#alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED W32/Rbot User-Agent (tiehttp)"; flow:established,to_server; content:"User-Agent|3A 20|tiehttp"; http_header; classtype:trojan-activity; sid:2013449; rev:3; metadata:created_at 2011_08_22, updated_at 2011_08_22;)

Added 2017-08-07 21:06:45 UTC

#alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET DELETED W32/Rbot User-Agent (tiehttp)"; flow:established,to_server; content:"User-Agent|3A 20|tiehttp"; http_header; classtype:trojan-activity; sid:2013449; rev:3;)

Added 2011-10-12 19:36:53 UTC

#alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET DELETED W32/Rbot User-Agent (tiehttp)"; flow:established,to_server; content:"User-Agent|3A 20|tiehttp"; http_header; classtype:trojan-activity; sid:2013449; rev:3;)

Added 2011-09-27 22:24:17 UTC

tiehttp appears to be part of Delphi and the user agent is used by a number of legit apps.

-- RussellFulton - 03 Oct 2011