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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
56 lines
1.9 KiB
Markdown
56 lines
1.9 KiB
Markdown
# API Reference — Hunting for Living-off-the-Land Binaries
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## Libraries Used
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- **elasticsearch** (elasticsearch-py): Query Elastic SIEM for LOLBin process events
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- **python-evtx** (Evtx): Parse Windows EVTX event logs for Sysmon process creation
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- **re**: Regex matching against suspicious command-line argument patterns
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## CLI Interface
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```
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python agent.py hunt --es-host <url> --index <pattern> [--api-key <key>] [--hours <n>]
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python agent.py sysmon --evtx-file <path>
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```
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## Core Functions
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### `hunt_lolbins_elastic(es_host, es_index, api_key=None, hours=24)`
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Queries Elasticsearch for 12 LOLBin binaries with suspicious argument patterns.
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**Parameters:**
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| Name | Type | Description |
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|------|------|-------------|
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| `es_host` | str | Elasticsearch host URL |
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| `es_index` | str | Index pattern (default: `logs-*`) |
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| `api_key` | str | Optional API key |
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| `hours` | int | Lookback window in hours |
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**Returns:** dict with `detections` list (each with `binary`, `mitre`, `count`, `events`).
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### `scan_sysmon_log(evtx_file)`
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Parses Sysmon EVTX logs for Event ID 1 (Process Creation) matching LOLBin names.
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**Parameters:**
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| Name | Type | Description |
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|------|------|-------------|
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| `evtx_file` | str | Path to Sysmon .evtx file |
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**Returns:** dict with `lolbin_events` count and `findings` list.
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## LOLBins Covered
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| Binary | MITRE Technique | Suspicious Pattern Examples |
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|--------|----------------|---------------------------|
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| certutil.exe | T1140, T1105 | `-urlcache`, `-decode`, `-encode` |
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| mshta.exe | T1218.005 | `vbscript:`, `javascript:`, HTTP URLs |
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| regsvr32.exe | T1218.010 | `/s /n /u /i:`, `scrobj.dll` |
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| rundll32.exe | T1218.011 | `javascript:`, `shell32.dll` |
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| bitsadmin.exe | T1197 | `/transfer`, `/download` |
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| wmic.exe | T1047 | `process call create`, `/node:` |
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| powershell.exe | T1059.001 | `-enc`, `IEX`, `DownloadString`, `-w hidden` |
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## Dependencies
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```
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pip install elasticsearch>=8.0 python-evtx
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```
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