title: CVE-2020-0688 Exchange Exploitation via Web Log
id: fce2c2e2-0fb5-41ab-a14c-5391e1fd70a5
status: test
description: Detects the exploitation of Microsoft Exchange vulnerability as described in CVE-2020-0688
author: Florian Roth
references:
  - https://www.trustedsec.com/blog/detecting-cve-20200688-remote-code-execution-vulnerability-on-microsoft-exchange-server/
date: 2020/02/29
modified: 2021/11/27
logsource:
  category: webserver
detection:
  selection1:
    cs-method: 'GET'
    c-uri|contains:
      - '/ecp/'
      - '/owa/'
  selection2:
    c-uri|contains: '__VIEWSTATE='
  condition: selection1 and selection2
fields:
  - c-ip
  - c-dns
falsepositives:
  - Unknown
level: critical
tags:
  - attack.initial_access
  - attack.t1190
