Prevx Research Division
CORELIB.DLL
RootkitFree PC Cleanup from Webroot
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Associated Malware Groups
The unsafe files using this name are associated with the malware groups:
- Rootkit
- System Back Door
File Behavior
CORELIB.DLL has been seen to perform the following behavior:
- Uses rootkit techniques to conceal its presence, interrogation or removal
- Found on infected systems and resists interrogation by security products
- Uses low level functions to hide itself from the user and from system/security processes
- Adds a Registry Key (RUN) to auto start Programs on system start up
- Changes the Internet Explorer Search Page
- Adds a Registry Key (RUNONCE) to auto start Programs on system start up
- Changes to the file command map within the registry
- Ability to execute files automatically on your PC
- Adds a Winlogon Notification DLL to automatically load on system start up
- Adds a Registry Key (EXPLORER) to auto start Programs on system start Boot up
- Adds a Registry Key (DELAY) to auto start Programs on system start up
- Modifies System Runtime Policies to limit system usability
CORELIB.DLL has been the subject of the following behavior:
- Registered as a Dynamic Link Library File
- Created as a process on disk
- Deleted as a process from disk
- Created as a new Background Service on the machine
Country Of Origin
The filename CORELIB.DLL was first seen on May 30 2007 in the following geographical regions of the Webroot community:
- Europe on May 30 2007
- The United States on May 30 2007
- Italy on Jan 21 2008
- Vietnam on Mar 21 2009
- Spain on Mar 21 2009
- Japan on Jan 14 2010
- South Africa on Feb 8 2012
File Name Aliases
CORELIB.DLL can also use the following file names:
- CONTEXTMENU.DLL
- NER60B318C8.DLL
- SYSLIB0.SYS
- SYSLIB0.SYS.DEL
- SYSLIB0.SYS.TRTMP
- 18715729.DLL
Filesizes
The following file size has been seen:
- 61,440 bytes
- 32,768 bytes
- 147,456 bytes
- 53,248 bytes
- 3,661,824 bytes
- 95,512 bytes
File Type
The filename CORELIB.DLL is used by multiple object types including Dynamic Link LIbraries,objects.
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