Rule History

SID: 2610524 • Source: tgreen/hunting

Versions (4)

Version DetailsCurrent

Rev: 3 • Mar 19, 2025, 4:38 PM

Message:

TGI HUNT Possible Cobalt Strike Extra Whitespace HTTP Response

Rule:

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"TGI HUNT Possible Cobalt Strike Extra Whitespace HTTP Response"; flow:established,to_client; content:"HTTP/1.1|20|200|20|OK|20 0d 0a|Content-Type|3a|"; flowbits:isnotset,hunt.entrust_entelligence; content:!"WEBrick"; http_header; reference:url,github.com/fox-it/cobaltstrike-extraneous-space; threshold:type limit, track by_src, seconds 60, count 1; classtype:trojan-activity; sid:2610524; rev:3;)

Created:

Mar 19, 2025, 4:38 PM

Updated:

Mar 19, 2025, 4:38 PM

DB Created:

Jul 29, 2025, 5:35 PM

DB Updated:

Jul 29, 2025, 5:35 PM

Filename:

hunting.rules