Prevx Research Division
COMMON.DLL
Fraudulent Security ProgramFree PC Cleanup from Webroot
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Associated Malware Groups
The unsafe files using this name are associated with the malware groups:
- Fraudulent Security Program
- Worm
File Behavior
COMMON.DLL has been seen to perform the following behavior:
- Creates system tray popups, messages, errors and security warnings
- Adds a Registry Key (DELAY) to auto start Programs on system start up
- Enables an In Process Object/Server - Common with DLL Injections
- This process creates other processes on disk
- Registers a Dynamic Link Libray (DLL) File
- The process hooks code into all running processes which could allow it to take control of the system or record keyboard input, mouse activity and screen contents
- This Process Deletes Other Processes From Disk
- 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
- The Process is packed and/or encrypted using a software packing process
COMMON.DLL has been the subject of the following behavior:
- Added as a Registry auto start to load Program on Boot up
- Enabled as an In Process Object/Server - Common with DLL Injections
- Created as a process on disk
- Registered as a Dynamic Link Library File
- Registered as a Dynamic Link Libray (DLL) File
- Executed as a Process
- Added as a Registry Key (DELAY) to auto start Programs on system start up
- 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
- Deleted as a process from disk
Country Of Origin
The filename COMMON.DLL was first seen on May 15 2007 in the following geographical regions of the Webroot community:
- The United States on May 15 2007
- Italy on May 15 2007
- Europe on May 30 2007
- Canada on May 30 2007
- on Jun 6 2007
- Netherlands on Sep 24 2007
- Spain on Aug 1 2008
- Australia on Aug 14 2009
- Brazil on Oct 30 2010
- Germany on May 25 2012
Filesizes
The following file size has been seen:
- 479,744 bytes
- 578,888 bytes
- 681,472 bytes
- 106,496 bytes
- 73,728 bytes
- 331,776 bytes
- 7,389,184 bytes
File Type
The filename COMMON.DLL refers to many versions of a dynamic link library.
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