mirror of
https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git
synced 2026-06-11 13:44:56 +03:00
mukul975
c47eed6a64
- Fix 25 shell=True subprocess calls with list-based commands - Fix 49 verify=False in defensive skills (env-var override) - Add timeout to 231 HTTP/subprocess/socket calls - Fix 6 SQL injection patterns with whitelist validation - Replace 8 __import__() with standard imports - Remove 701 unused imports across 442 files - Add authorized-testing disclaimers to all offensive skills - Complete 11 incomplete skill directories - Expand 10 stub SKILL.md files with full content - Fix 2 YAML parse errors in frontmatter - Fix 5 pre-existing syntax errors - Convert 22 hardcoded paths/ports to environment variables - Back up 21 redundant skill pairs to .bak - Fix 2 global declaration errors - 724/724 skills with full folder anatomy (SKILL.md + agent.py + api-reference.md + LICENSE) - 0 compile errors across all 724 agent.py files
110 lines
4.5 KiB
Python
110 lines
4.5 KiB
Python
#!/usr/bin/env python3
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"""Process hollowing (T1055.012) detection agent.
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Detects hollowed processes by analyzing Sysmon events for suspended process
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creation, memory allocation in remote processes, and thread hijacking.
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"""
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import argparse
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import json
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import re
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from datetime import datetime
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try:
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import Evtx.Evtx as evtx
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except ImportError:
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evtx = None
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COMMONLY_HOLLOWED = {
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"svchost.exe", "explorer.exe", "notepad.exe", "calc.exe",
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"dllhost.exe", "regsvr32.exe", "RuntimeBroker.exe",
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}
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SUSPICIOUS_PARENT_CHILD = [
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("cmd.exe", "svchost.exe"), ("powershell.exe", "svchost.exe"),
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("wscript.exe", "svchost.exe"), ("mshta.exe", "svchost.exe"),
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("winword.exe", "svchost.exe"), ("excel.exe", "svchost.exe"),
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]
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def detect_hollowing_sysmon(filepath):
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if evtx is None:
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return {"error": "python-evtx not installed: pip install python-evtx"}
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findings = []
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with evtx.Evtx(filepath) as log:
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for record in log.records():
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xml = record.xml()
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eid_match = re.search(r'<EventID[^>]*>(\d+)</EventID>', xml)
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if not eid_match:
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continue
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eid = int(eid_match.group(1))
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time_match = re.search(r'SystemTime="([^"]+)"', xml)
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ts = time_match.group(1) if time_match else ""
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if eid == 1:
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image = re.search(r'<Data Name="Image">([^<]+)', xml)
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parent = re.search(r'<Data Name="ParentImage">([^<]+)', xml)
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cmdline = re.search(r'<Data Name="CommandLine">([^<]+)', xml)
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if image and parent:
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img = image.group(1).rsplit("\\", 1)[-1].lower()
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par = parent.group(1).rsplit("\\", 1)[-1].lower()
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for sp, sc in SUSPICIOUS_PARENT_CHILD:
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if par == sp.lower() and img == sc.lower():
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findings.append({
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"event_id": 1, "timestamp": ts,
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"type": "suspicious_parent_child",
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"parent": parent.group(1), "image": image.group(1),
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"cmdline": cmdline.group(1)[:200] if cmdline else "",
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"severity": "HIGH", "mitre": "T1055.012",
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})
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if eid == 8:
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source = re.search(r'<Data Name="SourceImage">([^<]+)', xml)
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target = re.search(r'<Data Name="TargetImage">([^<]+)', xml)
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if target:
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tgt = target.group(1).rsplit("\\", 1)[-1].lower()
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if tgt in COMMONLY_HOLLOWED:
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findings.append({
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"event_id": 8, "timestamp": ts,
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"type": "remote_thread_hollowed_target",
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"source": source.group(1) if source else "",
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"target": target.group(1),
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"severity": "CRITICAL", "mitre": "T1055.012",
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})
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if eid == 10:
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source = re.search(r'<Data Name="SourceImage">([^<]+)', xml)
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target = re.search(r'<Data Name="TargetImage">([^<]+)', xml)
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access = re.search(r'<Data Name="GrantedAccess">([^<]+)', xml)
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if target and access:
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tgt = target.group(1).rsplit("\\", 1)[-1].lower()
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mask = access.group(1).lower()
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if tgt in COMMONLY_HOLLOWED and mask in ("0x1fffff", "0x1f3fff"):
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findings.append({
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"event_id": 10, "timestamp": ts,
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"type": "full_access_hollowed_target",
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"source": source.group(1) if source else "",
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"target": target.group(1), "access": mask,
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"severity": "CRITICAL", "mitre": "T1055.012",
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})
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return findings
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def main():
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parser = argparse.ArgumentParser(description="Process Hollowing Detector")
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parser.add_argument("--sysmon-log", required=True, help="Sysmon EVTX file")
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args = parser.parse_args()
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findings = detect_hollowing_sysmon(args.sysmon_log)
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if isinstance(findings, dict) and "error" in findings:
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results = findings
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else:
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results = {
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"timestamp": datetime.utcnow().isoformat() + "Z",
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"findings": findings, "total_findings": len(findings),
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}
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print(json.dumps(results, indent=2))
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if __name__ == "__main__":
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main()
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