Prevx Research Division
CSTRIKE.EXE
Cloaked MalwareFree PC Cleanup from Webroot
Use Webroot SecureAnywhere to remove CSTRIKE.EXE.
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Associated Malware Groups
The unsafe files using this name are associated with the malware groups:
- Cloaked Malware
- Malicious Software
- Worm
File Behavior
CSTRIKE.EXE has been seen to perform the following behavior:
- Executes a Process
- 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
- Writes to another Process's Virtual Memory (Process Hijacking)
- Adds products to the system registry
- Automatically changes your firewall settings to allow itself or other programs to communicate over the internet
- Hooks the WININET.DLL function allowing it to read or copy Http and Https web page content and session information
- 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
- Disables safe mode on your PC
- Injects code into other processes
- Creates a new Background Service on the machine
- The Process is packed and/or encrypted using a software packing process
- Violates Windows/Vista Physical Memory Protection allowing it to look inside the data areas of other programs
- Adds a Registry Key (RUN) to auto start Programs on system start up
- Changes to the file command map within the registry
- Disables the built in Windows File Protection System
- This process creates other processes on disk
- Can communicate with other computer systems using HTTP protocols
- Sets processes to start during user logon
- Looks at the contents of the autoexec.bat file
- Reads email address and phone book details
- The Process is polymorphic and can change its structure
CSTRIKE.EXE has been the subject of the following behavior:
- Executed as a Process
- Deleted as a process from disk
- Created by processes which appear to be checking for interception by security products
- Created as a process on disk
- Has code inserted into its Virtual Memory space by other programs
- Added as a Registry auto start to load Program on Boot up
- Changes to the file command map within the registry
Country Of Origin
The filename CSTRIKE.EXE was first seen on Jul 13 2007 in the following geographical regions of the Webroot community:
- Romania on Jul 13 2007
- Europe on Feb 20 2008
- Italy on Feb 20 2008
- Malaysia on Jul 17 2008
- Spain on Jun 16 2009
- Philippines on Sep 13 2010
- The United Kingdom on Sep 13 2010
- Morocco on Feb 10 2012
File Name Aliases
CSTRIKE.EXE can also use the following file names:
- COUNTER - STRIKE 1.6.EXE
- COUNTER-STRIKE.EXE
- SHELL.EXE
- MSDTO.EXE
- HL.EXE
- DC1639~1.EXE
- COUNTER-STRIKE
- 37377435.EXE
- 07645453.EXE
Filesizes
The following file size has been seen:
- 149,646 bytes
- 288,288 bytes
- 215,150 bytes
- 118,784 bytes
- 946,176 bytes
- 17,408 bytes
- 40,960 bytes
File Type
The filename CSTRIKE.EXE refers to many versions of an executable program.
File Activity
One or more files with the name CSTRIKE.EXE creates, deletes, copies or moves the following files and folders:
- Opens/modifes c:\autoexec.bat
- Creates c:\windows\system32\msdto.exe
- Creates c:\windows\system32\cstrike.exe
- Creates c:\windows\system32\shell.exe
Website Activity
One or more files with the name CSTRIKE.EXE interacts with the following web sites and pages. Web addresses have been deliberately modified to prevent unintentional use.
- TCP:127.0.0.1:1086 Port:21
- Port 80 IP:221.195.42.71
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