Prevx Research Division
UNINST.EXE
Fraudulent Security ProgramFree PC Cleanup from Webroot
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Associated Malware Groups
The unsafe files using this name are associated with the malware groups:
- Fraudulent Security Program
- Malicious Software
File Behavior
UNINST.EXE has been seen to perform the following behavior:
- Executes a Process
- Writes to another Process's Virtual Memory (Process Hijacking)
- Can communicate with other computer systems using HTTP protocols
- This process creates other processes on disk
- This Process Deletes Other Processes From Disk
- Executes Processes stored in Temporary Folders
- The Process is packed and/or encrypted using a software packing process
- The Process is polymorphic and can change its structure
- Hooks the WININET.DLL function allowing it to read or copy Http and Https web page content and session information
- Creates new folders on the system
- Copies files
- Changes the Windows Security Center to stop Antivirus status alerts from being displayed
- Changes the Windows Security Center to stop Firewall status alerts from being displayed
- Changes the Windows Security Center to stop Firewall override alerts from being displayed
- Changes the Windows Security Center to stop warnings from being displayed if automatic Windows Updates are not enabled
- Injects code into other processes
- Modifies firewall settings, without user permission so it is not blocked from accessing the Internet
- Disables safe mode on your PC
- Creates a new Background Service on the machine
- Creates a Toolbar Extension for Internet Explorer
- Creation and Registers a Browser Helper Object in Internet Explorer
- Disables the Notification Balloon for the Windows Security Center
- Disables Access to the Windows Registry Editior
- Disables Access to the Task Manager built into Windows
- Modifies Windows Security Policies to restrict/expand User Privileges on the machine
- Automatically changes your firewall settings to allow itself or other programs to communicate over the internet
- Adds products to the system registry
UNINST.EXE has been the subject of the following behavior:
- Executed as a Process
- Created as a process on disk
- Deleted as a process from disk
- Has code inserted into its Virtual Memory space by other programs
- Terminated as a Process
- Victim of a Heap Based Buffer Overflow Exploit
- Copied to multiple locations on the system
- Executed from Temporary Folders
Country Of Origin
The filename UNINST.EXE was first seen on May 8 2007 in the following geographical regions of the Webroot community:
- Italy on May 8 2007
- The United States on May 8 2007
- Europe on Jun 2 2007
- Poland on May 7 2008
- Russian Federation on Oct 4 2009
- Philippines on Sep 14 2010
- The United Kingdom on Sep 14 2010
- Turkey on May 25 2012
File Name Aliases
UNINST.EXE can also use the following file names:
- SPINSTALL.EXE
- AU_.EXE
- $RKN1MGK.EXE
Filesizes
The following file size has been seen:
- 226,304 bytes
- 473,544 bytes
- 90,340 bytes
- 41,221 bytes
- 305,155 bytes
- 15,360 bytes
- 67,981 bytes
- 116,447 bytes
File Type
The filename UNINST.EXE refers to many versions of an executable program.
File Activity
One or more files with the name UNINST.EXE creates, deletes, copies or moves the following files and folders:
- Deletes c:\docume~1\user\locals~1\temp\nsj7.tmp
- Creates c:\docume~1\user\locals~1\temp\nsz9.tmp
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Au_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Bu_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Cu_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Du_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Eu_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Fu_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Gu_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Hu_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Iu_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Ju_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Ku_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Lu_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Mu_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Nu_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Ou_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Pu_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Qu_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Ru_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Su_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Tu_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Uu_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Vu_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Wu_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Xu_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Yu_.exe
- Deletes c:\docume~1\user\locals~1\temp\~nsu.tmp\Zu_.exe
- Deletes c:\docume~1\user\locals~1\temp\nsaE.tmp
- Creates c:\docume~1\user\locals~1\temp\nsq10.tmp
- Deletes c:\docume~1\user\locals~1\temp\nsl12.tmp
- Creates c:\docume~1\user\locals~1\temp\nsl12.tmp\System.dll
- Creates c:\docume~1\user\locals~1\temp\nsl12.tmp\nsProcess.dll
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