Rule History

SID: 903204991 • Source: sslbl/ssl-fp-blacklist

Versions (3)

Version DetailsCurrent

Rev: 1 • Jun 25, 2025, 11:40 AM

Message:

SSLBL: Malicious SSL certificate detected (CobaltStrike C&C)

Rule:

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"SSLBL: Malicious SSL certificate detected (CobaltStrike C&C)"; tls_cert_fingerprint; content:"4b:00:c2:3c:42:00:f2:54:5e:d2:ea:a1:d4:f8:2f:7b:5e:ed:9d:f0"; reference:url, sslbl.abuse.ch/ssl-certificates/sha1/4b00c23c4200f2545ed2eaa1d4f82f7b5eed9df0/; sid:903204991; rev:1;)

Created:

Jun 25, 2025, 11:40 AM

Updated:

Jun 25, 2025, 11:40 AM

DB Created:

Jul 17, 2025, 2:34 PM

DB Updated:

Jul 17, 2025, 2:34 PM

Filename:

sslblacklist_tls_cert.rules