Rule History

alert tcp any any -> any 445 (msg:"ET MALWARE Possible KAPTOXA Encoded Data Transferred Over SMB 8"; flow:to_server,established; flowbits:isset,ET.kaptoxa; content:"SMB"; content:"Tl"; fast_pattern; distance:0; pcre:"/^[a-zA-Z0-9/]{2}(?:M[1fhl]|T[1fhl]|s[hl])[a-zA-Z0-9/]{2}(?:M[1fhl]|T[1fhl]|s[hl])[a-zA-Z0-9/]{2}(?:M[1fhl]|T[1fhl]|s[hl])[a-zA-Z0-9/]{2}(?:M[1fhl]|T[1fhl]|s[hl])/R"; reference:url,securityintelligence.com/target-data-breach-kaptoxa-pos-malware/; classtype:trojan-activity; sid:2018066; rev:2; metadata:created_at 2014_02_04, confidence Medium, signature_severity Major, updated_at 2019_07_26;)