alert tcp $EXTERNAL_NET 81:90 -> $HOME_NET any (msg:"ET TROJAN Looked.P/Gamania/Delf #109/! Style CnC? Checkin Response from Server"; flow:established,from_server; dsize:6; content:"#1"; depth:2; content:"/!"; offset:4; pcre:"/^\x23\d\d\d\x2f\x21/"; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/Win32Looked; sid:2008220; rev:4;)

Added 2008-05-15 14:19:41 UTC

alert tcp $EXTERNAL_NET 81:90 -> $HOME_NET any (msg:"ET TROJAN Looked.P/Gamania/Delf #109/! Style CnC? Checkin Response from Server"; flow:established,from_server; dsize:6; content:"#1"; depth:2; content:"/!"; offset:4; pcre:"/^\x23\d\d\d\x2f\x21/"; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/Win32Looked; sid:2008220; rev:4;)

Added 2008-05-15 14:19:41 UTC

alert tcp $EXTERNAL_NET 81:90 -> $HOME_NET any (msg:"ET TROJAN Looked.P/Gamania/Delf #109/! Style CnC? Checkin Response from Server"; flow:established,from_server; dsize:6; content:"#1"; depth:2; content:"/!"; distance:2; within:2; pcre:"/^\x23\d\d\d\x2f\x21/"; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/Win32Looked; sid:2008220; rev:4;)

Updated 2008-05-15 14:08 EDT to slightly tighten the second content match and anchor the pcre to the start of the packet.

---

alert tcp $EXTERNAL_NET 81:90 -> $HOME_NET any (msg:"ET TROJAN Looked.P/Gamania/Delf #109/! Style CnC? Checkin Response from Server"; flow:established,from_server; dsize:6; content:"#1"; depth:2; content:"/!"; offset:4; pcre:"/\x23\d\d\d\x2f\x21/"; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/Win32Looked; sid:2008220; rev:3;)

Added 2008-05-14 10:16:43 UTC

alert tcp $EXTERNAL_NET 81:90 -> $HOME_NET any (msg:"ET TROJAN Looked.P/Gamania/Delf #109/! Style CnC? Checkin Response from Server"; flow:established,from_server; dsize:6; content:"#1"; depth:2; content:"/!"; offset:4; pcre:"/\x23\d\d\d\x2f\x21/"; classtype:trojan-activity; reference:url,doc.emergingthreats.net/bin/view/Main/Win32Looked; sid:2008220; rev:3;)

Added 2008-05-14 10:16:43 UTC

alert tcp $EXTERNAL_NET 81:90 -> $HOME_NET any (msg:"ET TROJAN Looked.P/Gamania/Delf #108/! Style CnC? Checkin Response from Server"; flow:established,from_server; flowbits:set,ET.Looked8219.1; dsize:6; content:"#1"; depth:2; content:"/!"; offset:4; pcre:"/\x23\d\d\d\x2f\x21/"; classtype:trojan-activity; flowbits:set,ET.Looked8219.1; reference:url,doc.emergingthreats.net/bin/view/Main/Win32Looked; sid:2008220; rev:2;)

Added 2008-05-14 09:48:07 UTC

alert tcp $EXTERNAL_NET 81:90 -> $HOME_NET any (msg:"ET TROJAN Looked.P/Gamania/Delf #108/! Style CnC? Checkin Response from Server"; flow:established,from_server; flowbits:set,ET.Looked8219.1; dsize:6; content:"#1"; depth:2; content:"/!"; offset:4; pcre:"/\x23\d\d\d\x2f\x21/"; classtype:trojan-activity; flowbits:set,ET.Looked8219.1; reference:url,doc.emergingthreats.net/bin/view/Main/Win32Looked; sid:2008220; rev:2;)

Added 2008-05-14 09:48:07 UTC

alert tcp $EXTERNAL_NET 81:90 -> $HOME_NET any (msg:"ET TROJAN Looked.P/Gamania/Delf #108/! Style CnC? Checkin Response"; flow:established,from_server; flowbits:isset,ET.Looked8219.1; dsize:6; content:"#1"; depth:2; content:"/!"; offset:4; pcre:"/\x23\d\d\d\x2f\x21/"; classtype:trojan-activity; flowbits:set,ET.Looked8219.1; reference:url,doc.emergingthreats.net/bin/view/Main/Win32Looked; sid:2008220; rev:1;)

Added 2008-05-14 09:32:47 UTC