Prevx Research Division
HYRTEAS0.DLL
Cloaked MalwareFree PC Cleanup from Webroot
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Associated Malware Groups
The filename is associated with the malware groups:
- Cloaked Malware
- Worm
File Behavior
HYRTEAS0.DLL has been seen to perform the following behavior:
- The Process is packed and/or encrypted using a software packing process
- This process creates other processes on disk
- This Process Deletes Other Processes From Disk
- Copies files
- Executes a Process
- This Process is a file infector which modifies program files to include a copy of the infection
- Found on infected systems and resists interrogation by security products
HYRTEAS0.DLL has been the subject of the following behavior:
- Created as a process on disk
- Deleted as a process from disk
- Registered as a Dynamic Link Library File
- Executed as a Process
- The process is hooked into all running processes which could allow it to take control of the system or record keyboard input, mouse activity and screen contents
Country Of Origin
The filename HYRTEAS0.DLL was first seen on Jan 13 2009 in the following geographical regions of the Webroot community:
- Canada on Jan 13 2009
- Spain on Jan 13 2009
- Italy on Feb 3 2009
- Poland on Feb 3 2009
- Philippines on Feb 11 2009
- The United States on Feb 11 2009
- The United Arab Emirates on Mar 12 2009
- Saudi Arabia on Dec 22 2010
File Name Aliases
HYRTEAS0.DLL can also use the following file name:
- HYRTEAS1.DLL
- HYRTEAS2.DLL
- HYRTEAS3.DLL
- 51809895.EX_
- 59314388.SVD
Filesizes
The following file size has been seen:
- 110,592 bytes
- 109,056 bytes
- 99,328 bytes
File Type
The filename HYRTEAS0.DLL is used by multiple object types including Dynamic Link LIbraries,objects.
File Activity
One or more files with the name HYRTEAS0.DLL creates, deletes, copies or moves the following files and folders:
- Deletes c:\docume~1\user\locals~1\temp\ll.rar
- Opens/modifes c:\autoexec.bat
- Moves c:\docume~1\user\locals~1\temp\ll.exe to c:\docume~1\user\locals~1\temp\xxxB.tmp
- Creates c:\windows\hg.exe
- Creates c:\windows\system32\cscript.exe
- Creates c:\windows\system32\drivers\klif.sys
- Deletes c:\windows\system32\drivers\klif.sys
- Deletes c:\windows\system32\oukdfgr.exe
- Copies filec:\windows\hg.exe to c:\windows\system32\oukdfgr.exe
- Deletes c:\windows\system32\bgdferw0.dll
- Creates c:\windows\system32\bgdferw0.dll
- Deletes c:\windows\system32\hyrteas0.dll
- Creates c:\windows\system32\hyrteas0.dll
- Deletes c:\windows\hg.ex
- Deletes c:\w.ex
- Copies filec:\windows\system32\oukdfgr.exe to c:\w.ex
- Deletes c:\autorun.in
- Creates c:\autorun.in
- Deletes d:\w.ex
- Copies filec:\windows\system32\oukdfgr.exe to d:\w.ex
- Deletes d:\autorun.in
- Creates d:\autorun.in
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