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Create abuse_google_drive_new_sender_domain.yml by @zoomequipd #2186 Source SHA 5be7870 Triggered by @zoomequipd
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name: "Service Abuse: Google Drive Share From New Reply-To Domain" | ||
description: "A Google Drive sharing notification containing a reply-to address from a recently registered domain (less than 30 days old). The reply-to domain does not match any organizational domains." | ||
type: "rule" | ||
severity: "medium" | ||
source: | | ||
type.inbound | ||
and sender.email.email in ( | ||
'[email protected]', | ||
'[email protected]', | ||
) | ||
and not any(headers.reply_to, .email.domain.domain in $org_domains) | ||
// the message needs to have a reply-to address | ||
and length(headers.reply_to) > 0 | ||
// new reply-to | ||
and any(headers.reply_to, network.whois(.email.domain).days_old < 30) | ||
tags: | ||
- "Attack surface reduction" | ||
attack_types: | ||
- "BEC/Fraud" | ||
- "Callback Phishing" | ||
- "Credential Phishing" | ||
tactics_and_techniques: | ||
- "Free email provider" | ||
- "Social engineering" | ||
- "Free file host" | ||
detection_methods: | ||
- "Header analysis" | ||
- "Sender analysis" | ||
- "Whois" | ||
id: "c1a2d367-ebdd-5557-926d-fe7b9ebfa324" | ||
testing_pr: 2186 | ||
testing_sha: 5be7870cd48e1ea9c1818df9a4d582e69c700843 |