Usage Of Web Request Commands And Cmdlets

Severity: medium
Author: James Pemberton / @4A616D6573, Endgame, JHasenbusch, oscd.community, Austin Songer @austinsonger
Source: upstream

Detects the use of various web request commands with commandline tools and Windows PowerShell cmdlets (including aliases) via CommandLine

MITRE ATT&CK coverage

Tactic	Techniques
Execution	`T1059.001` Command and Scripting Interpreter: PowerShell

Event coverage

Provider	Event ID	Title
Sysmon	1	Process creation
Security-Auditing	4688	A new process has been created.

Stages and Predicates

Stage 1: `selection`

or:
CommandLine|contains: ' irm '
CommandLine|contains: Invoke-RestMethod
CommandLine|contains: Invoke-WebRequest
CommandLine|contains: Resume-BitsTransfer
CommandLine|contains: Start-BitsTransfer
CommandLine|contains: WinHttp.WinHttpRequest
CommandLine|contains: '[System.Net.WebRequest]::create'
CommandLine|contains: 'curl '
CommandLine|contains: 'iwr '
CommandLine|contains: 'wget '

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.