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Update impersonation_sharepoint_fake_file_share.yml ESC-5582 #3732

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Update impersonation_sharepoint_fake_file_share.yml ESC-5582 #3732

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9c3bd0f
Update impersonation_sharepoint_fake_file_share.yml ESC-5582
IndiaAce Jan 5, 2026
07bbb24
Merge branch 'main' into lwescott-ESC-5582-update_impersonation_share…
aidenmitchell Jan 12, 2026
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11 changes: 9 additions & 2 deletions detection-rules/impersonation_sharepoint_fake_file_share.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -325,7 +325,10 @@ source: |
strings.parse_url(strings.concat("https://", .)).domain.root_domain == "sharepoint.com"
)
)
and sender.email.domain.root_domain not in $org_domains
and not (
sender.email.domain.root_domain in $org_domains
and coalesce(headers.auth_summary.dmarc.pass, false)
)
and sender.email.domain.root_domain not in (
"bing.com",
"microsoft.com",
Expand Down Expand Up @@ -390,7 +393,11 @@ source: |
)
)
)
and not profile.by_sender().any_messages_benign
and not (
profile.by_sender().any_messages_benign
and coalesce(headers.auth_summary.dmarc.pass, false)
)

attack_types:
- "Credential Phishing"
- "Malware/Ransomware"
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