Wanted

ShaгePoint Online

Rogue MRA-2019-0008

1 letter in this name is Cyrillic, so it can pass as a name you'd trust.

What's known

Application ID
a43a3d51-c821-4b86-9a63-fbc775120fc2
Owner tenant ID
eac37962-c0fa-45a7-99cc-ba9d1c921e18
Found
2019, 7 years ago. The year the source last saw it, and the only date on record.
Reply URLs (defanged)
hxxps://achilleshosting[.]website
hxxps://achilleshosting[.]website/login
hxxps://products[.]office[.]com/en-us/sharepoint/collaboration

Where this comes from

If it's in your tenant

These commands find it, show which permissions it was granted, then disable it. Disabling keeps the app and its audit trail for your investigation, so remove it afterwards. Then review what it accessed and revoke the sessions of anyone who consented.

Connect-MgGraph -Scopes "Application.ReadWrite.All"
$sp = Get-MgServicePrincipal -Filter "appId eq 'a43a3d51-c821-4b86-9a63-fbc775120fc2'"
$sp | Format-List DisplayName, Id, AppId, AccountEnabled
Get-MgServicePrincipalOauth2PermissionGrant -ServicePrincipalId $sp.Id
Update-MgServicePrincipal -ServicePrincipalId $sp.Id -AccountEnabled:$false