mirror of
https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git
synced 2026-07-20 06:20:58 +03:00
95 lines
2.9 KiB
Markdown
95 lines
2.9 KiB
Markdown
# Standards and Frameworks Reference
|
|
|
|
## Cobalt Strike Beacon Configuration Fields
|
|
|
|
### Configuration TLV Types
|
|
| Type ID | Field Name | Data Type | Description |
|
|
|---------|-----------|-----------|-------------|
|
|
| 0x0001 | BeaconType | Short | 0=HTTP, 1=Hybrid HTTP/DNS, 8=HTTPS, 10=TCP Bind |
|
|
| 0x0002 | Port | Short | C2 communication port |
|
|
| 0x0003 | SleepTime | Int | Beacon callback interval in milliseconds |
|
|
| 0x0005 | Jitter | Short | Percentage of sleep time randomization (0-99) |
|
|
| 0x0008 | C2Server | String | Comma-separated C2 domains/IPs |
|
|
| 0x0009 | UserAgent | String | HTTP User-Agent header value |
|
|
| 0x000a | PostURI | String | URI for HTTP POST requests |
|
|
| 0x000d | SpawnTo_x86 | String | 32-bit process to spawn for post-ex |
|
|
| 0x000e | SpawnTo_x64 | String | 64-bit process to spawn for post-ex |
|
|
| 0x001a | Watermark | Int | License watermark identifier |
|
|
| 0x0024 | PipeName | String | Named pipe for SMB beacon |
|
|
| 0x001d | HostHeader | String | HTTP Host header value |
|
|
| 0x0032 | ProxyHostname | String | Proxy server address |
|
|
|
|
### XOR Encoding Scheme
|
|
- **Cobalt Strike 3.x**: XOR key = 0x69
|
|
- **Cobalt Strike 4.x**: XOR key = 0x2e
|
|
- Configuration blob size: 4096 bytes (typical)
|
|
- Encoding: Single-byte XOR across entire config blob
|
|
|
|
### Stageless Beacon Structure
|
|
- PE with beacon code in .data section
|
|
- 4-byte XOR key applied to .data section content
|
|
- Configuration embedded after beacon code
|
|
- Reflective DLL loader prepended to beacon
|
|
|
|
## MITRE ATT&CK Mappings
|
|
|
|
### Cobalt Strike Techniques (S0154)
|
|
| Technique | ID | Description |
|
|
|-----------|-----|------------|
|
|
| Application Layer Protocol | T1071.001 | HTTP/HTTPS C2 communication |
|
|
| Encrypted Channel | T1573.002 | AES-256 encrypted C2 |
|
|
| Ingress Tool Transfer | T1105 | Download additional payloads |
|
|
| Process Injection | T1055 | Inject into spawned processes |
|
|
| Named Pipes | T1570 | SMB beacon lateral movement |
|
|
| Service Execution | T1569.002 | PSExec-style lateral movement |
|
|
| Reflective Code Loading | T1620 | In-memory beacon loading |
|
|
|
|
## Malleable C2 Profile Structure
|
|
|
|
### HTTP GET Block
|
|
```
|
|
http-get {
|
|
set uri "/path";
|
|
client {
|
|
header "Accept" "text/html";
|
|
metadata {
|
|
base64url;
|
|
prepend "session=";
|
|
header "Cookie";
|
|
}
|
|
}
|
|
server {
|
|
header "Content-Type" "text/html";
|
|
output {
|
|
print;
|
|
}
|
|
}
|
|
}
|
|
```
|
|
|
|
### HTTP POST Block
|
|
```
|
|
http-post {
|
|
set uri "/submit";
|
|
client {
|
|
id {
|
|
uri-append;
|
|
}
|
|
output {
|
|
base64;
|
|
print;
|
|
}
|
|
}
|
|
server {
|
|
output {
|
|
print;
|
|
}
|
|
}
|
|
}
|
|
```
|
|
|
|
## References
|
|
- [Cobalt Strike Documentation](https://hstechdocs.helpsystems.com/manuals/cobaltstrike/)
|
|
- [Malleable C2 Profile Reference](https://hstechdocs.helpsystems.com/manuals/cobaltstrike/current/userguide/content/topics/malleable-c2_main.htm)
|
|
- [MITRE ATT&CK Cobalt Strike](https://attack.mitre.org/software/S0154/)
|