T1048 Exfiltration Over Alternative Protocol — ATT&CK Technique
Adversaries may steal data by exfiltrating it over a different protocol than that of the existing command and control channel. The data may also be sent to an alternate network location from the main command and control server. Alternate protocols include FTP, SMTP, HTTP/S, DNS, SMB, or any other network protocol not being used as the main command and control channel. Adversaries may also opt to encrypt and/or obfuscate these alternate channels. Exfiltration Over Alternative Protocol can be done using various common operating system utilities such as Net/SMB or FTP. On macOS and Linux curl may be used to invoke protocols such as HTTP/S or FTP/S to exfiltrate data from a system. Many IaaS and SaaS platforms (such as Microsoft Exchange, Microsoft SharePoint, GitHub, and AWS S3) support the direct download of files, emails, source code, and other sensitive information via the web console or Cloud API.
Detection coverage (17)
- Winscp Execution From Non Standard Folder medium
- FTP Connection Open Attempt Via Winscp CLI medium
- PUA - Restic Backup Tool Execution high
- DNS TOR Proxies medium
- Tap Driver Installation - Security low
- Tap Driver Installation medium
- Powershell DNSExfiltration high
- Data Export From MSSQL Table Via BCP.EXE medium
- Copy From Or To Admin Share Or Sysvol Folder medium
- Tap Installer Execution medium
- Suspicious Redirection to Local Admin Share high
- Ollama Possible Model Exfiltration Data Leakage
- O365 DLP Rule Triggered
- DNS Exfiltration Using Nslookup App
- Excessive Usage of NSLOOKUP App
- Prohibited Network Traffic Allowed
- TanStack Supply-Chain Attack DNS Indicators medium