alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET ADWARE_PUP Win32/DownloadAssistant.A PUP CnC";
flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/v2/"; depth:4; fast_pattern;
pcre:"/^\/v2\/(?:(?:(?:intro_impr|s)ession|l(?:aunch|og)|exit)/$|c(?:(?:dn_(?:success|check)|ancel)/$|lick/))/";
http.header_names;
content:"X-Crypto-Version";
content:!"User-Agent";
reference:md5,a54f78d0fe6d1a1a09c22a71646c24b3;
classtype:pup-activity;
sid:2021282; rev:5;
metadata:created_at 2015_06_16, signature_severity Minor, updated_at 2020_08_31;
)