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mukul975
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Complete skill folder anatomy across all cybersecurity skills: - scripts/agent.py: 80-150 line Python agents using real libraries (impacket, boto3, azure-mgmt-*, kubernetes, pefile, yara, scapy, shodan, stix2, etc.) - references/api-reference.md: real API documentation with method signatures - LICENSE: MIT license for all skill folders
1.9 KiB
1.9 KiB
API Reference: Hunting for Suspicious Scheduled Tasks
Windows Event IDs
| Event ID | Source | Description |
|---|---|---|
| 4698 | Security | Scheduled task created |
| 4699 | Security | Scheduled task deleted |
| 4702 | Security | Scheduled task updated |
| 106 | TaskScheduler | Task registered |
| 200/201 | TaskScheduler | Task executed / completed |
python-evtx
import Evtx.Evtx as evtx
import xml.etree.ElementTree as ET
with evtx.Evtx("Security.evtx") as log:
for record in log.records():
root = ET.fromstring(record.xml())
ns = {"ns": "http://schemas.microsoft.com/win/2004/08/events/event"}
eid = root.find(".//ns:EventID", ns).text
if eid == "4698":
data = {d.get("Name"): d.text
for d in root.findall(".//ns:Data", ns)}
Splunk SPL
index=wineventlog EventCode=4698
| spath output=TaskName path=EventData.TaskName
| spath output=TaskContent path=EventData.TaskContent
| where NOT match(TaskName, "\\\\Microsoft\\\\Windows\\\\")
| where match(TaskContent, "(?i)(powershell|cmd|wscript|http)")
| table _time Computer SubjectUserName TaskName TaskContent
KQL (Microsoft Sentinel)
SecurityEvent
| where EventID == 4698
| extend TaskContent = tostring(EventData.TaskContent)
| where TaskContent has_any ("powershell", "cmd.exe", "Temp", "AppData")
| project TimeGenerated, Computer, Account, TaskContent
PowerShell Enumeration
Get-ScheduledTask | Where-Object {
$_.Actions.Execute -match 'powershell|cmd|wscript' -or
$_.Actions.Execute -match '\\Temp\\|\\AppData\\'
} | Select-Object TaskName, TaskPath, @{N='Action';E={$_.Actions.Execute}}
References
- MITRE T1053.005: https://attack.mitre.org/techniques/T1053/005/
- python-evtx: https://github.com/williballenthin/python-evtx
- Sigma rules for schtasks: https://github.com/SigmaHQ/sigma