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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
64 lines
1.7 KiB
Markdown
64 lines
1.7 KiB
Markdown
# API Reference: Detecting Evasion Techniques in Endpoint Logs
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## Key Windows Event IDs for Evasion
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| Event ID | Source | Evasion Technique |
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|----------|--------|-------------------|
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| 1102 | Security | Audit log cleared (T1070.001) |
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| Sysmon 2 | Sysmon | Timestomping (T1070.006) |
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| Sysmon 8 | Sysmon | CreateRemoteThread (T1055) |
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| Sysmon 10 | Sysmon | Process Access / LSASS (T1003) |
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| 4688 | Security | Process creation with cmdline |
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## python-evtx Usage
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```python
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import Evtx.Evtx as evtx
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with evtx.Evtx("Sysmon.evtx") as log:
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for record in log.records():
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xml = record.xml()
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# Parse EventID, CommandLine, SourceImage, TargetImage
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```
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## Evasion Detection Patterns
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```python
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# Log clearing
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r"wevtutil\s+(cl|clear-log)"
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r"Clear-EventLog"
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# Security tool disable
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r"Set-MpPreference\s+-DisableRealtimeMonitoring\s+\$true"
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r"sc\s+(stop|delete)\s+WinDefend"
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# AMSI bypass
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r"[Ref].Assembly.GetType.*AMSI"
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r"amsiInitFailed"
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```
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## MITRE ATT&CK TA0005 Techniques
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| Technique | ID | Detection |
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|-----------|----|-----------|
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| Indicator Removal | T1070 | Log clearing, file deletion |
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| Timestomping | T1070.006 | Sysmon Event ID 2 |
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| Process Injection | T1055 | Sysmon Event ID 8 |
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| Impair Defenses | T1562.001 | AV/EDR disabling commands |
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| AMSI Bypass | T1562.001 | PowerShell AMSI patching |
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## Splunk SPL Detection
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```spl
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index=sysmon (EventCode=2 OR EventCode=8 OR EventCode=10)
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| eval technique=case(
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EventCode=2, "Timestomping",
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EventCode=8, "Process Injection",
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EventCode=10, "Process Access")
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| stats count by technique, SourceImage, Computer
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```
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## CLI Usage
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```bash
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python agent.py --evtx-file Sysmon.evtx
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python agent.py --evtx-file Security.evtx
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```
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