Brand impersonation: Sharepoint
Body, attached images or pdf contains a Sharepoint logo. The message contains a link and credential theft language.
Sublime rule (View on GitHub)
1name: "Brand impersonation: Sharepoint"
2description: |
3 Body, attached images or pdf contains a Sharepoint logo. The message contains a link and credential theft language.
4type: "rule"
5severity: "high"
6source: |
7 type.inbound
8 and length(body.links) > 0
9 and (
10 any(attachments,
11 (.file_type in $file_types_images or .file_type == "pdf")
12 and any(ml.logo_detect(.).brands, .name == "Microsoft SharePoint")
13 )
14 or any(ml.logo_detect(beta.message_screenshot()).brands, .name == "Microsoft SharePoint")
15 )
16 and (
17 any(ml.nlu_classifier(body.current_thread.text).intents,
18 .name == "cred_theft" and .confidence == "high"
19 )
20 or any(file.explode(beta.message_screenshot()),
21 any(ml.nlu_classifier(.scan.ocr.raw).intents,
22 .name == "cred_theft" and .confidence == "high"
23 )
24 )
25 )
26attack_types:
27 - "Credential Phishing"
28tactics_and_techniques:
29 - "Impersonation: Brand"
30 - "Social engineering"
31detection_methods:
32 - "Computer Vision"
33 - "Content analysis"
34 - "File analysis"
35 - "Natural Language Understanding"
36 - "Sender analysis"
37id: "284b1b70-8daa-5adf-9df8-15d4c6b5ead9"