alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/WhiskerSpy - Key Material Upload"; flow:established,to_server; http.request_body; content:"Content|2d|Disposition|3a 20|form|2d|data|3b 20|name|3d 22|0|22 0d 0a 0d 0a|1|0d 0a|"; content:"Content-Disposition|3a 20|form-data|3b 20|name=|22|1|22 0d 0a 0d 0a|l"; content:"Content|2d|Disposition|3a 20|form|2d|data|3b 20|name|3d 22|a|22 3b 20|filename|3d 22|a|22 0d 0a|Content|2d|Type|3a 20|application|2f|octet|2d|stream|0d 0a 0d 0a|"; fast_pattern; content:"|0d 0a 2d 2d|"; distance:64; within:4; reference:md5,8fb3695d1487b55aaf380190a0524098; reference:url,trendmicro.com/en_us/research/23/b/earth-kitsune-delivers-new-whiskerspy-backdoor.html; classtype:command-and-control; sid:2044251; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_02_20, deployment Perimeter, deployment SSLDecrypt, malware_family WhiskerSpy, performance_impact Low, confidence High, signature_severity Major, tag RAT, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_02_20; target:src_ip;)