Whiffy Recon Malware Dropped by Smoke Loader Botnet

A new piece of malware dubbed Whiffy Recon is a Wi-Fi scanning payload being leveraged by threat actors to triangulate the geolocation of compromised devices. Whiffy Recon is being distributed by the threat actors behind the infamous Smoke Loader botnet. The Smoke Loader botnet family is a modular backdoor with a wide range of capabilities, mainly used by threat actors to drop payloads at scale in the early stages of a compromise. The threat actors are using Whiffy Recon to triangulate the positions of infected devices by scanning for nearby Wi-Fi access points, and then using Google’s geolocation service API to send the longitude and latitude of the infected devices back to the attackers. By utilizing the nearby Wi-fi access points, Whiffy Recon can triangulate the device location even if the device does not have a GPS system, giving attackers an edge when conducting region-based attacks. The malware maintains persistence on the compromised device by creating a “wlan.Ink” shortcut that points to the Whiffy Recon malware’s location on the system. Although the motive is currently unclear, Whiffy Recon could potentially be utilized by threat actors to conduct mass intimidation campaigns, pressuring victims into meeting the cybercriminals’ demands. Researchers have stated that based on the initial POST request to the C2 server, it is likely that the developers of this malware will be upgrading it over time. CTIX continues to report on new and interesting attack techniques and may release an update to this piece in future FLASH reports if novel findings arise.