alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Unk.VBSLoader Retrieving Payload"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".png?uid=TQBpAGMAcgBvAHMAbwBmAHQAIABXAGk"; fast_pattern; http.header_names; content:!"Referer"; reference:md5,2c727910738e0a381acf00fd0e1d636d; classtype:trojan-activity; sid:2030139; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_02_21, deployment Perimeter, confidence High, signature_severity Major, updated_at 2020_11_02;)