File Investigation Report
NTASVR[n].EXE
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Associated Malware Groups
The unsafe files using this name are associated with the malware group:
- Malware Downloader
File Behavior
NTASVR[n].EXE has been seen to perform the following behavior:
- Downloads hidden code from covert web sites
- Downloads program file(s) and other content from the web
- 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
- Adds a Registry Key (RUN) to auto start Programs on system start up
- Executes a Process
- The process hooks code into all running processes which could allow it to take control of the system or record keyboard input, mouse activity and screen contents
- Can communicate with other computer systems using HTTP protocols
- Registers a Dynamic Link Library File
- Adds products to the system registry
- Writes to another Process's Virtual Memory (Process Hijacking)
- This Process Deletes Other Processes From Disk
- This process creates other processes on disk
NTASVR[n].EXE has been the subject of the following behavior:
- Added as a Registry auto start to load Program on Boot up
- Created as a new Background Service on the machine
- Executed as a Process
- This program is often downloaded from the web
- Created as a process on disk
- Has code inserted into its Virtual Memory space by other programs
- Downloaded from covert web sites without the user knowing
Country Of Origin
The filename NTASVR[n].EXE was first seen on Jun 24 2008 in the following geographical regions of the Prevx community:
- Korea, Republic of on Jun 24 2008
- Spain on Jun 24 2008
File Name Aliases
NTASVR[n].EXE can also use the following file name:
- NTASVR.EXE
- NTASVR[1].EXE
- 56291951.EXE
Filesizes
The following file size has been seen:
- 140,664 bytes
- 320,992 bytes
File Type
The filename NTASVR[n].EXE refers to many versions of an executable program.
File Activity
One or more files with the name NTASVR[n].EXE creates, deletes, copies or moves the following files and folders:
- Opens/modifes c:\autoexec.bat
Website Activity
One or more files with the name NTASVR[n].EXE interacts with the following web sites and pages. Web addresses have been deliberately modified to prevent unintentional use.
- 211 .234 .239 .48 / upload / autosearch_n / klv .ini
- 211 .234 .239 .48 / upload / autosearch_n / efver .ini
- TCP:127.0.0.1:1097 Port:19
- Port 80 IP:211.234.239.48
- Port 80 IP:203.226.255.215
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