Snowflake customer accounts raided with infostealer credentials (Ticketmaster, AT&T and others)

A financially motivated group Mandiant tracks as UNC5537 logged into Snowflake customer accounts using credentials stolen by infostealer malware, some dating back to 2020, on accounts without MFA or network allow lists. It then stole data and extorted the victims. Mandiant and Snowflake notified about 165 potentially exposed organizations. Victims included Ticketmaster/Live Nation and AT&T, which said call and text records of nearly all its cellular customers were taken. Mandiant found no breach of Snowflake's own enterprise environment.

Why this severity: Mass data theft and extortion across ~165 organizations

Started

Apr 14, 2024

Closed

Jul 12, 2024

• #Snowflake
• #Ticketmaster
• #AT&T
• Infostealer
• Data breach
• #Extortion
• #MFA