File Investigation Report
REGSVR.EXE
Cloaked MalwarePC Cleanup in 3 Easy Steps
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Associated Malware Groups
The unsafe files using this name are associated with the malware group:
- Cloaked Malware
File Behavior
REGSVR.EXE has been seen to perform the following behavior:
- Registers a Dynamic Link Library File
- The Process is packed and/or encrypted using a software packing process
- Modifies Windows Security Policies to restrict/expand User Privileges on the machine
- This Process Deletes Other Processes From Disk
- This process creates other processes on disk
- Disables the built in Windows File Protection System
- Adds a Registry Key (RUN) to auto start Programs on system start up
- Disables Access to the Task Manager built into Windows
- Disables Access to the Windows Registry Editior
- Executes a Process
- Can communicate with other computer systems using HTTP protocols
- Checks for the use of debuggers
- Sets processes to start during user logon
- Creates a new Background Service on the machine
- 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
- Creates, modifies or schedules batch jobs
- Writes to another Process's Virtual Memory (Process Hijacking)
- Creates new folders in the file system
- Creates new folders on the system
- Copies files
- Injects code into other processes
- Adds products to the system registry
- Enables an In Process Object/Server - Common with DLL Injections
- Disables the Notification Balloon for the Windows Security Center
- Automatically changes your firewall settings to allow itself or other programs to communicate over the internet
- Executes Processes stored in Temporary Folders
- Terminates Processes
REGSVR.EXE has been the subject of the following behavior:
- Created as a process on disk
- Executed as a Process
- Deleted as a process from disk
- Executed from Temporary Folders
- Copied to multiple locations on the system
- Created by processes which appear to be checking for interception by security products
- Added as a Registry auto start to load Program on Boot up
- Has code inserted into its Virtual Memory space by other programs
Country Of Origin
The filename REGSVR.EXE was first seen on May 19 2007 in the following geographical regions of the Prevx community:
- CHILE on May 19 2007
- FRANCE on May 19 2007
- SPAIN on May 24 2007
- INDIA on Feb 9 2008
- The EUROPEAN UNION on Nov 5 2009
- VIET NAM on Nov 8 2009
File Name Aliases
REGSVR.EXE can also use the following file names:
- PVCGY461.EXE
- STARTUP.EXE
- TEMP.EXE
- MOF.EXE
- WINHELP.EXE
- DESKTOP.EXE
- WINDOWS.EXE
- SYSTEM32.EXE
- DRIVERS.EXE
- WBEM.EXE
- WEBTEMPDIR.EXE
- ADMINISTRATOR.EXE
- PROGRAM FILES.EXE
- COMMON FILES.EXE
- TEMPORARY INTERNET FILES.EXE
- CONTENT.IE5.EXE
- APPLICATION DATA.EXE
- NEW FOLDER.EXE
- GLAR09A3.EXE
- CONTENT.MSO.EXE
- CONTENT.WORD.EXE
- W08T0CK1.EXE
- OFFLINE.EXE
- TALLY.EXE
- PHOTO.EXE
- DICITIONERY.EXE
- NEW BRIEFCASE.EXE
- WBALANCE4.EXE
- DATA.EXE
- TALLY.ERP9.EXE
- NEW FOLDER .EXE
- VAARANAM.AAYIRAM.2008.TAMIL.MP3-MAJAA.NET.EXE
- DRIVEGUARD .EXE
- SYSTEM .EXE
- LANG .EXE
- WINDOWS .EXE
- CONTROLS .EXE
- MSFT .EXE
- POLICY .EXE
- NETWORKING .EXE
- DXMRTP .EXE
- RTCRES .EXE
- DEFAULT .EXE
- GDIPLUS .EXE
- WINDOWS XP HOME SP2 [OEM EDITION] .EXE
- BOOT.IMAGES .EXE
- DOTNETFX .EXE
- ASMS .EXE
- RTCDLL .EXE
- COMCTL .EXE
- COMMON .EXE
