Curl Download And Execute Combination

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About the rule

Rule Type

Standard

Rule Description

Adversaries can use curl to download payloads remotely and execute them. Curl is included by default in Windows 10 build 17063 and later.

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Process started" AND COMMANDLINE contains " -c , /c , –c , —c , ―c " AND (COMMANDLINE contains "curl " AND COMMANDLINE contains "http" AND COMMANDLINE contains "-o" AND COMMANDLINE contains "&") select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

Sreeman, Nasreddine Bencherchali (Nextron Systems)