Azure CLI Password Spray Attacks Surge: Detection, Blocking, and Investigation Guide
By
HackMoN Ai
Summary
Microsoft Entra ID (Azure AD) is experiencing a surge in password spray attacks targeting Azure CLI authentication endpoints. Unlike traditional brute-force attacks, password spraying uses common passwords across many accounts, making it harder to detect. The article provides detection methods (including KQL queries for Microsoft Sentinel), blocking strategies (Conditional Access policies, authentication hardening), and investigation techniques for security professionals to defend against these attacks.
Source
bskyAzure CLI Password Spray Attacks Surge: Detection, Blocking, and Investigation Guideundercodetesting.comKey quotes
· 3 pulledUnlike traditional brute-force attacks that hammer a single account with thousands of passwords, password spraying uses a handful of common passwords across thousands of accounts – a quieter, more evasive approach that often flies under the radar.
What makes the current wave particularly concerning is the use of Azure CLI authentication endpoints, which are often less monitored than traditional web-based login portals.
Security professionals across the globe have reported a sharp increase in password spray attacks specifically targeting Azure CLI authentication endpoints.
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