WScript or CScript Dropper - File

Severity: high
Author: Tim Shelton
Source: upstream

Detects a file ending in jse, vbe, js, vba, vbs written by cscript.exe or wscript.exe

MITRE ATT&CK coverage

Tactic	Techniques
Execution	`T1059.005` Command and Scripting Interpreter: Visual Basic, `T1059.007` Command and Scripting Interpreter: JavaScript

Event coverage

Provider	Event ID	Title
Sysmon	11	FileCreate

Stages and Predicates

Stage 1: `selection`

or:
Image|endswith: '\cscript.exe'
Image|endswith: '\wscript.exe'
or:
TargetFilename|endswith: .js
TargetFilename|endswith: .jse
TargetFilename|endswith: .vba
TargetFilename|endswith: .vbe
TargetFilename|endswith: .vbs
or:
TargetFilename|startswith: 'C:\ProgramData'
TargetFilename|startswith: 'C:\Users\'

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.