Prevx Research Division
AUTORUN.INF
Cloaked MalwareFree PC Cleanup from Webroot
Use Webroot SecureAnywhere to remove AUTORUN.INF.
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Associated Malware Groups
The filename is associated with the malware groups:
- Cloaked Malware
- Worm
File Behavior
AUTORUN.INF has been seen to perform the following behavior:
- The Process is packed and/or encrypted using a software packing process
- Disables the Notification Balloon for the Windows Security Center
- Disables Access to the Windows Registry Editior
- Disables Access to the Task Manager built into Windows
- Modifies Windows Security Policies to restrict/expand User Privileges on the machine
- Automatically changes your firewall settings to allow itself or other programs to communicate over the internet
- Adds products to the system registry
- Writes to another Process's Virtual Memory (Process Hijacking)
- Executes a Process
- Hooks the WININET.DLL function allowing it to read or copy Http and Https web page content and session information
- Injects code into the operating system function WINLOGON.EXE
- Changes the Windows Security Center to stop Antivirus status alerts from being displayed
- Changes the Windows Security Center to stop Firewall status alerts from being displayed
- Changes the Windows Security Center to stop Firewall override alerts from being displayed
- Changes the Windows Security Center to stop warnings from being displayed if automatic Windows Updates are not enabled
- Disables safe mode on your PC
- Injects code into other processes
- Found on infected systems and resists interrogation by security products
- This process creates other processes on disk
- This Process Deletes Other Processes From Disk
- Copies files
- Creates a new Background Service on the machine
- Adds a Registry Key (RUN) to auto start Programs on system start up
- Loads and Executes a System Driver File
- Checks for the use of debuggers
- Registers a Dynamic Link Library File
- Injects code into other processes
- Drops known malicious software during execution
- Modifies fixed, removable or USB drives using autorun to execute or spread infection
AUTORUN.INF has been the subject of the following behavior:
- Added as a Registry auto start to load Program on Boot up
- Created as a process on disk
- Executed as a Process
- Has code inserted into its Virtual Memory space by other programs
- Copied to multiple locations on the system
- Deleted as a process from disk
- This program is often downloaded from the web
- Executed from Temporary Folders
- Registered as a Dynamic Link Library File
- Changes to the file command map within the registry
Country Of Origin
The filename AUTORUN.INF was first seen on Jan 13 2009 in the following geographical regions of the Webroot community:
- Europe on Jan 13 2009
- Poland on Jan 13 2009
- on Jul 10 2009
- Kenya on Jul 19 2009
- Romania on May 31 2010
- The United Kingdom on May 31 2010
- Turkey on May 24 2012
File Name Aliases
AUTORUN.INF can also use the following file names:
- GBM6N.EXE
- MJAFM.EXE
- O8TF6L.EXE
- QCOD.EXE
- DPLTWR~1.EXE
- LHH3V.EXE
- DPLYIM~1.EXE
- DPLURM~1.EXE
- OLHRWEF.EXE
- GFQGQ.CMD
- SFKN.EXE
- DOGYX90.EXE
- HELP.EXE
- NKBD1V.EXE
- AIEH8R.BAT
- OOBBYJU.EXE
- DPLRNR~1.EXE
- NKV.BAT
- FRG89PI.BAT
- EWQIJ.BAT
- ETMT1.BAT
- I0YVA6.EXE
- T8S2X.EXE
- YUGU9UPS.BAT
- O9BXU.EXE
- CJ3K.EXE
- PKKWNG.EXE
- YHH.BAT
- M.EXE
- P.EXE
- PH.EXE
- AM.EXE
- R8.EXE
- IQ.BAT
- W3.EXE
- HX.EXE
- MT2.EXE
- R6D0.BAT
- 1XNIPH.BAT
Filesizes
The following file size has been seen:
- 190,464 bytes
- 117,488 bytes
- 110,929 bytes
- 112,053 bytes
- 107,217 bytes
- 114,997 bytes
- 514,075 bytes
File Type
The filename AUTORUN.INF refers to many versions of an executable program.
File Activity
One or more files with the name AUTORUN.INF creates, deletes, copies or moves the following files and folders:
- Deletes c:\windows\system32\olhrwef.exe
- Deletes c:\windows\system32\nmdfgds0.dll
- Creates c:\windows\system32\nmdfgds0.dll
- Creates c:\windows\system32\c.exe
- Deletes c:\windows\system32\c.exe
- Deletes c:\oobbyju.ex
- Copies filec:\windows\system32\olhrwef.exe to c:\oobbyju.ex
- Deletes c:\autorun.in
- Creates c:\autorun.in
- Deletes d:\oobbyju.ex
- Copies filec:\windows\system32\olhrwef.exe to d:\oobbyju.ex
- Deletes d:\autorun.in
- Creates d:\autorun.in
- Deletes c:\docume~1\user\locals~1\temp\am1.rar
- Creates c:\docume~1\user\locals~1\temp\am1.rar
- Creates c:\docume~1\user\locals~1\temp\am.exe
- Deletes c:\docume~1\user\locals~1\temp\am.exe
- Deletes c:\windows\temp\scsA1.tmp
- Deletes c:\windows\temp\scsA6.tmp
- Copies filec:\docume~1\user\locals~1\temp\am.exe to c:\windows\system32\olhrwef.exe
- Deletes c:\windows\system32\nmdfgds1.dll
- Creates c:\windows\system32\nmdfgds1.dll
Website Activity
One or more files with the name AUTORUN.INF interacts with the following web sites and pages. Web addresses have been deliberately modified to prevent unintentional use.
- TCP:127.0.0.1:1092 Port:17
- Port 80 IP:218.59.144.131
- sq98c .com / 1m / c .rar
- TCP:127.0.0.1:1099 Port:17
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