Prevx Research Division
41.EXE
Cloaked MalwareFree PC Cleanup from Webroot
Use Webroot SecureAnywhere to remove 41.EXE.
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Associated Malware Groups
The unsafe files using this name are associated with the malware group:
- Cloaked Malware
File Behavior
41.EXE has been seen to perform the following behavior:
- Enables an In Process Object/Server - Common with DLL Injections
- Creation and Registers a Browser Helper Object in Internet Explorer
- Adds a Registry Key (RUN) to auto start Programs on system start up
- This process creates other processes on disk
- Registers a Dynamic Link Library File
- This Process Deletes Other Processes From Disk
- Creates new folders in the file system
- Uses DNS to retrieve the IP address for web sites
- Executes a Process
- Writes to another Process's Virtual Memory (Process Hijacking)
- Can communicate with other computer systems using HTTP protocols
- Creates system tray popups, messages, errors and security warnings
- The Process is packed and/or encrypted using a software packing process
- Executes Processes stored in Temporary Folders
- Creates or uses a background service to access the Internet using HTTP protocols
- Injects code into other processes
41.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
- Deleted as a process from disk
- Executed from Temporary Folders
- Terminated as a Process
- Executed by Internet Explorer
Country Of Origin
The filename 41.EXE was first seen on Oct 22 2007 in the following geographical regions of the Webroot community:
- India on Oct 22 2007
- Spain on Oct 30 2007
- China on Oct 30 2007
- on Aug 27 2008
- Canada on Sep 11 2008
- The United States on Sep 14 2008
- Russian Federation on May 13 2012
File Name Aliases
41.EXE can also use the following file names:
- ILAN213V41.EXE
- TMP63B1.TMP
- 41[1].EXE
- S4Q0
- 18467.EXE
- 90794102.TXT
Filesizes
The following file size has been seen:
- 11,599 bytes
- 153,764 bytes
- 163,773 bytes
- 444,416 bytes
- 100,000 bytes
- 90,653 bytes
- 273,513 bytes
File Type
The filename 41.EXE is used by multiple object types including objects,executable programs.
File Activity
One or more files with the name 41.EXE creates, deletes, copies or moves the following files and folders:
- Deletes c:\docume~1\user\locals~1\temp\nsh7.tmp
- Creates c:\docume~1\user\locals~1\temp\nsh9.tmp
- Deletes c:\docume~1\user\locals~1\temp\nsxB.tmp
- Creates c:\docume~1\user\locals~1\temp\nsxb.tmp\System.dll
- Creates c:\windows\system32\xdjrtecswiaartg.dll
- Creates c:\docume~1\user\locals~1\temp\nsxb.tmp\NSISdl.dll
- Creates c:\docume~1\user\locals~1\temp\activation_key
- Deletes c:\docume~1\user\locals~1\temp\activation_key
- Opens/modifes c:\autoexec.bat
- 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-1-5-21-1017937101-3376078148-572454927-1003
- Deletes c:\docume~1\user\locals~1\temp\nsxb.tmp\NSISdl.dll
- Deletes c:\docume~1\user\locals~1\temp\nsxb.tmp\System.dll
- Creates c:\docume~1\user\locals~1\temp\9597_appcompat.txt
- Creates c:\docume~1\user\locals~1\temp\19FF4.dmp
Network Activity
One or more files with the name 41.EXE performs the following network events:
- DNS Lookup85.92.152.44 mysidesearch.com
Website Activity
One or more files with the name 41.EXE interacts with the following web sites and pages. Web addresses have been deliberately modified to prevent unintentional use.
- TCP:127.0.0.1:1094 Port:17
- Port 80 IP:85.92.152.44
- Port 80 IP:85.92.157.141
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