Rule History

SID: 2035359 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1 • Mar 1, 2022, 12:00 PM

Message:

ET JA3 Hash - Possible AnchorMail CnC Traffic

Rule:

alert tls $HOME_NET any -> $EXTERNAL_NET [465,993] (msg:"ET JA3 Hash - Possible AnchorMail CnC Traffic"; flow:established,to_server; ja3.hash; content:"c216e752cae6f8755fd27f561d031636"; reference:url,securityintelligence.com/posts/new-malware-trickbot-anchordns-backdoor-upgrades-anchormail/; reference:md5,139e70aa7f26f998c1058c270a51783d; classtype:command-and-control; sid:2035359; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_03_01, deployment Perimeter, confidence Low, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_03_01;)

Created:

Mar 1, 2022, 12:00 PM

Updated:

Mar 1, 2022, 12:00 PM

DB Created:

Mar 1, 2022, 12:00 PM

DB Updated:

Sep 5, 2025, 9:34 PM

Filename:

rules/emerging-ja3.rules