alert http1 $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE ReVBShell Command Response"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:4; content:"/cmd"; http.header_names; bsize:72; content:"|0d 0a|Connection|0d 0a|Content-Type|0d 0a|Accept|0d 0a|User-Agent|0d 0a|Content-Length|0d 0a|Host|0d 0a 0d 0a|"; http.request_body; content:"Content-Disposition|3a 20|form-data|3b 20|name=|22|cmd|22|"; content:"Content-Disposition|3a 20|form-data|3b 20|name=|22|result|22 3b 20|filename=|22|cmdoutput|22|"; fast_pattern; reference:url,github.com/bitsadmin/ReVBShell; classtype:trojan-activity; sid:2036636; rev:3; metadata:attack_target Client_Endpoint, created_at 2022_05_19, deployment Perimeter, malware_family ReVBShell, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_04_03, reviewed_at 2024_09_12;)