Rule History

SID: 2032959 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1 • May 13, 2021, 12:00 PM

Message:

ET JA3 Hash - Possible RustyBuer Client Activity

Rule:

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET JA3 Hash - Possible RustyBuer Client Activity"; flowbits:set,ET.rustybuer; flowbits:noalert; ja3.hash; content:"6cc312d5b10bcbc97c4619603a24131b"; reference:md5,ea98a9d6ca6f5b2a0820303a1d327593; classtype:bad-unknown; sid:2032959; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_05_13, deployment Perimeter, malware_family RustyBuer, performance_impact Low, confidence Low, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_05_13;)

Created:

May 13, 2021, 12:00 PM

Updated:

May 13, 2021, 12:00 PM

DB Created:

May 13, 2021, 12:00 PM

DB Updated:

Sep 11, 2025, 9:34 PM

Filename:

rules/emerging-ja3.rules