PowerShell Initiates a Network Connection to GitHub

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:
    • Palo Alto Networks Url Logs

Detection Modules

ATT&CK Tactic

Execution (TA0002)

ATT&CK Technique

Command and Scripting Interpreter: PowerShell (T1059.001)

Severity

Low

Description

PowerShell initiates a Network Connection to GitHub with an uncommon command line. This may have legitimate uses, but this technique is frequently used by attackers to serve malicious payloads.

Attacker's Goals

Download a second stage payload for execution.

Investigative actions

  • Check if the initiator process is malicious.
  • Check for additional file/network operations by the same PowerShell instance.

Variations

PowerShell Initiates a Network Connection to GitHub from a sensitive server

Synopsis

ATT&CK Tactic

Execution (TA0002)

ATT&CK Technique

Command and Scripting Interpreter: PowerShell (T1059.001)

Severity

Medium

Description

PowerShell initiates a Network Connection to GitHub with an uncommon command line. This may have legitimate uses, but this technique is frequently used by attackers to serve malicious payloads.

Attacker's Goals

Download a second stage payload for execution.

Investigative actions

  • Check if the initiator process is malicious.
  • Check for additional file/network operations by the same PowerShell instance.