ID	B0014
Objective(s)	Discovery
Related ATT&CK Techniques	None
Version	2.1
Created	1 August 2019
Last Modified	12 June 2023

SMTP Connection Discovery

Malware may test whether an outgoing SMTP connection can be made from the system on which the malware instance is executing to some SMTP server, by sending a test SMTP transaction.

Use in Malware

Name	Date	Method	Description
Snake	2004	--	Snake attempts to login to an attacker controlled SMTP server before sending information. [1]

References

[1] https://www.cybereason.com/blog/research/threat-analysis-report-snake-infostealer-malware