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

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

---

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;)

---

---