Versions (3)
Version DetailsCurrent
Rev: 1 • Feb 29, 2024, 12:00 PMET PHISHING DNS Query to UNC1549/TA455 Domain (browsercheckingapi .azurewebsites .net)
alert dns $HOME_NET any -> any any (msg:"ET PHISHING DNS Query to UNC1549/TA455 Domain (browsercheckingapi .azurewebsites .net)"; dns.query; bsize:36; content:"browsercheckingapi.azurewebsites.net"; nocase; reference:url,www.mandiant.com/resources/blog/suspected-iranian-unc1549-targets-israel-middle-east; classtype:social-engineering; sid:2051259; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_02_29, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_29;)
Feb 29, 2024, 12:00 PM
Feb 29, 2024, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 13, 2025, 9:35 PM
rules/emerging-phishing.rules