I found your post here through a web search and wanted to comment that I got a card with the same code of "MBMCDGVGOFGW-T" that yours has. Everything from your description of the back side is the same except the third line of mine seems to be a different serial number: DHFH179GE640. It's supposed to be a 128GB Samsung EVO+ microSD card, but to my dismay and three days of research and testing, is definitely not what it seems. I purchased it from a seller on eBay who had 18 100% positive feedback points, so didn't feel like there was a risk. That was a mistake.
I am certain this is a counterfeit Samsung microSD card. Indicators are that it fails to write/read properly, appears to overwrite the same sectors when filled beyond a certain point, intermittently fails to format, has hundreds of bad sectors fresh out of the package, and is classified as generic in its hard-coded memory. Also, looking at the card itself, the paint-job is low quality, with blurry edges between colors, text that appears slightly off from official images of the product, and the plastic on the back is black when it should be white.
This is a knockoff product that came in what appeared to be genuine Samsung packaging, meaning either the packaging was smuggled out of the warehouse where it was genuinely made for Samsung, or a skilled forger made it. Since typically counterfeit cards come in cheap packaging, this really helps make the card look genuine. It even has the size of the card on the package, which typical counterfeiters don't do. Other than having slightly misaligned cut-outs for the clear plastic window displaying the card, it's well made.
Yours may also have come with an SD adapter that also has Samsung branding, and this may also be counterfeit. Mine was advertised as being made of aluminum but is definitely plastic.