MSBuild Executing Non-Project File or Remote Payload

ATT&CK techniques

Execution → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
- T1059Command and Scripting Interpreter
- T1127.001MSBuild
Persistence
Priv Esc
Defense Evasion
- T1127.001MSBuild
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects MSBuild running a file that is not a normal project such as a log file or a payload staged in a public folder. Unfading Sea Haze abuses MSBuild to compile and execute .NET loaders in memory from these staged files.

Reporting behind it

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MSBuild Executing Non-Project File or Remote Payload

Pivot detection · T1059 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

Full detection rule

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