Rule History

SID: 2037959 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1 • Aug 8, 2022, 12:00 PM

Message:

ET JA3 Hash - DeimosC2 Agent Activity

Rule:

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET JA3 Hash - DeimosC2 Agent Activity"; flowbits:isset,ET.deimosc2.ja3; ja3s.hash; content:"f4febc55ea12b31ae17cfb7e614afda8"; reference:url,github.com/DeimosC2/DeimosC2; classtype:bad-unknown; sid:2037959; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_08_08, deployment Perimeter, confidence Low, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_08;)

Created:

Aug 8, 2022, 12:00 PM

Updated:

Aug 8, 2022, 12:00 PM

DB Created:

Aug 8, 2022, 10:00 PM

DB Updated:

Sep 1, 2025, 8:35 PM

Filename:

rules/emerging-ja3.rules