Prevx Research Division
RLLS.DLL
Cloaked MalwareFree PC Cleanup from Webroot
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Associated Malware Groups
The unsafe files using this name are associated with the malware groups:
- Cloaked Malware
- Malicious Software
File Behavior
RLLS.DLL has been seen to perform the following behavior:
- The Process is polymorphic and can change its structure
- Adds a Registry Key (RUN) to auto start Programs on system start up
- Adds a Registry Key (RUNONCE) to auto start Programs on system start up
- Adds a Winlogon Notification DLL to automatically load on system start up
- 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
RLLS.DLL has been the subject of the following behavior:
- Deleted as a process from disk
- Created as a process on disk
- Registered as a Dynamic Link Library File
- 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
- Copied to multiple locations on the system
- Added as a Registry Key (RUNONCE) to auto start Programs on system start up
- Executed as a Process
Country Of Origin
The filename RLLS.DLL was first seen on May 8 2007 in the following geographical regions of the Webroot community:
- The United States on May 8 2007
- Europe on May 8 2007
- Sweden on Jan 15 2008
- The United Kingdom on Feb 4 2010
- Canada on Feb 4 2010
- Turkey on May 12 2012
File Name Aliases
RLLS.DLL can also use the following file names:
- RLLS.DL_
- OPLS.DLL
- PMLS.DLL
- PRLS.DLL
- SRLS.DLL
- RLLS(3).DLL
- SHLS.DLL.VZR
- SHLS.DLL
- RLLS(2).DLL
- ETLS.DLL
- PMLS.DL_
- PMLS(2).DLL
- RLLS.DLL.REN
- RLLS(1).DLL
- RLLS(2)(1).DLL
- OSMIM.DLL
- MFEX-1.DAT
- TEMP.FR0EB9
- *0ABAA02A-1328-11DF-B1F6-C30BAFA05FFA*.DAT
- RLLS.DLL_TOBEDELETED
- RLLS.DLL_TOBEDELETED_OLD
Filesizes
The following file size has been seen:
- 566,288 bytes
- 315,392 bytes
- 385,024 bytes
- 307,200 bytes
- 376,832 bytes
- 385,664 bytes
- 344,064 bytes
File Type
The filename RLLS.DLL is used by multiple object types including executable programs,Dynamic Link LIbraries.
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