Detection rules › Sigma
CVE-2020-0688 Exchange Exploitation via Web Log
Detects the exploitation of Microsoft Exchange vulnerability as described in CVE-2020-0688
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Initial Access | T1190 Exploit Public-Facing Application |
Rule body yaml
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
references:
- https://www.trustedsec.com/blog/detecting-cve-20200688-remote-code-execution-vulnerability-on-microsoft-exchange-server/
author: Florian Roth (Nextron Systems)
date: 2020-02-29
modified: 2023-01-02
tags:
- attack.initial-access
- attack.t1190
- cve.2020-0688
- detection.emerging-threats
logsource:
category: webserver
detection:
selection1:
cs-method: 'GET'
cs-uri-query|contains:
- '/ecp/'
- '/owa/'
selection2:
cs-uri-query|contains: '__VIEWSTATE='
condition: all of selection*
falsepositives:
- Unknown
level: critical
Stages and Predicates
Stage 0: condition
all of selection*Stage 1: selection1
selection1:
cs-method: 'GET'
cs-uri-query|contains:
- '/ecp/'
- '/owa/'
Stage 2: selection2
selection2:
cs-uri-query|contains: '__VIEWSTATE='
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
cs-method | eq |
|
cs-uri-query | match |
|