Rule History

SID: 2610520 • Source: tgreen/hunting

Versions (4)

Version DetailsCurrent

Rev: 1 • Mar 19, 2025, 4:38 PM

Message:

TGI HUNT Possible Cobalt Strike Malleable C2 Null Response

Rule:

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"TGI HUNT Possible Cobalt Strike Malleable C2 Null Response"; flow:established,to_client; content:"200"; http_stat_code; depth:3; content:"Content-Length:|20|0|0d 0a|"; fast_pattern; flowbits:isset,hunt.cs_null_response; threshold:type limit, track by_src, seconds 60, count 1; classtype:trojan-activity; sid:2610520; rev:1;)

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