WINSTO.EXE - Dangerous

What you should do about WINSTO.EXE:

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It is possible that your PC could be infected. The file name WINSTO.EXE is used by both safe and unsafe programs.


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What we know about WINSTO.EXE:

The filename WINSTO.EXE was first seen on Sep 25 2007 in SPAIN. It has also been seen in the following geographical regions of the Prevx community:

  • COSTA RICA on Sep 28 2007
  • The UNITED STATES on Sep 25 2007
  • RUSSIAN FEDERATION on Sep 27 2007
  • The UNITED KINGDOM on Sep 27 2007
The filename WINSTO.EXE refers to many versions of an executable program.

The most common file size is 14,913 bytes. But the following file sizes have also been seen:

  • 14,912 bytes
  • 724,992 bytes
  • 354,304 bytes

The unsafe files using this name are associated with the malware group Trojan.Downloader.Some files using the name WINSTO.EXE are also associated with the malware group:
  • Trojan.Nudos
 These files have no vendor, product or version information specified in the file header.

WINSTO.EXE has been seen to perform the following behavior(s):

  • The Process is packed and/or encrypted using a software packing process
  • Adds a Registry Key (RUN) to auto start Programs on system start up
  • Executes a Process
  • Can communicate with other computer systems using HTTP protocols
  • Registers a Dynamic Link Library File
  • Terminates Processes
  • This Process Deletes Other Processes From Disk
  • This Process Creates Other Processes On Disk
  • Executes Processes stored in Temporary Folders
  • Modifies Windows Initialization And System Settings Used On Start up

WINSTO.EXE has been the subject of the following behavior(s):

  • Executed as a Process
  • Executed from Temporary Folders
  • Executed by Internet Explorer
  • Terminated as a Process
  • Deleted as a process from disk
  • Created as a process on disk
  • Added as a Registry auto start to load Program on Boot up
  • Has code inserted into its Virtual Memory space by other programs

WINSTO.EXE can also use the following file names:

  • 47241357.DAT
  • 2131558230.EXE
  • 3834715934.EXE
  • WINSTO.EX#
  • 1079434912.EXE
  • 1969923936.EXE
  • 802662940.EXE
  • 238763982.EXE
  • 768244364.EXE
  • 1671870818.EXE
  • WINSTO.EXE__DELETE_ON_REBOOT
  • 84740134.EXE
  • 39647329.EXE
  • 44908025.EXE
  • 3050562900.EXE
  • 10427722.EXE
  • 4137630588.EXE
  • 1657539746.EXE
  • 53265907.EXE
  • 64236818.EXE
  • 2263287493.EXE
  • 3862967548.EXE
  • 3727244922.EXE
  • 1360439662.EXE
  • 4021366334.EXE
  • 746395414.EXE
  • 439415274.EXE
  • 2163041728.EXE
  • 3003136238.EXE
  • 26782702.EXE
  • 00498825.EXE
  • 85126438.EXE
  • TEMP/1517162102.EXE
  • 1817829200.EXE
  • 2979441662.EXE
  • 514922995.EXE
  • 37169363.DAT
  • 98828121.SVD
  • 40268912.EXE
  • 48720020.EXE
  • 2971310896.EXE
  • 382313804.EXE
  • 485403004.EXE
  • 1109500706.EXE
  • 3887404400.EXE
  • 1354923558.EXE
  • 4277921410.EXE
  • 1138283246.EXE
  • 328416521.EXE
  • 3161732842.EXE
  • 156387704.EXE
  • 62584772.EXE
  • 4025763298.EXE