Sublime Security high experimental mql
Service abuse: Callback phishing via Microsoft Teams invite
Detects abuse of legitimate Microsoft Teams invites containing callback scam content, including brand references and financial transaction language with phone numbers.
Detection Logic
type.inbound
and sender.email.domain.domain == "teams.mail.microsoft"
// MS Teams invite indicators
and (
any(body.links,
.display_text == "Open Microsoft Teams"
and (
.href_url.domain.domain == "login.microsoftonline.com"
or strings.iends_with(.href_url.query_params,
"login.microsoftonline.com"
)
)
)
)
and (
(
regex.icontains(strings.replace_confusables(body.current_thread.text),
(
"mcafee
| norton
| geek.{0,5}squad
| pay.?pal
| ebay
| symantec
| best buy
| lifelock
| (ms
| microsoft
| teams).{0,10}premium"
)
)
or 3 of (
strings.ilike(body.current_thread.text, '*purchase*'),
strings.ilike(body.current_thread.text, '*p?ym?nt*'),
strings.ilike(body.current_thread.text, '*transaction*'),
strings.ilike(body.current_thread.text, '*subscription*'),
strings.ilike(body.current_thread.text, '*antivirus*'),
strings.ilike(body.current_thread.text, '*order*'),
strings.ilike(body.current_thread.text, '*support*'),
strings.ilike(body.current_thread.text, '*help line*'),
strings.ilike(body.current_thread.text, '*receipt*'),
strings.ilike(body.current_thread.text, '*c?ntact*'),
strings.ilike(body.current_thread.text, '*cancel*'),
strings.ilike(body.current_thread.text, '*renew*'),
strings.ilike(body.current_thread.text, '*refund*'),
strings.ilike(body.current_thread.text, '*billing*'),
regex.icontains(body.current_thread.text, '[li]nv.[li]ce')
)
)
// phone number regex
and any([body.current_thread.text, subject.subject],
regex.icontains(.,
'\+?([ilo0-9]{1}.)?\(?[ilo0-9]{3}?\)?.[ilo0-9]{3}.?[ilo0-9]{4}'
)
)
) Field Validations
Loading…
Comments (0)
Loading comments...