Prevx Research Division
WINSERVER.EXE
System Back DoorFree PC Cleanup from Webroot
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Associated Malware Groups
The unsafe files using this name are associated with the malware groups:
- System Back Door
- Cloaked Malware
- Malicious Software
File Behavior
WINSERVER.EXE has been seen to perform the following behavior:
- The Process is packed and/or encrypted using a software packing process
- Executes a Process
- Checks for the use of debuggers
- Registers a Dynamic Link Library File
- This process creates other processes on disk
- Creates a new Background Service on the machine
- Uses DNS to retrieve the IP address for web sites
- Adds a Registry Key (RUN) to auto start Programs on system start up
- Disables the built in Windows File Protection System
- Writes to another Process's Virtual Memory (Process Hijacking)
WINSERVER.EXE has been the subject of the following behavior:
- Added as a Registry auto start to load Program on Boot up
- Executed as a Process
- Copied to multiple locations on the system
- Created as a process on disk
- Has code inserted into its Virtual Memory space by other programs
- Terminated as a Process
- Registered as a Dynamic Link Library File
Country Of Origin
The filename WINSERVER.EXE was first seen on Aug 30 2008 in the following geographical regions of the Webroot community:
- Spain on Aug 30 2008
- Brazil on Jun 9 2010
- The United Kingdom on Jun 9 2010
- The United States on May 23 2011
- Canada on Mar 20 2012
File Name Aliases
WINSERVER.EXE can also use the following file names:
- 0.4160471871246224.EXE
- 0.8816669112550302.EXE
- 0.4148859366339067.EXE
- 10193.EXE
- 0.274091272012288FDRGS.EXE
- 45733633.EXE
Filesizes
The following file size has been seen:
- 212,992 bytes
- 82,432 bytes
- 480,256 bytes
- 36,864 bytes
- 556,032 bytes
- 77,312 bytes
- 76,800 bytes
File Type
The filename WINSERVER.EXE refers to many versions of an executable program.
File Activity
One or more files with the name WINSERVER.EXE creates, deletes, copies or moves the following files and folders:
- Creates c:\windows\system32\winserv.ini
- Creates c:\windows\system32\winserv32.dll
- Creates c:\windows\system32\winserv.dll
- Creates c:\windows\system32\perflibs__
Network Activity
One or more files with the name WINSERVER.EXE performs the following network events:
- DNS Lookup1.1.38.1 " resulting_addr=
- DNS Lookup www.securityhost.us
- DNS Lookup wpad
- DNS Lookup1.1.38.1 www.securityhost.us
Website Activity
One or more files with the name WINSERVER.EXE interacts with the following web sites and pages. Web addresses have been deliberately modified to prevent unintentional use.
- Port 80 IP:0.0.0.0
- Port 80 IP:1.1.38.1
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