alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Observed DownloadAssistant User-Agent"; flow:established,to_server; http.user_agent; content:"DLA/"; startswith; reference:md5,521875fc63f4b2c004deb75e766cb8c5; classtype:pup-activity; sid:2030933; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_09_30, deployment Internet, performance_impact Low, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_30;)