Suspicious .NET process loads an MSBuild DLL

Cortex XDR Analytics Alert Reference by Alert name

Product
Cortex XDR
Last date published
2024-06-04
Category
Analytics Alert Reference
Order
Alert name

Synopsis

Activation Period

14 Days

Training Period

30 Days

Test Period

N/A (single event)

Deduplication Period

1 Day

Required Data

  • Requires:
    • XDR Agent

Detection Modules

ATT&CK Tactic

Defense Evasion (TA0005)

ATT&CK Technique

Trusted Developer Utilities Proxy Execution: MSBuild (T1127.001)

Severity

Medium

Description

A suspicious process in the Microsoft .NET directory loaded the Microsoft Build Framework DLL. This may occur if an attacker masquerades a process like MSBuild (PowerLessShell).

Attacker's Goals

Gain code execution on the host and evade security controls.

Investigative actions

Check whether the executing process is benign, and if this was a desired behavior as part of its normal execution flow.