Rule History

SID: 903203535 • Source: abuse.ch/sslbl-blacklist

Versions (3)

Version DetailsCurrent

Rev: 1 • Jun 25, 2025, 11:40 AM

Message:

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

Rule:

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"SSLBL: Malicious SSL certificate detected (Ostap C&C)"; tls_cert_fingerprint; content:"21:45:df:a3:9e:0e:50:70:2a:ee:09:ae:a1:b6:8a:9a:1e:75:55:c3"; reference:url, sslbl.abuse.ch/ssl-certificates/sha1/2145dfa39e0e50702aee09aea1b68a9a1e7555c3/; sid:903203535; 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