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

SID: 903209899Rev: 1EnabledDerived1 views
Filesslblacklist_tls_cert.rules
CreatedJune 15, 2026
UpdatedJune 15, 2026
alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"SSLBL: Malicious SSL certificate detected (CobaltStrike C&C)"; tls_cert_fingerprint; content:"a5:c8:db:c5:8d:92:a5:fd:1f:8a:e7:b2:2e:6b:6f:ef:c6:f2:82:20"; reference:url, sslbl.abuse.ch/ssl-certificates/sha1/a5c8dbc58d92a5fd1f8ae7b22e6b6fefc6f28220/; sid:903209899; rev:1;)

References

urlsslbl.abuse.ch/ssl-certificates/sha1/a5c8dbc58d92a5fd1f8ae7b22e6b6fefc6f28220/

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