The filing basis is 1(b).
This is a prime example of why I just don't believe things that people say when they ask questions about stuff they found in the USPTO database, and why it is dangerous to make assumptions about whatever people are trying to ask.
This went from a "newly registered trademark" to a "pending intent-to-use application" with more time and effort than a confidential consultation would actually take.
Now, sometimes ITU's are filed as a matter of convenience, in order to get something on file when the attorney may or may not have a date of first use handy from the client, since the filing basis can be amended later. So, it still requires some investigation other than looking at stuff in the USPTO database, since looking at that stuff is not helping you very much anyway.
But if it is, in fact, a mark that they haven't used, in an application which hasn't been examined, then some relevant questions are what sort of a mark is it, and is it likely to be refused for one of several reasons. And, no, I wouldn't take on faith someone else's characterization of whether the proposed mark is suggestive, descriptive, or generic, absent that person having substantial experience with trademarks, because domainers throw those words around with wide inaccuracy.
In general, would you win a UDRP dispute if YOU acquired the domain name prior to any use of a corresponding mark by someone else? Yes, you would. The UDRP requires that the domain name be registered in bad faith. If there was no trademark at the time (which is a separate question from whether the mark was registered), then the domain name could not have been registered in bad faith relative to a non-existent mark. There are some exceptions where the timing of the domain registration suggests the domain registrant had reason to know that a mark would be forthcoming, such as by inside information or media announcements.
There is life beyond the UDRP, however. Is it possible for a later-filed trademark registration application to substantially wipe out the value of an unused domain name with few other useful applications? Sure. Let's say I register PogoDonut.com, and don't use that domain name for anything. Then, someone comes along and opens a chain of Pogo Donut shops, selling donuts, and they use pogodonutshop.com. They file a trademark registration application for their POGO DONUT name for donut shops and register their mark. Now, they aren't going to be able to do anything about my pogodonut.com domain name in a UDRP. However, there is no one who is going to want to buy the domain name, and if I start using it for donuts, then I'm going to be infringing their mark. My unused domain name has become worthless to anyone but them.
But looking at things in the USPTO database is not going to answer many relevant questions for you. Whether someone has a trademark and been using it can have
NOTHING to do "things in the USPTO database". The USPTO database can provide some helpful information, but only if you understand what you are looking at, which most persons who post here do not.