Data stealing trojan posing as a configuration file

March 18, 2016

The Dell SonicWall Threats Research team has received reports of a data stealing Trojan posing as a configuration file. Upon execution, the trojan steals information from the system and also capable of downloading more files on to the system.

Infection Cycle:

The Trojan has the following icon:

The Trojan has the origin in China and the following properties:

It modifies registry for running after reboot:

  • HKU%%softwaremicrosoftwindowscurrentversionrunguazhuan "C:windowstempsample.exe" -autorun
  • It creates multiple threads replicating the sample using different commands:

    The malware contacts the following domains:

    Once the CnC server is connected, it steals the following information and sends it to the server.

    It also makes the following requests to the server:

    The trojan makes multiple requests to the server and downloads various dat files and configuration files.

    The trojan creates C:UsersAdminAppDataRoamingLSinglePro with configuration settings for a Search Engine.

    The trojan makes multiple search requests and downloads javascript files on to the machine.

    Overall, this Trojan is capable of sending sensitive information out to a remote server.We urge our users to always be vigilant and cautious with any unsolicited attachments specially if you are not certain of the source.

    Dell SonicWALL Gateway AntiVirus provides protection against this threat with the following signature:

    • GAV:Graftor.B_74 (Trojan)