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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
66 lines
1.6 KiB
Markdown
66 lines
1.6 KiB
Markdown
# API Reference: Hunting for Shadow Copy Deletion
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## python-evtx
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```python
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import Evtx.Evtx as evtx
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with evtx.Evtx("Security.evtx") as log:
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for record in log.records():
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xml_str = record.xml() # full XML of event
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ts = record.timestamp() # datetime object
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```
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## Detection Patterns
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| Pattern | Technique | Severity |
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|---------|-----------|----------|
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| `vssadmin delete shadows` | T1490 | CRITICAL |
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| `wmic shadowcopy delete` | T1490 | CRITICAL |
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| `bcdedit /set recoveryenabled no` | T1490 | HIGH |
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| `wbadmin delete catalog` | T1490 | HIGH |
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| `Win32_ShadowCopy.Delete()` | T1490 | CRITICAL |
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## Splunk SPL
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```spl
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index=wineventlog (EventCode=4688 OR EventCode=1)
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| where match(CommandLine, "(?i)(vssadmin.*delete.*shadows|wmic.*shadowcopy.*delete)")
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| table _time Computer User CommandLine ParentImage
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```
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## KQL (Microsoft Sentinel)
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```kql
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DeviceProcessEvents
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| where ProcessCommandLine has_any ("vssadmin delete shadows", "wmic shadowcopy delete",
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"bcdedit /set", "wbadmin delete catalog")
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| project Timestamp, DeviceName, AccountName, ProcessCommandLine, InitiatingProcessFileName
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```
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## Sigma Rule Format
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```yaml
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title: Shadow Copy Deletion
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logsource:
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category: process_creation
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product: windows
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detection:
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selection:
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Image|endswith: '\vssadmin.exe'
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CommandLine|contains|all:
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- 'delete'
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- 'shadows'
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condition: selection
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level: critical
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tags:
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- attack.impact
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- attack.t1490
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```
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### References
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- MITRE T1490: https://attack.mitre.org/techniques/T1490/
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- python-evtx: https://github.com/williballenthin/python-evtx
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- Sigma Rules: https://github.com/SigmaHQ/sigma
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