Attachment: Office file contains OLE relationship to credential phishing page
Office file OLE relationship link is a credential page, or contains credential phishing language.
Sublime rule (View on GitHub)
1name: "Attachment: Office file contains OLE relationship to credential phishing page"
2description: |
3 Office file OLE relationship link is a credential page, or contains credential phishing language.
4type: "rule"
5severity: "high"
6source: |
7 type.inbound
8 and any(attachments,
9 (
10 .file_extension in~ $file_extensions_macros
11 or (
12 .file_extension is null
13 and .file_type == "unknown"
14 and .content_type == "application/octet-stream"
15 and .size < 100000000
16 )
17 )
18 and any(file.oletools(.).relationships,
19 (
20 any(ml.nlu_classifier(ml.link_analysis(.target_url).final_dom.display_text
21 ).intents,
22 .name == "cred_theft"
23 and .confidence in ("medium", "high")
24 )
25 and .target_url.domain.root_domain != "google.com"
26 )
27 or ml.link_analysis(.target_url).credphish.disposition == "phishing"
28 )
29 )
30 and (
31 (
32 profile.by_sender().prevalence in ("new", "outlier")
33 and not profile.by_sender().solicited
34 )
35 or (
36 profile.by_sender().any_messages_malicious_or_spam
37 and not profile.by_sender().any_false_positives
38 )
39 )
40
41attack_types:
42 - "Credential Phishing"
43tactics_and_techniques:
44 - "Evasion"
45 - "Social engineering"
46detection_methods:
47 - "File analysis"
48 - "HTML analysis"
49 - "Natural Language Understanding"
50 - "OLE analysis"
51 - "URL analysis"
52id: "d55793d0-865e-53c4-ae51-f1b0fec50ec6"