alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Maldoc Checkin Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/Android/iprdr.php"; fast_pattern; bsize:18; http.user_agent; content:"|3b 20|ms-office|3b 20|"; http.header_names; content:!"Referer"; reference:url,twitter.com/Timele9527/status/1435495701329317895; reference:md5,28ffba0b074218b0c9ff0360d8791bfd; classtype:trojan-activity; sid:2033914; rev:1; metadata:created_at 2021_09_08, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_09_08, reviewed_at 2023_08_22;)