Unknown Traffic From 178.128.253.67

Source IP	Country	Method	URI	Tag	FirstSeen	LastSeen	count
178.128.253.67	Netherlands	POST	/tbl_add.php?action=%22BaseInfo%22&u=%22NTA0ODUzNTI2ODU2Njc1NDU3Njk1NTY2NjU1MTQ5NzA=%22	Possible Lazarus Malware Related	2019-07-09T18:09:42Z	2019-07-10T15:37:52Z	114

/tbl_add.php?action="BaseInfo"&u="NTA0ODUzNTI2ODU2Njc1NDU3Njk1NTY2NjU1MTQ5NzA="
Base64 decodes to:
50485352685667545769556665514970

The only information I can find on this particular path is an IOC mentioned in a write-up of Lazarus (APT group) malware tool that used it to send messages to the C2 server:
https://medium.com/@quoscient/new-evidence-might-link-lazarus-tool-found-in-chile-redbanc-intrusion-to-previous-attacks-in-764f757a12ef
https://www.flashpoint-intel.com/blog/disclosure-chilean-redbanc-intrusion-lazarus-ties/
@bad_packets