I have a suspicious query

Hi 

i have  (PostgreSQL) 13.16 (Debian 13.16-0+deb11u1)

While monitoring active queries, I came across the following:

`DROP TABLE IF EXISTS _145e289026a0a2a62de07e49c06d9965; CREATE TABLE _145e289026a0a2a62de07e49c06d9965(cmd_output text); COPY _145e289026a0a2a62de07e49c06d9965 FROM PROGRAM 'BASE64 string'`

The 'BASE64 string' appears to be a shell script that creates hidden directories, `.xdiag` and `.xperf`, in `/tmp`.

Could you please help me locate and clean these? I apologize if this is not the appropriate contact for this issue.

Thanks,

Edmundo