Rule History

SID: 903204259 • 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:"a9:a0:0d:37:40:ff:31:ba:5c:f7:16:a9:6f:e4:61:7a:53:b7:e8:f0"; reference:url, sslbl.abuse.ch/ssl-certificates/sha1/a9a00d3740ff31ba5cf716a96fe4617a53b7e8f0/; sid:903204259; 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