Rule History

SID: 2009244 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 2 • Jul 30, 2010, 12:00 PM

Message:

ET ATTACK_RESPONSE Cisco TclShell TFTP Read Request

Rule:

alert udp $HOME_NET any -> $EXTERNAL_NET 69 (msg:"ET ATTACK_RESPONSE Cisco TclShell TFTP Read Request"; content:"|00 01 74 63 6C 73 68 2E 74 63 6C|"; reference:url,wwww.irmplc.com/downloads/whitepapers/Creating_Backdoors_in_Cisco_IOS_using_Tcl.pdf; classtype:bad-unknown; sid:2009244; rev:2; metadata:created_at 2010_07_30, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)

Created:

Jul 30, 2010, 12:00 PM

Updated:

Jul 26, 2019, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Oct 2, 2025, 10:34 PM

Filename:

rules/emerging-attack_response.rules