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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
88 lines
2.2 KiB
Markdown
88 lines
2.2 KiB
Markdown
# API Reference: Ransomware Precursor Detection
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## Zeek (Bro) conn.log Fields
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### Tab-separated Fields
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| Index | Field | Description |
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|-------|-------|-------------|
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| 0 | ts | Timestamp |
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| 1 | uid | Connection UID |
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| 2 | id.orig_h | Source IP |
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| 3 | id.orig_p | Source port |
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| 4 | id.resp_h | Destination IP |
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| 5 | id.resp_p | Destination port |
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| 6 | proto | Protocol (tcp/udp) |
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| 7 | service | Detected service |
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| 8 | duration | Connection duration |
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| 9 | orig_bytes | Bytes from originator |
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| 10 | resp_bytes | Bytes from responder |
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## Ransomware-Associated Network Indicators
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### Ports
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| Port | Service | Risk |
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|------|---------|------|
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| 445 | SMB | Lateral movement, EternalBlue |
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| 3389 | RDP | Brute force, initial access |
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| 4444 | Metasploit default | C2 callback |
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| 135 | RPC | WMI lateral movement |
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| 5985/5986 | WinRM | Remote execution |
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## Windows Event Log IDs
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### Security Log
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| Event ID | Description |
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|----------|-------------|
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| 4625 | Failed logon (brute force indicator) |
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| 4624 | Successful logon (type 3 = network) |
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| 4648 | Explicit credential logon |
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| 4672 | Special privileges assigned |
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### System Log
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| Event ID | Description |
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|----------|-------------|
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| 7036 | Service state change (VSS) |
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| 7045 | New service installed |
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### PowerShell Operational Log
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| Event ID | Description |
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|----------|-------------|
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| 4104 | Script block logging |
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| 4103 | Module logging |
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## Shadow Copy Deletion Commands
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```
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vssadmin delete shadows /all /quiet
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wmic shadowcopy delete
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bcdedit /set {default} recoveryenabled no
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bcdedit /set {default} bootstatuspolicy ignoreallfailures
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wbadmin delete catalog -quiet
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```
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## Suricata Rules for Ransomware Detection
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```
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alert smb any any -> $HOME_NET 445 (msg:"ET EXPLOIT EternalBlue";
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content:"|ff|SMB|73|"; sid:2024217; rev:3;)
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alert tcp $HOME_NET any -> any 443 (msg:"Ransomware C2 beacon";
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flow:established,to_server; content:"POST";
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pcre:"/\/[a-z]{4,8}\/[a-f0-9]{32}/i"; sid:9000001;)
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```
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## CrowdStrike Falcon API — IOC Search
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```http
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GET https://api.crowdstrike.com/indicators/queries/iocs/v1
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Authorization: Bearer {token}
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Content-Type: application/json
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?types=domain&values=malicious-domain.com
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```
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### Response
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```json
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{
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"resources": ["indicator_id_1"],
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"meta": {"query_time": 0.005}
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}
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```
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