possible_applocker_bypass

rule possible_applocker_bypass {
 meta:
    author = "juju4"
    description = "Detects execution of executables that can be used to bypass Applocker whitelisting  License: https://github.com/Neo23x0/sigma/blob/master/LICENSE.Detection.Rules.md."
    reference = "https://tdm.socprime.com/tdm/info/yzPJ2jDeOwGR"
    version = "0.01"
    created = "2021-03-09"
    category = "process_creation"
    product = "windows"
    mitre = "defense_evasion, t1118, t1121, t1127, t1170"

  events:
((re.regex($selection.target.process.command_line, `.*\\msdt\.exe.*`) or re.regex($selection.target.process.command_line, `.*\\installutil\.exe.*`) or re.regex($selection.target.process.command_line, `.*\\regsvcs\.exe.*`) or re.regex($selection.target.process.command_line, `.*\\regasm\.exe.*`) or re.regex($selection.target.process.command_line, `.*\\msbuild\.exe.*`) or re.regex($selection.target.process.command_line, `.*\\ieexec\.exe.*`)) and ($selection.metadata.product_event_type = "4688" or $selection.metadata.product_event_type = "1"))

  condition:
    $selection
}