LoFP / automated scripts or processes that use azcopy for routine data transfers from azure storage accounts.

Techniques

• T1567

Sample rules

Azure Storage Blob Retrieval via AzCopy

• source: elastic
• technicques:
  • T1567

Description

Identifies successful GetBlob operations on Azure Storage Accounts using AzCopy user agent with SAS token authentication. AzCopy is a command-line utility for copying data to and from Azure Storage. While legitimate for data migration, adversaries may abuse AzCopy with compromised SAS tokens to exfiltrate data from Azure Storage Accounts. This rule detects the first occurrence of GetBlob operations from a specific storage account using this pattern.

Detection logic

event.dataset: azure.platformlogs and
    event.action: GetBlob and
    azure.platformlogs.identity.type: SAS and
    azure.platformlogs.properties.userAgentHeader: AzCopy* and
    azure.platformlogs.statusCode: 200