The "Wizzards" of Adware
Summary: Cisco Talos analyzed a .NET executable it called a Generic Trojan and found an install base of roughly 12 million machines, with the software running under administrator rights and able to harvest personal information and download and launch executables sent by its operators. The sample, traced back through a User-Agent to the OneSoftPerDay adware signed by a certificate owned by French tutorial site Tuto4PC, loaded a module called Wizzupdater that checked for analysis tools, virtual machines, VNC ports 5900-5904 and antivirus processes before executing, and exited without changes when those checks returned true.
Bottom line: Twelve million machines running software with administrator rights and a remote download-and-execute channel is a standing install base an operator can task without user interaction. The sample's checks for debugging tools, VM artifacts and antivirus processes exist for one reason: to stay unquarantined on the machines it already owns.
Read the original at Cisco Talos ↗
- Topics
- Malware
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