Storm-1286 conducts large-scale spamming using password spraying on accounts without MFA and legacy auth protocols.
Analyst brief
Storm-1286 is a threat actor focused on large-scale spamming operations. It primarily targets user accounts lacking multifactor authentication (MFA) by leveraging password spraying attacks. The actor utilizes legacy authentication protocols such as IMAP and SMTP to spread spam, and historically attempted to compromise admin accounts to create malicious LOB applications. Defenders should prioritize enforcing MFA, blocking legacy authentication protocols, and monitoring non-privileged user accounts for anomalous spamming activities.
Storm-1286
unknown
Storm-1286 is a threat actor that engages in large-scale spamming activities, primarily targeting user accounts without multifactor authentication enabled. They employ password spraying attacks to compromise these accounts and utilize legacy authentication protocols like IMAP and SMTP. In the past, they have attempted to compromise admin accounts and create new LOB applications with high administrative permissions to spread spam. Despite previous actions taken by Microsoft Threat Intelligence, Storm-1286 continues to explore new methods to establish a high-scale spamming platform within victim organizations using non-privileged users.