alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Unix/Linux Processhider Source Being Downloaded"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/d/processhider.c"; bsize:17; fast_pattern; http.user_agent; content:"curl/"; startswith; http.host; content:"m.windowsupdatesupport.org"; bsize:26; reference:md5,4ff3828a2ecc6314bfc7dc22ca194480; reference:url,twitter.com/JAMESWT_MHT/status/1402239031602302983; classtype:bad-unknown; sid:2033117; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_06_08, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_06_08;)