Birthday Reminder looks benign but the devil’s in the details: Hooks DNS, serves dodgy ads

The strange behavior of a simple Windows application caught our attention and sparked ESET’s analysis of previously undocumented malware. A contact at the Norwegian HealthCERT —  following a question about this from the regional healthcare provider Sykehuspartner — reached out to us asking about DNS queries to domains with the format [0-9a-f]{60}.smoke. There is no .smoketop level domain, … More Birthday Reminder looks benign but the devil’s in the details: Hooks DNS, serves dodgy ads