Rule History

SID: 2001985 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 8 • Jul 30, 2010, 12:00 PM

Message:

ET DELETED HTTP RBOT Challenge/Response Authentication

Rule:

alert tcp $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"ET DELETED HTTP RBOT Challenge/Response Authentication"; flow:to_server,established; content:"Host|3A 20|"; nocase; content:"|3A 20|Negotiate|20|YIIQegYGKwYBBQUCoIIQbjCCEGqhghBmI4IQYgOCBAEAQUFBQUFBQUFBQUFBQUFB"; nocase; reference:url,isc.sans.org/diary.php?date=2005-06-03; reference:url,www.phreedom.org/solar/exploits/msasn1-bitstring; classtype:trojan-activity; sid:2001985; rev:8; metadata:created_at 2010_07_30, signature_severity Unknown, 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 1, 2025, 9:34 PM

Filename:

rules/emerging-deleted.rules