Prevx Research Division
F[1].EXE
Cloaked MalwareFree PC Cleanup from Webroot
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Associated Malware Groups
The unsafe files using this name are associated with the malware groups:
- Cloaked Malware
- Malicious Software
- Worm
- Malware Downloader
File Behavior
F[1].EXE has been seen to perform the following behavior:
- Writes to another Process's Virtual Memory (Process Hijacking)
- Can communicate with other computer systems using HTTP protocols
- Executes a Process
- This process creates other processes on disk
- Injects code into other processes
- Found on infected systems and resists interrogation by security products
- The Process is packed and/or encrypted using a software packing process
- Downloads hidden code from covert web sites
- Looks at the contents of the autoexec.bat file
- Reads email address and phone book details
- Adds a Registry Key (RUN) to auto start Programs on system start up
- Injects code into other processes
- This Process Deletes Other Processes From Disk
- Uses rootkit techniques to conceal its presence, interrogation or removal
F[1].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
- Terminated as a Process
- Deleted as a process from disk
- Executed by Internet Explorer
- Executed from Temporary Folders
- Added as a Registry auto start to load Program on Boot up
- Copied to multiple locations on the system
- Registered as a Dynamic Link Library File
Country Of Origin
The filename F[1].EXE was first seen on Oct 16 2007 in the following geographical regions of the Webroot community:
- Italy on Oct 16 2007
- The United States on Aug 21 2008
- Europe on Aug 21 2008
- Spain on Apr 20 2009
- Israel on May 6 2009
- Mexico on Mar 12 2010
- Ecuador on Mar 12 2010
- Iran, Islamic Republic of on Jul 7 2011
- South Africa on Apr 9 2012
File Name Aliases
F[1].EXE can also use the following file names:
- XXL[1].EXE
- WINDOWS[1].EXE
- KKK[1].EXE
- CCD[1].EXE
- NHUJLX[1].EXE
- NJUHS[1].EXE
- NBY[1].EXE
- MJI[1].EXE
- UJL[1].EXE
- PPIK[1].EXE
- LINDOWS[1].EXE
- ACLEANER.EXE
- ORZ.EXE
- SVCH0ST.PIF
- WINIT32.EXE
- WINMAP32.EXE
- SMSS.EXE
- SAMPLE_SET 015 (nn).EXE
- MRG-6607..EXE
- F[2].EXE
- 0.EXE
- F.EXE
- 55.EXE
- 30197803
- 51770.EXE
- 19875354.EXE
Filesizes
The following file size has been seen:
- 86,016 bytes
- 40,960 bytes
- 39,963 bytes
- 7,912 bytes
- 174,302 bytes
- 72,704 bytes
- 40,448 bytes
- 19,456 bytes
File Type
The filename F[1].EXE refers to many versions of an executable program.
File Activity
One or more files with the name F[1].EXE creates, deletes, copies or moves the following files and folders:
- Opens/modifes c:\autoexec.bat
- Creates c:\windows\system32\hguest.exe
Network Activity
One or more files with the name F[1].EXE performs the following network events:
- DNS Lookup204.13.69.11 www.msnupdateslive.com
Website Activity
One or more files with the name F[1].EXE interacts with the following web sites and pages. Web addresses have been deliberately modified to prevent unintentional use.
- TCP:127.0.0.1:1101 Port:17
- Port 80 IP:204.13.69.11
- TCP:127.0.0.1:1137 Port:1
- TCP:216.239.59.103:443 Port:21
- Port 80 IP:66.102.9.99
- Port 80 IP:216.239.59.147
- TCP:216.239.59.112:443 Port:28
- TCP:216.239.59.112:443 Port:28
- TCP:64.233.179.110:443 Port:31
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