alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET PHISHING Successful IRS Credential Phish 2022-04-25";
flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/geoAPIChecker/geochecker.php"; bsize:29; fast_pattern;
http.content_type;
content:"WebKitFormBoundary";
http.request_body;
content:"Content|2d|Disposition|3a 20|form|2d|data|3b 20|name|3d 22|ai|22|";
content:"Content|2d|Disposition|3a 20|form|2d|data|3b 20|name|3d 22|pr|22|"; distance:0;
reference:url,resecurity.com/blog/article/cybercriminals-deliver-irs-tax-scams-phishing-campaigns-by-mimicking-government-vendors;
classtype:credential-theft;
sid:2036362; rev:2;
metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_04_25, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_04_25;
)