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Checking current thread text mentions follow up #2808

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Checking current thread text mentions follow up #2808

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a5542da
Checking current thread text mentions follow up
MSAdministrator Jun 9, 2025
c592b77
Adding below email string condition
MSAdministrator Jun 10, 2025
c8a4efc
Adding below email/message/request string to current thread text check
MSAdministrator Jun 10, 2025
7fc36ac
Adding check if display_name is unknown
MSAdministrator Jun 10, 2025
29a62c6
Removing following up
MSAdministrator Jun 10, 2025
436d18b
Adding purchasing to list fo current thread text
MSAdministrator Jun 11, 2025
b6a6ebc
Adding `Client Information` to regex in thread text
MSAdministrator Jun 11, 2025
bc9f032
Merge branch 'main' into spam_thread_follow_up
IndiaAce Jun 23, 2025
0fa0e7b
Merge branch 'main' into spam_thread_follow_up
MSAdministrator Jun 23, 2025
288c011
fix: Removing purchasing based on feedbak
MSAdministrator Jun 23, 2025
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15 changes: 13 additions & 2 deletions detection-rules/spam_attendee_list_solicitation.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,7 @@ source: |
any([subject.subject, body.current_thread.text],
(
regex.icontains(.,
'(?:Attendee|Buyer|Contact|Decision Maker|Email|Member|Participant|Professional|Registrant|User|Visitor|Store|Grocer)(?:[[:punct:]]*s)?(?:\s\w*){0,9}(?:list(?:\b|[^ei])|database)'
'(?:Attendee|Buyer|Contact|Client|Decision Maker|Email|Member|Participant|Professional|Registrant|User|Visitor|Store|Grocer)(?:[[:punct:]]*s)?(?:\s\w*){0,9}(?:list(?:\b|[^ei])|database|Information)'
)
and not (
regex.icount(.,
Expand All @@ -37,7 +37,7 @@ source: |
"(?:interest(s|ed)|accessing|purchas|obtain|acuir|sample|provide.{0,10}samples|counts|pricing)"
)
and not regex.icontains(body.current_thread.text,
"(?:debit card|transaction.{0,20}processed|receipt)"
"(?:debit card|transaction.{0,20}processed|receipt?)"
)
)
// if there are indicators of a previous thread, also inspect the previous thread
Expand All @@ -59,6 +59,10 @@ source: |
// "the email I sent you earlier"
'(e?mail|message).{0,20}(sent).{0,20}(?:below|previous(ly)?|last|prior|earlier)'
),
regex.icontains(body.current_thread.text,
// "below email"
'(?:below) (e?mail|message|request)'
),
regex.icontains(body.current_thread.text,
'(sent).{0,50}(e?mail|message) (?:below|previous(ly)?|last|prior|earlier)'
),
Expand Down Expand Up @@ -90,6 +94,13 @@ source: |
"> wrote:"
)
)
// If there is no display_name we still check for <email> wrote:
or strings.icontains(.,
strings.concat(" <",
sender.email.email,
"> wrote:"
)
)
)
// match _after_ the previous thread indciators
and (
Expand Down
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