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Trojan.MulDrop3.29080

Added to the Dr.Web virus database: 2012-01-21

Virus description added:

Technical Information

Malicious functions:
Executes the following:
  • <SYSTEM32>\net.exe stop ccSetMGR /y
  • <SYSTEM32>\net1.exe stop NProtectService /y
  • <SYSTEM32>\net.exe stop NProtectService /y
  • <SYSTEM32>\net1.exe stop ccSetMGR /y
  • <SYSTEM32>\net.exe stop srservice /y
  • <SYSTEM32>\net1.exe stop ccEvtMGR /y
  • <SYSTEM32>\net.exe stop ccEvtMGR /y
  • <SYSTEM32>\net1.exe stop vrmonsvc /y
  • <SYSTEM32>\net.exe stop vrmonsvc /y
  • <SYSTEM32>\net1.exe stop "Sygate Personal Firewall Pro" /y
  • <SYSTEM32>\net.exe stop MonSvcNT /y
  • <SYSTEM32>\net1.exe stop SAVScan /y
  • <SYSTEM32>\net.exe stop SAVScan /y
  • <SYSTEM32>\net1.exe stop MonSvcNT /y
  • <SYSTEM32>\net.exe stop mcupdmgr.exe /y
  • <SYSTEM32>\net1.exe stop MpfService /y
  • <SYSTEM32>\net.exe stop MpfService /y
  • <SYSTEM32>\net1.exe stop mcupdmgr.exe /y
  • <SYSTEM32>\net.exe stop helpsvc /y
  • <SYSTEM32>\net1.exe stop "McAfeeAntiSpyware" /y
  • <SYSTEM32>\net.exe stop "McAfeeAntiSpyware" /y
  • <SYSTEM32>\net1.exe stop "Symantec Network Drivers Service" /y
  • <SYSTEM32>\net.exe stop "Symantec Network Drivers Service" /y
  • <SYSTEM32>\net1.exe stop srservice /y
  • <SYSTEM32>\net.exe stop "norton Unerase Protection" /y
  • <SYSTEM32>\net1.exe stop MskService /y
  • <SYSTEM32>\net.exe stop MskService /y
  • <SYSTEM32>\net1.exe stop "norton Unerase Protection" /y
  • <SYSTEM32>\net.exe stop "norton AntiVirus Firewall Monitor Service" /y
  • <SYSTEM32>\net1.exe stop "SAVScan" /y
  • <SYSTEM32>\net.exe stop "SAVScan" /y
  • <SYSTEM32>\net1.exe stop "norton AntiVirus Firewall Monitor Service" /y
  • <SYSTEM32>\net.exe stop "norton AntiVirus Auto Protect Service" /y
  • <SYSTEM32>\net1.exe stop "norton AntiVirus Auto-Protect Service" /y
  • <SYSTEM32>\net.exe stop "norton AntiVirus Auto-Protect Service" /y
  • <SYSTEM32>\net1.exe stop "Security Center" /y
  • <SYSTEM32>\net.exe stop "Security Center" /y
  • <SYSTEM32>\cmd.exe /c ""%TEMP%\1.tmp\New Text Document.bat""
  • <SYSTEM32>\net.exe stop "Automatic Updates" /y
  • <SYSTEM32>\net1.exe stop "Symantec Core LC" /y
  • <SYSTEM32>\net.exe stop "Symantec Core LC" /y
  • <SYSTEM32>\net1.exe stop "Automatic Updates" /y
  • <SYSTEM32>\net.exe stop "Ahnlab Task Scheduler" /y
  • <SYSTEM32>\net1.exe stop "Symantec SPBBCSvc" /y
  • <SYSTEM32>\net.exe stop "Symantec SPBBCSvc" /y
  • <SYSTEM32>\net1.exe stop "Ahnlab Task Scheduler" /y
  • <SYSTEM32>\net.exe stop "Sygate Personal Firewall Pro" /y
  • <SYSTEM32>\net1.exe stop navapsvc /y
  • <SYSTEM32>\net.exe stop navapsvc /y
  • <SYSTEM32>\net1.exe stop "McAfee Spamkiller Server" /y
  • <SYSTEM32>\net.exe stop "McAfee Spamkiller Server" /y
  • <SYSTEM32>\net1.exe stop "norton AntiVirus Auto Protect Service" /y
  • <SYSTEM32>\net.exe stop "McAfee Personal Firewall Service" /y
  • <SYSTEM32>\net1.exe stop "McAfee SecurityCenter Update Manager" /y
  • <SYSTEM32>\net.exe stop "McAfee SecurityCenter Update Manager" /y
  • <SYSTEM32>\net1.exe stop "McAfee Personal Firewall Service" /y
Modifies file system :
Creates the following files:
  • C:\System Volume Information\_restore{E7F0F64C-F7E5-4319-8757-E9A20C1C4E14}\drivetable.txt
  • %TEMP%\1.tmp\New Text Document.bat

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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