SigmaHQ/rules/windows/builtin/win_vul_cve_2020_0688.yml

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title: CVE-2020-0688 Exploitation via Eventlog
id: d6266bf5-935e-4661-b477-78772735a7cb
status: experimental
description: Detects the exploitation of Microsoft Exchange vulnerability as described in CVE-2020-0688
references:
- https://www.trustedsec.com/blog/detecting-cve-20200688-remote-code-execution-vulnerability-on-microsoft-exchange-server/
author: Florian Roth
date: 2020/02/29
tags:
- attack.initial_access
- attack.t1190
logsource:
product: windows
service: application
detection:
selection1:
EventID: 4
Source: MSExchange Control Panel
Level: Error
selection2|contains:
- '&__VIEWSTATE='
condition: selection1 and selection2
falsepositives:
- Unknown
level: high