const regex = /ESAAttachmentDetails=.*?'(\S+\.\b(?!eml|p7s|xml)\b.*?)'.*?\sESAFriendlyFrom/gi;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('ESAAttachmentDetails=.*?\'(\\S+\\.\\b(?!eml|p7s|xml)\\b.*?)\'.*?\\sESAFriendlyFrom', 'gi')
const str = `Sep 09 08:32:28 Qradar_mail_log_monoline: CEF:0|Cisco|C600V Email Security Virtual Appliance|13.0.0-375|ESA_CONSOLIDATED_LOG_EVENT|Consolidated Log 'IndiceBusta.xml' Event|5|deviceExternalId=4218A388D5F87FE03948-AF94EFBF2387 ESAMID=46698525 ESAICID=93560178 ESADCID=12077002 ESAAMPVerdict=NOT_EVALUATED ESAASVerdict=NOT_EVALUATED ESAAVVerdict=NEGATIVE ESACFVerdict=MATCH endTime=Wed Sep 9 08:32:26 2020 ESADLPVerdict=NOT_EVALUATED dvc=172.16.102.105 ESAAttachmentDetails={'smime.p7s': {'BodyScanner': {}}, 'IndiceBusta.xml': {'BodyScanner': {}}, 'postacert.eml': {'BodyScanner': {}}, '976739s.pdf': {'BodyScanner': {}}, 'daticert.xml': {'BodyScanner': {}}, 'Comunicazione.xml': {'BodyScanner': {}}, 'MELCARNE=20ANNA=20PAOLA=20-=20NOTE=20TRATTAZIONE=20SCRITTA.pdf.zip': {'BodyScanner': {}}} ESAFriendlyFrom=posta-certificata@telecompost.it ESAGMVerdict=NEGATIVE startTime=Wed Sep 9 08:32:25 2020 deviceInboundInterface=InComing deviceDirection=0 ESAMailFlowPolicy=ACCEPT suser=forward.mailbox@forward.telecompost.it cs1Label=MailPolicy cs1=INPS cs2Label=SenderCountry cs2=Italy ESAMFVerdict=MATCH act=DELIVERED cs4Label=ExternalMsgID cs4='<1991715585.1180479.1599633145120.JavaMail.root@pecbe1>'`;
// Reset `lastIndex` if this regex is defined globally
// regex.lastIndex = 0;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions