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Added to the Dr.Web virus database: 2012-06-18

Virus description added:

A two-component Trojan consisting of an executable file and a dynamic-link library. It is distributed through the Andromeda botnet. Once the Trojan penetrates a computer, it creates HKCU\Software\AppDataLow_wu2_133 to store its data.

Then the malware copies itself to %appdata%\Ms_dir_\msvcrt.exe registering the file in HKCU\Software\Microsoft\Windows\CurrentVersion\Run\msvcrt_.

Using HKCU\Software\AppDataLow_wu2_133\installed or by comparing HKCU\Software\AppDataLow_wu2_133\path with the executable path, the Trojan checks whether it is installed on the system or not.

Then the Trojan runs its copy and injects a self-removal code into the svchost.exe process. The malware uses %temp%\log.tmp to log events.

According to a predefined template, the Trojan searches for data in the files stored on all drives of the infected computer (except for the A: drive) ignoring the following file types: .avi, .jpg, .exe, .bat, .reg, .jpeg, .ico, .html, .hlp, .php, .asp, .bmp, .mov, .mp2, .mp3, .mp4, and .wav. It encrypts all the information it manages to find and sends the data to one of the servers run by cybercriminals. Server addresses are stored in the Trojan's body.

The main objective of Trojan.PWS.Banker.64540 is to embed the library into Internet Explorer. The library performs web injections when,,, and are loaded in browser windows.

Curing recommendations

  1. If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space.
  2. If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.
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After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

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  1. If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
  2. If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
    • Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
    • Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
    • Switch off your device and turn it on as normal.

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