Rule History

SID: 2034392 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1 • Nov 9, 2021, 12:00 PM

Message:

ET MALWARE Malicious Cobalt Strike SSL Cert (asurecloud .tech)

Rule:

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Malicious Cobalt Strike SSL Cert (asurecloud .tech)"; flow:established,to_client; tls.cert_subject; content:"CN=asurecloud.tech"; bsize:18; fast_pattern; reference:url,www.cert.ssi.gouv.fr/uploads/CERTFR-2021-CTI-009.pdf; classtype:domain-c2; sid:2034392; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_11_09, deployment Perimeter, malware_family Cobalt_Strike, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_11_09;)

Created:

Nov 9, 2021, 12:00 PM

Updated:

Nov 9, 2021, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 8, 2025, 9:34 PM

Filename:

rules/emerging-malware.rules