alert smtp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Dmechant Exfil Passwords via SMTP"; flow:established,to_server; content:"|0d 0a|Subject|3a 20|Passwords|3a 3a 3a 3a|"; fast_pattern; content:"Username|3a 20|"; distance:0; content:"CompName|3a 20|"; distance:0; content:"Password|20 3a 20|"; distance:0; content:"Application|20 3a 20|"; distance:0; content:"========"; reference:md5,e2da54028e5172ac42c89bc2271a2bb8; reference:url,www.fortinet.com/blog/threat-research/fresh-malware-hunts-for-crypto-wallet-and-credentials; classtype:command-and-control; sid:2033414; rev:1; metadata:created_at 2021_07_25, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_25;)