Prevx Research Division
FAST.EXE
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Associated Malware Groups
The unsafe files using this name are associated with the malware groups:
- Malicious Software
- Malware Downloader
File Behavior
FAST.EXE has been seen to perform the following behavior:
- Writes to another Process's Virtual Memory (Process Hijacking)
- Disables the Notification Balloon for the Windows Security Center
- Disables Access to the Task Manager built into Windows
- Disables Access to the Windows Registry Editior
- Modifies Windows Security Policies to restrict/expand User Privileges on the machine
- Executes a Process
- 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
- Found on infected systems and resists interrogation by security products
- Uses rootkit techniques to conceal its presence, interrogation or removal
- The Process is polymorphic and can change its structure
- Can communicate with other computer systems using HTTP protocols
- This process creates other processes on disk
- Adds a Registry Key (RUN) to auto start Programs on system start up
- Makes outbound connections to other computers using NETBIOSOUT protocols
- Executes Processes stored in Temporary Folders
- This Process Deletes Other Processes From Disk
- Modifies the Windows Host File which could be used to stop you visiting specific web sites by redirecting you to alternative addresses without you knowing
- Downloads hidden code from covert web sites
- Downloads program file(s) and other content from the web
- Registers a Dynamic Link Library File
- Looks at the contents of the autoexec.bat file
- Reads email address and phone book details
- Visits web sites on your PC without you knowing
- Enables an In Process Object/Server - Common with DLL Injections
FAST.EXE has been the subject of the following behavior:
- Created as a process on disk
- Executed as a Process
- Has code inserted into its Virtual Memory space by other programs
- Added as a Registry auto start to load Program on Boot up
- Executed from Temporary Folders
- Deleted as a process from disk
- Terminated as a Process
- Registered as a Dynamic Link Library File
Country Of Origin
The filename FAST.EXE was first seen on May 3 2007 in the following geographical regions of the Webroot community:
- Europe on May 3 2007
- Hungary on May 3 2007
- The United States on May 26 2007
- The United Kingdom on Nov 25 2010
- South Africa on May 22 2012
File Name Aliases
FAST.EXE can also use the following file names:
- OLE32INIT.EXE
- WOWEXEC.EXE
- WUACLT.EXE
- SMSS.EXE
- WINLOGON.EXE
- CMD.EXE
- NETDDE.EXE
- CHKDSK.EXE
- WUAUBOOT.EXE
- SERVICES.EXE
- WUAUCLT.EXE
- SVCHOST.EXE
- RUNDLL32.EXE
- MSCONFIG.EXE
- MSIEXEC.EXE
- ATTRIB.EXE
- NSLOOKUP.EXE
- MMC.EXE
- JAVAW.EXE
- LOGONUI.EXE
- REGSVR32.EXE
Filesizes
The following file size has been seen:
- 54,272 bytes
- 81,408 bytes
- 45,752 bytes
- 71,680 bytes
- 11,024 bytes
File Type
The filename FAST.EXE refers to many versions of an executable program.
File Activity
One or more files with the name FAST.EXE creates, deletes, copies or moves the following files and folders:
- create folder C:\Program Files\Common Files\?icrosoft.NET
- Opens/modifes c:\autoexec.bat
- Creates c:\progra~1\common~1\icroso~1.net\logonui.exe
- Creates c:\progra~1\common~1\icroso~1.net\icroso~1.net\ctxad-582.000
- Creates c:\documents and settings\user\application data\Microsof
- Creates c:\documents and settings\user\application data\microsoft\Crypt
- Creates c:\documents and settings\user\application data\microsoft\crypto\RS
- Creates c:\documents and settings\user\application data\microsoft\crypto\rsa\S-1-5-21-3766738458-954458941-2556246048-100
- Creates c:\docume~1\user\locals~1\temp\ctxad.exe
- Deletes c:\docume~1\user\locals~1\temp\nsj20.tmp
- Creates c:\docume~1\user\locals~1\temp\NDrv.dll
- Creates c:\documents and settings\user\application data\Microsoft
- Creates c:\documents and settings\user\application data\microsoft\Crypto
- Creates c:\documents and settings\user\application data\microsoft\crypto\RSA
- Creates c:\documents and settings\user\application data\microsoft\crypto\rsa\S-1-5-21-3766738458-954458941-2556246048-1003
- Copies filec:\docume~1\user\locals~1\temp\NDrv.dll to c:\windows\system32\vzn.dll
- Deletes c:\docume~1\user\locals~1\temp\NDrv.dll
- Creates c:\docume~1\user\locals~1\temp\NDrv.exe
Website Activity
One or more files with the name FAST.EXE interacts with the following web sites and pages. Web addresses have been deliberately modified to prevent unintentional use.
- TCP:127.0.0.1:1093 Port:17
- Port 80 IP:63.251.135.26
- Remote server connection to cu .outerinfo .co
- TCP:127.0.0.1:1097 Port:20
- Port 80 IP:63.251.135.16
- Port 80 IP:8.15.231.92
- Port 80 IP:8.15.231.4
- Port 80 IP:63.251.135.17
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