Hackers Gain Fileless Persistence on Targeted SQL Servers Using a Built-in Utility
May 18, 2022
Microsoft on Tuesday warned that it recently spotted a malicious campaign targeting SQL Servers that leverages a built-in PowerShell binary to achieve persistence on compromised systems. The intrusions, which leverage brute-force attacks as an initial compromise vector, stand out for their use of the utility " sqlps.exe ," the tech giant said in a series of tweets. The ultimate goals of the campaign are unknown, as is the identity of the threat actor staging it. Microsoft is tracking the malware under the name " SuspSQLUsage ." The sqlps.exe utility, which comes by default with all versions of SQL Servers, enables an SQL Agent — a Windows service to run scheduled tasks — to run jobs using the PowerShell subsystem. "The attackers achieve fileless persistence by spawning the sqlps.exe utility, a PowerShell wrapper for running SQL-built cmdlets, to run recon commands and change the start mode of the SQL service to LocalSystem," Microsoft noted. Addi
