alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Possible T-RAT Encrypted Zip Request M1"; flow:established,to_server; http.uri; content:".jpg"; offset:7; depth:4; http.accept; content:"*/*"; bsize:3; http.user_agent; content:"Mozilla/4.0 (compatible|3b 20|MSIE 7.0|3b 20|Windows NT 6.2|3b 20|WOW64|3b 20|Trident/8.0|3b 20 2e|NET4.0C|3b 20 2e|NET4.0E|3b 20 2e|NET CLR 2.0.50727|3b 20 2e|NET CLR 3.0.30729|3b 20 2e|NET CLR 3.5.30729|3b 20|InfoPath.3)"; bsize:162; fast_pattern; reference:url,twitter.com/3xp0rtblog/status/1304006897729761280; reference:url,www.gdatasoftware.com/blog/trat-control-via-smartphone; classtype:command-and-control; sid:2031081; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_10_22, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_22;)