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