Hi Wolstech,
Following up on this thread; wanted to flag something I found while cleaning up after the recent incident, in case it's useful for your records.
While reviewing my ngo.helioho.st site (a separate, non-WordPress domain on this account) I found two files that don't belong there: a heavily obfuscated backdoor named mac.php (last modified June 11, ~7:49 PM), and an injected index.php containing a remote-eval payload pulling from 63.141.235.34, plus a redirect to a suspicious shortened link, swiy.co/goodrich555 (modified June 13, ~7:07–7:12 AM). Both timestamps are before your review where you mentioned nothing looked suspicious outside lda.ng, so this looks like it's from the same intrusion window, just on a domain that isn't WordPress and may not have been part of that check.
Tried backuing up existing WP installs like ths.helioho, but i encounter Host Build interrupts sue to things like allowed runtime and PHP max execution.
I've already renamed both files to .infected to disable them and remove them from execution and I'm restoring a clean copy of that site myself. I'm not asking for another account-wide reset; this is contained and I'm handling it, but since I don't have shell access to search file contents across the rest of the account, Since this looks like leftover from the same incident rather than a new one, I wanted to flag it rather than sit on it. Would it be possible to do a targeted check for similar files on my other domains rather than a full account reset?-since the rest of the account otherwise appears unaffected. Happy to send over the exact file contents if that helps your scan.
Thanks again for the help.