diff --git a/detection-rules/scam_employer_review_solicitation.yml b/detection-rules/scam_employer_review_solicitation.yml new file mode 100644 index 00000000000..e8eea1c645b --- /dev/null +++ b/detection-rules/scam_employer_review_solicitation.yml @@ -0,0 +1,75 @@ +name: "Scam soliciting employer review/rating" +description: "Detects scam content that impersonates employer review/rating platforms (e.g., Glassdoor, Indeed, Comparably, Great Place to Work) and solicits the recipient to review or rate their employer, while excluding legitimate review/rating platform senders." +type: "rule" +severity: "low" +source: | + type.inbound + // credential theft or scam intent + and any(ml.nlu_classifier(body.current_thread.text).intents, + .name in ("cred_theft", "job_scam") and .confidence != "low" + ) + // employer/workplace review solicitation phrasing + and regex.icontains(body.current_thread.text, + '\brate\s+(?:your\s+)?(?:employer|workplace|job)\b', + '\breview\s+(?:your\s+)?(?:experience\s+(?:at|with)\s+(?:your|the)\s)', + '\b(?:employer|workplace|job)\s+(?:review|rating|feedback)\b', + '\bleave\s+(?:a\s+)?(?:review|rating).{0,40}(?:employer|workplace|job)', + '(?:glassdoor|comparably|great\s+place\s+to\s+work|kununu|jobcase).{0,40}(?:review|rate|rating|feedback)' + ) + and ( + // credential harvesting + regex.icontains(body.current_thread.text, + '(?:enter|provide|confirm|verify).{0,40}(?:password|credentials|login|email\s+and\s+password)', + 'verify\s+your\s+(?:identity|eligibility|account|profile)', + '(?:password|credential|login).{0,30}(?:enter|provide|confirm|verify|required)' + ) + // or monetary incentive + or regex.icontains(body.current_thread.text, + 'gift.?card', + '(?:receive|earn|get|claim).{0,30}[\$€£]\d+', + '[\$€£]\d+.{0,30}(?:gift|reward|credit|incentive|voucher|bonus|prize)', + 'token\s+of\s+(?:our\s+)?(?:appreciation|thanks|gratitude)' + ) + ) + // negating legitimate/trusted employer review/rating senders + and not ( + ( + sender.email.domain.root_domain in ( + 'comparably.com', + 'greatplacetowork.com', + 'builtin.com', + 'lensa.com', + 'ziprecruiter.com', + 'kununu.com', + 'jobcase.com', + 'trustpilot.com' + ) + or sender.email.domain.root_domain in $high_trust_sender_root_domains + ) + and coalesce(headers.auth_summary.dmarc.pass, false) + ) + // subject cites employer review / rating / feedback context + and regex.icontains(subject.subject, + '\breview\b', + '\brating\b', + '\brate\b', + '\bfeedback\b', + '\btestimonial\b', + '\b(?:employer|workplace|company|employee|job)\b', + '\b(?:glassdoor|indeed|linkedin|comparably|great\s+place\s+to\s+work|built\s?in|lensa|ziprecruiter|kununu|jobcase|trustpilot)\b', + '\bexperience\b', + '\bsurvey\b', + '\bopinion\b' + ) +attack_types: + - "BEC/Fraud" + - "Credential Phishing" +tactics_and_techniques: + - "Social engineering" + - "Impersonation: Brand" +detection_methods: + - "Content analysis" + - "Natural Language Understanding" + - "Header analysis" + - "Sender analysis" +id: "ad3c63e8-02a8-5583-bb60-e5ebd76d0331"