"SYSTEM DEFENDER.DLL"

Malicious Software

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File Behavior

SYSTEM DEFENDER.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

SYSTEM DEFENDER.DLL has been the subject of the following behavior:

Added as a Registry auto start to load Program on Boot up

Country Of Origin

The filename SYSTEM DEFENDER.DLL was first seen on Mar 7 2011 in the following geographical regions of the Webroot community:

Canada on Mar 7 2011
The United States on Mar 9 2011
South Africa on Mar 16 2011
Australia on Mar 17 2011

File Name Aliases

SYSTEM DEFENDER.DLL can also use the following file names:

WRK3.TMP
WRK2.TMP
WRK2AE.TMP
NMDJZQYN.DLL
VYPDLR3N.DLL
INS2C4.TMP
WRK6E62.TMP
WRK4.TMP
TGRHMDWM.DLL
B8FCTXGK.DLL
JR2WK83Q.DLL
PTRRBH7Y.DLL
KPKG8CWC.DLL
RDF6TYCH.DLL
WRK9F8.TMP
INSF.TMP
WRK1.TMP
INSE.TMP
WRKB.TMP
35.AVI
37.AVI
39.AVI
65263944
74872359
6YDLRXPR.DLL

Filesizes

The following file size has been seen:

2,445,312 bytes
2,404,352 bytes
3,063,808 bytes
2,965,504 bytes
2,125,824 bytes
2,957,312 bytes
2,707,456 bytes
2,740,224 bytes

File Type

The filename SYSTEM DEFENDER.DLL refers to many versions of a dynamic link library.

Help the Webroot Community to fight cyber crime

We are always looking for ways to improve the quality and speed of research to help us protect you from malicious software and cyber crime.

The filename referred to in this report is often associated with PC infections. If you have a program of this name on your PC and would like to help our research please tell us what you know in the form below:

I have this file on my PC and believe it is an infection
I have this file on my PC and think it has made my PC slower
My firewall asked if I wanted to let this file have access to the Internet
My PC will not work since I noticed this file on it
My antivirus detected this file but won't remove it
I know what this file is and believe it is a Safe program
I am the author of this file and would like to discuss how to have it reclassified as safe

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