a_scheduled_task_was_created

rule a_scheduled_task_was_created {
 meta:
    author = "Florian Roth(original) Lee Archinal(Updated)"
    description = "This detectes when a registry key is set under \\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Schedule\\TaskCache\\Tasks\\  License: https://github.com/Neo23x0/sigma/blob/master/LICENSE.Detection.Rules.md."
    reference = "https://tdm.socprime.com/tdm/info/nnJBPo7RT9Rh"
    version = "0.01"
    created = "2019/04/30"
    product = "windows"
    service = "sysmon"
    mitre = "execution, persistence, privelege_escalation, t1053, s0111"

  events:
((($selection1.metadata.product_event_type = "1" and re.regex($selection1.target.process.file.full_path, `.*\\schtasks\.exe`) and re.regex($selection1.target.process.command_line, `.* /create .*`)) or ($selection1.metadata.product_event_type = "12" and $selection1.target.process.file.full_path = "C:\\Windows\\System32\\schtasks.exe")) or ($selection1.metadata.product_event_type = "13" and re.regex($selection1.target.registry.registry_key, `.*\\Schedule\\TaskCache\\Tasks\\`)))

  condition:
    $selection1
}