Suspicious Data Exfiltration via Blat SMTP Client (via process_creation)

ATT&CK techniques

Collection → Exfiltration

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
- T1560Archive Collected Data
C2
Exfiltration
- T1048Exfiltration Over Alternative Protocol
Impact

What it detects

This rule detects execution of the Blat command-line SMTP utility with mail-sending arguments, the exfiltration channel used in the phishing campaign against Russian aerospace organizations to ship collected data to an attacker mailbox. Adversaries abuse Blat as a lightweight LOLBin to email staged archives over SMTP while avoiding heavier tooling, making its appearance a strong indicator of automated data theft.

Reporting behind it

Related detections9 linkedT1048 — drag to rearrange

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Suspicious Data Exfiltration via Blat SMTP Client (via process_creation)

Pivot detection · T1048 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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