Exfiltration Over Web Service: Exfiltration to Text Storage Sites
- ID
- T1567.003
- Tactics
- TA0010 Exfiltration
- Sub-technique of
- T1567 Exfiltration Over Web Service
- Platforms
- Linux, macOS, Windows, ESXi
- Data sources
- File Access, Network Connection Creation, Process Creation, Command Execution, Network Traffic Content, Network Traffic Flow
- Source
- attack.mitre.org
- MITRE last modified
- 16 Apr 2025
Adversaries may exfiltrate data to text storage sites instead of their primary command and control channel. Text storage sites, such as pastebin[.]com, are commonly used by developers to share code and other information.
Text storage sites are often used to host malicious code for C2 communication (e.g., Stage Capabilities), but adversaries may also use these sites to exfiltrate collected data. Furthermore, paid features and encryption options may allow adversaries to conceal and store data more securely.[1]
**Note:** This is distinct from Exfiltration to Code Repository, which highlight access to code repositories via APIs.
Detection
- DET0284 Detection Strategy for Exfiltration to Text Storage Sites
Data components: File Access, Network Connection Creation, Process Creation, Command Execution, Network Traffic Content, Network Traffic Flow
Mitigations (1)
- M1021 Restrict Web-Based Content
Web proxies can be used to enforce an external network communication policy that prevents use of unauthorized external services.