what is .um folder in Android Folder

[Android Central Question]

What is the .um file?
I'm looking through my files in android folder. and I noticed a .um folder with a sysid.dat file, In Android folder was three folders.
Data. in data i see folder which i mention up!^^ with dot (.)um i dont have any malware!
obb
obj. with the same a sysid.dat file name. and I didn't know what it was. Is there any files I should be looking for that could be a virus?
i do reset, and flashing soft. dont helped folder there be still. when i delete folder , foldet goes back!
so why these folders creating automatic?? i never see before like 3years ago.

 

[B. Diddy]

Welcome to Android Central! This thread suggests it's related to Umeng, which is a Chinese data analytics company: https://github.com/kingsollyu/AppEnv-Kotlin/issues/11. It looks like it's associated with Alipay, which is a gigantic Chinese digital payment company, so it seems legitimate.