Invoke-Obfuscation VAR++ LAUNCHER OBFUSCATION

Severity: high
Author: Timur Zinniatullin, oscd.community
Source: upstream

Detects Obfuscated Powershell via VAR++ LAUNCHER

MITRE ATT&CK coverage

Tactic	Techniques
Execution	`T1059.001` Command and Scripting Interpreter: PowerShell
Defense Evasion	`T1027` Obfuscated Files or Information

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: '{0}'
CommandLine|contains: '{1}'
CommandLine|contains: '{2}'
CommandLine|contains: '{3}'
CommandLine|contains: '{4}'
CommandLine|contains: '{5}'
CommandLine|contains: '&&set'
CommandLine|contains: -f
CommandLine|contains: '/c'
CommandLine|contains: cmd

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.