istsvc|0d 0a|"; nocase; reference:url,www.ysbweb.com; classtype: trojan-activity; reference:url,doc.emergingthreats.net/2001699; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/USER_AGENTS/USER_AGENTS_ISearch; sid:2001699; rev:258;)
Added 2010-07-29 22:05:01 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS
YourSiteBar? Activity"; flow: to_server,established; content:"User-Agent\: istsvc|0d 0a|"; nocase; reference:url,www.ysbweb.com; classtype: trojan-activity; reference:url,doc.emergingthreats.net/2001699; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/USER_AGENTS/USER_AGENTS_ISearch; sid:2001699; rev:257;)
Added 2010-06-28 22:47:02 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS
YourSiteBar? Activity"; flow: to_server,established; content:"User-Agent\: istsvc|0d 0a|"; nocase; reference:url,www.ysbweb.com; classtype: trojan-activity; reference:url,doc.emergingthreats.net/2001699; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/USER_AGENTS/USER_AGENTS_ISearch; sid:2001699; rev:257;)
Added 2010-06-28 22:47:02 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS
YourSiteBar? Activity"; flow: to_server,established; content:"User-Agent\: istsvc|0d 0a|"; nocase; reference:url,www.ysbweb.com; classtype: trojan-activity; reference:url,doc.emergingthreats.net/2001699; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/USER_AGENTS/USER_AGENTS_ISearch; sid: 2001699; rev:257;)
Added 2009-11-25 11:39:02 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET USER_AGENTS
YourSiteBar? Activity"; flow: to_server,established; content:"User-Agent\: istsvc|0d 0a|"; nocase; reference:url,www.ysbweb.com; classtype: trojan-activity; reference:url,doc.emergingthreats.net/2001699; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/USER_AGENTS/USER_AGENTS_ISearch; sid: 2001699; rev:257;)
Added 2009-11-25 11:39:02 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE
YourSiteBar? Activity"; flow: to_server,established; content:"User-Agent\: istsvc|0d 0a|"; nocase; reference:url,www.ysbweb.com; classtype: trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2001699; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/MALWARE/MALWARE_USER_Agents; sid: 2001699; rev:25;)
Added 2009-02-09 21:30:23 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE
YourSiteBar? Activity"; flow: to_server,established; content:"User-Agent\: istsvc|0d 0a|"; nocase; reference:url,www.ysbweb.com; classtype: trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2001699; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/MALWARE/MALWARE_USER_Agents; sid: 2001699; rev:25;)
Added 2009-02-09 21:30:23 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE
YourSiteBar? Activity"; flow: to_server,established; content:"User-Agent\: istsvc|0d 0a|"; nocase; reference:url,www.ysbweb.com; classtype: trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2001699; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/MALWARE/MALWARE_USER_Agents; sid: 2001699; rev:25;)
Added 2009-02-09 21:29:24 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE
YourSiteBar? Activity"; flow: to_server,established; content:"User-Agent\: istsvc|0d 0a|"; nocase; reference:url,www.ysbweb.com; classtype: trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/2001699; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/MALWARE/MALWARE_USER_Agents; sid: 2001699; rev:25;)
Added 2009-02-09 21:29:24 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE
YourSiteBar? Activity"; flow: to_server,established; content:"User-Agent\: istsvc|0d 0a|"; nocase; reference:url,www.ysbweb.com; classtype: trojan-activity; sid: 2001699; rev:24;)
Added 2008-02-01 14:32:22 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE
YourSiteBar? Activity"; flow: to_server,established; content:"User-Agent\: istsvc|0d 0a|"; nocase; reference:url,www.ysbweb.com; classtype: trojan-activity; sid: 2001699; rev:24;)
Added 2008-02-01 14:32:22 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET Malware
YourSiteBar? Activity"; flow: to_server,established; content:"User-Agent\: istsvc|0d 0a|"; nocase; reference:url,www.ysbweb.com; classtype: trojan-activity; sid: 2001699; rev:13;)
Added 2008-01-28 17:24:20 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET Malware
YourSiteBar? Activity"; flow: to_server,established; content:"User-Agent\: istsvc|0d 0a|"; nocase; reference:url,www.ysbweb.com; classtype: trojan-activity; sid: 2001699; rev:13;)
Added 2008-01-28 17:24:20 UTC
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg: "BLEEDING-EDGE Malware
YourSiteBar? Activity"; flow: to_server,established; content:"User-Agent\: istsvc|0d 0a|"; nocase; reference:url,www.ysbweb.com; classtype: trojan-activity; sid: 2001699; rev:12;)
Added 2007-03-16 10:30:25 UTC
Very static UA string, no need for the pcre we usually do.
--
MattJonkman - 16 Mar 2007
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg: "BLEEDING-EDGE Malware
YourSiteBar? Activity"; flow: to_server,established; content:"User-Agent\:"; nocase; pcre:"/User-Agent\:[^\n]+istsvc/i"; reference:url,www.ysbweb.com; classtype: trojan-activity; sid: 2001699; rev:11;)