Change the default permissions for the files created by the WebLogic process

We have agrirecovery application running on Weblogic 12.1.3. It has a java process which creates files on the Linux server.

We find out the process who create the file with unique permissions (-rw-r-----).It dose not allow the group to write or execute permissions.

Even if the parent folder has read writing performance group, the weblogic process creates with only read access to the group.

Also, if you create a folder under the same parent using Linux command he created with read, write, execute access to the group.

We want to know if it is controlled by weblogic config? And is there a way that we can fix this issue