TA0010 · EXFILTRATION
Exfiltration Over Web Service
Dropbox, Google Drive, Mega, Discord, and pastebin-style services used as drop points.
Detect it with
Large uploads to personal cloud storage from servers; DLP policies on unsanctioned storage domains.
Why it matters on shift
Exfiltration Over Web Service is one of the concrete ways adversaries achieve exfiltration. Recognising it in telemetry lets you name the technique in your ticket and pivot to what came before and after.
What to look for next
After exfiltration, the next tactic is usually Impact. Search your telemetry for the transition before closing the ticket.
4 sub-techniques
How it shows up in practice
- T1567.001
Exfiltration to Code Repository
Adversaries may exfiltrate data to a code repository rather than over their primary command and control channel. Code repositories are often accessible via an API (ex: https://api.github.com).
- T1567.002
Exfiltration to Cloud Storage
Adversaries may exfiltrate data to a cloud storage service rather than over their primary command and control channel. Cloud storage services allow for the storage, edit, and retrieval of data from a remote cloud storage server over the Internet.
- T1567.003
Exfiltration to Text Storage Sites
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.
- T1567.004
Exfiltration Over Webhook
Adversaries may exfiltrate data to a webhook endpoint rather than over their primary command and control channel.
Kill-chain context