Windows CryptoAPI Spoofing Vulnerability (CVE-2020-0601 - CurveBall)edit
A spoofing vulnerability exists in the way Windows CryptoAPI (Crypt32.dll) validates Elliptic Curve Cryptography (ECC) certificates. An attacker could exploit the vulnerability by using a spoofed code-signing certificate to sign a malicious executable, making it appear the file was from a trusted, legitimate source.
Rule type: query
Rule indices:
- winlogbeat-*
- logs-windows.*
- logs-system.security*
Severity: low
Risk score: 21
Runs every: 5m
Searches indices from: None (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References: None
Tags:
- Domain: Endpoint
- OS: Windows
- Use Case: Threat Detection
- Tactic: Defense Evasion
- Use Case: Vulnerability
Version: 104
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule queryedit
event.provider:"Microsoft-Windows-Audit-CVE" and message:"[CVE-2020-0601]" and host.os.type:windows
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Subvert Trust Controls
- ID: T1553
- Reference URL: https://attack.mitre.org/techniques/T1553/
-
Sub-technique:
- Name: Code Signing
- ID: T1553.002
- Reference URL: https://attack.mitre.org/techniques/T1553/002/