- MSWINCRT .EXE
- DRW .EXE
- WIN9XMIG .EXE
- ACROBAT .EXE
- CMMGR .EXE
- DMICALL .EXE
- EASTMAN .EXE
- HPTOOLS .EXE
- IBMAV .EXE
- SYMBOLS .EXE
- RETAIL .EXE
- SYMBOLS.PRI.EXE
- DLL .EXE
- MAPI .EXE
- EX40A .EXE
- EX40SP4 .EXE
- EX50SP2 .EXE
- MSGQUEUE .EXE
- MSP .EXE
- NECPA .EXE
- OCTOPUS .EXE
- PRINT .EXE
- BLAINF .EXE
- ENTINF .EXE
- SRVINF .EXE
- RUMBA .EXE
- TRANSACT .EXE
- WMP .EXE
- WINNTUPG .EXE
- MODEMSHR .EXE
- DIGI .EXE
- ISDN .EXE
- BRI .EXE
- REALPORT .EXE
- EQN .EXE
- SPX .EXE
- TIGERJET .EXE
- PERINF .EXE
- SUPPORT .EXE
- TOOLS .EXE
- MGMT .EXE
- WBEMODBC .EXE
- NETBEUI .EXE
- NTBACKUP .EXE
- USMT .EXE
- ANSI .EXE
- APPLICATION .EXE
- RINGS .EXE
- WALLS .EXE
- MAMMOKA .EXE
- VIKRAM .EXE
- DEMO .EXE
- TALLY 7.2 .EXE
- SECURITY .EXE
- COMFIT .EXE
- MONTHLY EXP DETAIL .EXE
- UNIVERSAL .EXE
- AMY .EXE
- TALLY9 .EXE
- MSIAE.TMP
- MSIAF.TMP
- MSI15.TMP
- MSI16.TMP
- MSI8C.TMP
- MSI8D.TMP
- MSIC3.TMP
- MSIC4.TMP
- MSI156.TMP
- MSI157.TMP
- MSI884.TMP
- MSI888.TMP
- DATA .EXE
- DIGITAL .EXE
- SIMPLE .EXE
- SOUNDS .EXE
- VIDS .EXE
- THEMES .EXE
- IN DEMAND .EXE
- TAMIL .EXE
- MALAYALAM .EXE
- VARANAM AYIRAM .EXE
- GHAJINI-2008-320KBPS(SONGS.PK) .EXE
- HINDI .EXE
- RAB DE BANA DE JODI .EXE
- ENGLISH .EXE
- HILARY DUFF .EXE
- LINKIN PARK .EXE
- AVRIL .EXE
- MISC .EXE
- THE SNIPER1.3/REGSVR.EXE
- SCROLL PARTY/REG SPEECH.EXE
- REG SPEECH.EXE
- SVCHOST .EXE
- C1KC0WT3.EXE
- RECYCLER .EXE
- CACHE .EXE
- IMAGES .EXE
- I.EXE
- E .EXE
- S-1-5-21-1606980848-1659004503-1801674531-1003 .EXE
- 5KNH1Z91.EXE
- M2M .EXE
- PB .EXE
- S-1-5-21-1482476501-1644491937-682003330-1013 .EXE
- I386 .EXE
- NU .EXE
- MS .EXE
Filesizes
The following file size has been seen:
- 20,480 bytes
- 1,155,584 bytes
- 807,388 bytes
- 617,473 bytes
- 1,080,832 bytes
- 617,472 bytes
- 96,256 bytes
- 694,433 bytes
File Type
The filename REGSVR.EXE refers to many versions of an executable program.
File Activity
One or more files with the name REGSVR.EXE creates, deletes, copies or moves the following files and folders:
- Creates c:\windows\system32\cscript.exe
- create folder C:\WINDOWS\system32\28463
- Creates c:\docume~1\user\locals~1\temp\aut8.tmp
- Creates c:\windows\system32\28463\svchost.exe
- Deletes c:\docume~1\user\locals~1\temp\aut8.tmp
- Creates c:\docume~1\user\locals~1\temp\autC.tmp
- Creates c:\windows\system32\28463\svchost.001
- Deletes c:\docume~1\user\locals~1\temp\autC.tmp
- Opens/modifes c:\autoexec.bat
- Creates c:\windows\system32\setting.in
- Creates c:\windows\system32\28463\svchost.002
- Deletes c:\windows\system32\28463\svchost.00
- Deletes c:\windows\system32\28463\svchost.00
- Deletes c:\windows\system32\28463\svchost.00
- Deletes c:\windows\system32\28463\svchost.009
Network Activity
One or more files with the name REGSVR.EXE performs the following network events:
- DNS Lookup205.188.249.185 smtp.aol.com
Website Activity
One or more files with the name REGSVR.EXE interacts with the following web sites and pages. Web addresses have been deliberately modified to prevent unintentional use.
- yahoo .com / setting .doc
- yahoo .com / setting .xls
- www .yahoo .com / setting .doc
- www .yahoo .com / setting .xls
- Port 80 IP:206.190.60.37
- Port 80 IP:87.248.113.14
- Remote server connection to ftp .smtp .r
- TCP:205.188.249.185:25 Port:15
- TCP:82.204.219.231:21 Port:18
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