alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/ChromeBack Browser Hijacker (getAd)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"ad?ext=Properties"; startswith; fast_pattern; content:"&ver="; distance:0; content:"&dd="; distance:0; http.user_agent; content:"Wget"; startswith; reference:url,gosecure.net/blog/2022/02/10/malicious-chrome-browser-extension-exposed-chromeback-leverages-silent-extension-loading/; classtype:trojan-activity; sid:2036299; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_04_21, deployment Perimeter, malware_family Win32_ChromeBack, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_04_21;)