Prevx Research Division
"MAHELPER.EXE"
Malicious SoftwareFree PC Cleanup from Webroot
Use Webroot SecureAnywhere to remove MAHELPER.EXE.
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Associated Malware Groups
The filename is associated with the malware group:
- Malicious Software
File Behavior
MAHELPER.EXE has been seen to perform the following behavior:
- Registers a Dynamic Link Library File
- This Process is a file infector which modifies program files to include a copy of the infection
- Executes a Process
- This Process Deletes Other Processes From Disk
- Drops known malicious software during execution
- Includes file creation code which could be used to test for interception by security products
- Found on infected systems and resists interrogation by security products
- Changes the Internet Explorer Home Page Settings
- Uses rootkit techniques to conceal its presence, interrogation or removal
MAHELPER.EXE has been the subject of the following behavior:
- Deleted as a process from disk
- Executed as a Process
- 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
- Executed by Internet Explorer
- Terminated as a Process
Country Of Origin
The filename MAHELPER.EXE was first seen on Jun 9 2009 in the following geographical regions of the Webroot community:
- on Jun 9 2009
- Vietnam on Jun 9 2009
- Iceland on Jul 13 2009
- Belgium on Aug 5 2009
- Romania on Sep 8 2009
- The United States on Apr 14 2011
File Name Aliases
MAHELPER.EXE can also use the following file names:
- PILLA.EXE
- 98611294.EXE
- 06133537.EXE
- 88913027.EXE
Filesizes
The following file size has been seen:
- 222,651 bytes
- 163,840 bytes
- 86,016 bytes
- 167,936 bytes
File Type
The filename MAHELPER.EXE refers to many versions of an executable program.
File Activity
One or more files with the name MAHELPER.EXE creates, deletes, copies or moves the following files and folders:
- create folder C:\WINDOWS\uninstall\
- Creates c:\windows\uninstall\rundl132.exe
- Creates c:\windows\Logo1_.exe
- Deletes c:\docume~1\user\locals~1\temp\$$aB.bat
- Creates c:\docume~1\user\locals~1\temp\$$aB.bat
- Creates c:\_desktop.ini
- Creates c:\windows\RichDll.dll
- Deletes c:\PREVXEDGEFREE.EXE
- Creates c:\PREVXEDGEFREE.EXE
- Moves c:\PREVXEDGEFREE.EXE to c:\PREVXEDGEFREE.EXE
- Deletes c:\mbr\scan.exe
- Creates c:\mbr\scan.exe
- Moves c:\mbr\scan.exe to c:\mbr\scan.exe
- Deletes c:\program files\ati technologies\uninstallall\AtiCimUn.exe
- Creates c:\program files\ati technologies\uninstallall\AtiCimUn.exe
- Moves c:\program files\ati technologies\uninstallall\AtiCimUn.exe to c:\program files\ati technologies\uninstallall\AtiCimUn.exe
- Deletes c:\program files\intel\ncs2\wmiprov\ncs2prov.exe
- Creates c:\program files\intel\ncs2\wmiprov\ncs2prov.exe
- Moves c:\program files\intel\ncs2\wmiprov\ncs2prov.exe to c:\program files\intel\ncs2\wmiprov\ncs2prov.exe
- Deletes c:\program files\intel\ncs2\wmiprov\NCSDiag.exe
- Creates c:\program files\intel\ncs2\wmiprov\NCSDiag.exe
- Moves c:\program files\intel\ncs2\wmiprov\NCSDiag.exe to c:\program files\intel\ncs2\wmiprov\NCSDiag.exe
- Deletes c:\program files\msn\msncorefiles\install\msnsusii.exe
- Creates c:\program files\msn\msncorefiles\install\msnsusii.exe
- Moves c:\program files\msn\msncorefiles\install\msnsusii.exe to c:\program files\msn\msncorefiles\install\msnsusii.exe
- Deletes c:\program files\msn\msncorefiles\install\msn9components\Digcore.exe
- Creates c:\program files\msn\msncorefiles\install\msn9components\Digcore.exe
- Moves c:\program files\msn\msncorefiles\install\msn9components\Digcore.exe to c:\program files\msn\msncorefiles\install\msn9components\Digcore.exe
- Deletes c:\program files\msn\msncorefiles\install\msn9components\Msncli.exe
- Creates c:\program files\msn\msncorefiles\install\msn9components\Msncli.exe
- Moves c:\program files\msn\msncorefiles\install\msn9components\Msncli.exe to c:\program files\msn\msncorefiles\install\msn9components\Msncli.exe
- Deletes c:\program files\realtek\installshield\ChCfg.exe
- Creates c:\program files\realtek\installshield\ChCfg.exe
- Moves c:\program files\realtek\installshield\ChCfg.exe to c:\program files\realtek\installshield\ChCfg.exe
- Deletes c:\program files\realtek\installshield\RtlUpd.exe
- Creates c:\program files\realtek\installshield\RtlUpd.exe
- Moves c:\program files\realtek\installshield\RtlUpd.exe to c:\program files\realtek\installshield\RtlUpd.exe
- Deletes c:\program files\realtek\installshield\RtlUpd64.exe
- Creates c:\program files\realtek\installshield\RtlUpd64.exe
- Moves c:\program files\realtek\installshield\RtlUpd64.exe to c:\program files\realtek\installshield\RtlUpd64.exe
- Deletes c:\program files\winpcap\rpcapd.exe
- Creates c:\program files\winpcap\rpcapd.exe
- Moves c:\program files\winpcap\rpcapd.exe to c:\program files\winpcap\rpcapd.exe
- Deletes c:\program files\winpcap\Uninstall.exe
- Creates c:\program files\winpcap\Uninstall.exe
- Moves c:\program files\winpcap\Uninstall.exe to c:\program files\winpcap\Uninstall.exe
- Creates c:\docume~1\user\locals~1\temp\5a44_appcompat.txt
- Creates c:\docume~1\user\locals~1\temp\25EDF.dmp
- Opens/modifes c:\autoexec.bat
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