[metadata]
creation_date = "2020/11/19"
maturity = "production"
updated_date = "2020/11/19"

[rule]
author = ["Elastic"]
description = "Identifies execution of a suspicious program via scheduled tasks by looking at process lineage and command line usage."
false_positives = ["Legitimate scheduled tasks running third party software."]
from = "now-9m"
index = ["winlogbeat-*", "logs-endpoint.events.*"]
language = "eql"
license = "Elastic License"
name = "Suspicious Execution via Scheduled Task"
risk_score = 43
rule_id = "5d1d6907-0747-4d5d-9b24-e4a18853dc0a"
severity = "medium"
tags = ["Elastic", "Host", "Windows", "Threat Detection", "Persistence"]
type = "eql"

query = '''
process where event.type == "start" and
    /* Schedule service cmdline on Win10+ */
    process.parent.name : "svchost.exe" and process.parent.args : "Schedule" and
    /* add suspicious programs here */
    process.pe.original_file_name in
                                (
                                  "cscript.exe",
                                  "wscript.exe",
                                  "PowerShell.EXE",
                                  "Cmd.Exe",
                                  "MSHTA.EXE",
                                  "RUNDLL32.EXE",
                                  "REGSVR32.EXE",
                                  "MSBuild.exe",
                                  "InstallUtil.exe",
                                  "RegAsm.exe",
                                  "RegSvcs.exe",
                                  "msxsl.exe",
                                  "CONTROL.EXE",
                                  "EXPLORER.EXE",
                                  "Microsoft.Workflow.Compiler.exe",
                                  "msiexec.exe"
                                  ) and
    /* add suspicious paths here */
    process.args : (
       "C:\\Users\\*",
       "C:\\ProgramData\\*", 
       "C:\\Windows\\Temp\\*", 
       "C:\\Windows\\Tasks\\*", 
       "C:\\PerfLogs\\*", 
       "C:\\Intel\\*", 
       "C:\\Windows\\Debug\\*", 
       "C:\\HP\\*")
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1053"
name = "Scheduled Task/Job"
reference = "https://attack.mitre.org/techniques/T1053/"


[rule.threat.tactic]
id = "TA0003"
name = "Persistence"
reference = "https://attack.mitre.org/tactics/TA0003/"

