This threat is classified as a trojan dropper. As its name suggests, a dropper trojan contains malicious or potentially unwanted software which it ‘drops’ and installs on the affected system.TrojanDropper:Win32/Rotbrow.A installs a backdoor which allows remote, surreptitious access to infected systems. TrojanDropper:Win32/Rotbrow.A may then be used by remote attackers to upload and install further malicious or potentially unwanted software on the system.
How do I remove TrojanDropper:Win32/Rotbrow.A?
TrojanDropper:Win32/Rotbrow.A Uninstall Instruction
Step1: Backup Reminder: Always be sure to back up your PC before making any changes
Step 2: Press Ctrl+Alt+Del keys together and stop TrojanDropper:Win32/Rotbrow.A processes in the Windows Task Manager.
random.exe
Step 3: Open the Registry Editor, search for and delete these Registry Entries creating by TrojanDropper:Win32/Rotbrow.A
%AppData%[ TrojanDropper:Win32/Rotbrow.A]toolbardtx.ini
%AppData%[ TrojanDropper:Win32/Rotbrow.A]toolbarguid.dat
%AppData%[ TrojanDropper:Win32/Rotbrow.A]toolbarlog.txt

More at: http://blog.teesupport.com/trojandropperwin32rotbrow-a-virus-removal-tips/

Learn more about how to remove virus at:https://www.youtube.com/user/MrRemoveVirus

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