Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE SQUIRRELWAFFLE Server Response"; flow:established,to_client; http.stat_code; content:"200"; http.content_type; content:"text/html|3b 20|charset=UTF-8"; bsize:24; file.data; content:"|0d 0d 0d 09 09 09 0a 0a 0a|"; startswith; fast_pattern; pcre:"/^.{4}(?:R(?:k(?:Z(?:GQkBG|CQEY)|BCRUVG)|0FFRkFH|UJDQUE)|Q(?:U(?:V(?:CQ0FB|GQUc)|NCRkI)|kFDQkZC|EJFRUY)|(?:Z(?:AQkVF|GRkJA)R|JBQ0JGQ)g|FFQkNBQQ|dBRUZBRw)/R"; content:"|0a 0a 0a 09 09 09 0d 0d 0d|"; endswith; reference:url,twitter.com/jaydinbas/status/1437708323038564352; classtype:command-and-control; sid:2033982; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_09_17, deployment Perimeter, malware_family SQUIRRELWAFFLE, performance_impact Moderate, confidence Medium, signature_severity Major, updated_at 2022_05_03;)