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Detectionhightest

Remove Exported Mailbox from Exchange Webserver

Detects removal of an exported Exchange mailbox which could be to cover tracks from ProxyShell exploit

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Christian Burkard (Nextron Systems)Created Fri Aug 27Updated Mon Jan 2309570ae5-889e-43ea-aac0-0e1221fb3d95windows
Log Source
Windowsmsexchange-management
ProductWindows← raw: windows
Servicemsexchange-management← raw: msexchange-management
Detection Logic
Detection Logic1 selector
detection:
    keywords:
        '|all':
            - 'Remove-MailboxExportRequest'
            - ' -Identity '
            - ' -Confirm "False"'
    condition: keywords
False Positives
Unknown

False positive likelihood has not been assessed. Additional context may be needed during triage.

References
1
Resolving title…
github.com
MITRE ATT&CK
Rule Metadata
Rule ID
09570ae5-889e-43ea-aac0-0e1221fb3d95
Status
test
Level
high
Type
Detection
Created
Fri Aug 27
Modified
Mon Jan 23
Author
Christian Burkard (Nextron Systems)
Path
rules/windows/builtin/msexchange/win_exchange_proxyshell_remove_mailbox_export.yml
Raw Tags
attack.defense-evasionattack.t1070
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