Is there information on msiebbar.dll "Win32:Agent-AAYV" anywhere?

Avast informed me that it found the “Win32:Agent-AAYV” trojan on my computer (specifically a msiebbar.dll file in my c:\windows\system32 folder).

I can’t find any information on such a virus/trojan or on such a file (msiebbar.dll) on the virus-information sites of Symantec, McAfee, CA, Eset, Avast, and several others.

I can find sparse reference to it in Google searches on various forums, with information just from some users here and there, but I can’t find any reputable virus-information site that has any information on it about this particular one.

Is msiebbar.dll really a trojan? I’m pretty careful with my machine and my security, so if it is a trojan, I’d really like to find out more about it (such as what is does in detail, and so forth).

Is msiebbar.dll really a trojan?
Yes.

You probably got it because you Sun Java is down level.

Run Secunia: Online Software Inspector to check the Sun Java levels for vulnerability.
http://secunia.com/software_inspector

If a vulnerable level is found then go to Add/Remove Programs and un-install all old Sun Java levels then install the latest Version 6 Update 7

http://www.java.com/en/download/manual.jsp

Hi brooke,

Welcome to the avast forum, we give you some info to get rid of this infector, don’t panic all will be well in the end.

Characteristics -

The detection for Generic Downloader are for several specific trojan variants, so this description is meant as a general guide. This detection is for trojans which are intended to retrieve and execute files from a remote server. This file will then be automatically executed on the infected machine. The nature of the remote file may vary. As the presence of these trojans and remote files are discovered, sites hosting these files are frequently taken down, so the downloading may cease to function as expected. This may result in empty, 0 byte files or HTML error messages being downloaded instead, or the remote file simply not being downloaded at all.

As new trojans are frequently added to this detection, users are recommended to use the latest engine/DAT combination for optimal detection. Variants are likely to be packed with a PE packer, so enabling the scanning of compressed files will also provide optimal detection.

Exact details (filenames, Registry keys, file size) will vary between variants.

Typically the downloader will install itself and/or the remote file into the Windows or System directory, and hook system startup via a Registry key such as:

HKEY_CURRENT_USER\Software\Microsoft\Windows
CurrentVersion\Run HKEY_CURRENT_USER\Software\Microsoft\Windows
CurrentVersion\RunServices HKEY_LOCAL_MACHINE\Software\Microsoft\Windows
CurrentVersion\Run HKEY_LOCAL_MACHINE\Software\Microsoft\Windows
CurrentVersion\RunServices
Symptoms
Symptoms -
Desktop firewall program alerting that a foreign application is attempting to access the Internet.

Method of Infection
Method of Infection -
This purpose of this trojan is simply to download a file from the Internet and execute it. It does not self-replicate. Downloader trojans are frequently sent in spammed emails designed to entice the recipient into running the file. Other likely distribution channels for this trojan include via IRC, via peer-to-peer file-sharing networks, as an attachment in newsgroup postings, etc. Trojans may also be received as a result of poor security practices (weak username/password combination on open shares, lack of/or misconfigured firewall protection), or unpatched and vulnerable systems.

O18 Extra protocols and protocol hijackers
Field Value
Header Filter hijack
CLSID ----
Name text/html
Path/File %SYSDIR%\msiebbar.dll
Status X
Description Trojan-Downloader.Win32.Agent.wis
Download the following free removal programs:
SmitFraudFix:
http://downloads.securitycadets.com/Smit
How to use SmitFraud:
http://cotojo.wordpress.com/2007/08/24/

RogueRemover:
http://www.download.com/RogueRemover/300
Download, install, update, scan and follow on screen prompts.

Malwarebytes Anti-Malware:
http://www.download.com/Malwarebytes-Ant
Download, install, update and select Quick Scan

Spyware Doctor Free Basic Edition:
http://pack.google.com/intl/en/pack_inst
Its free with Google pack, untick all boxes except Spyware Doctor. Download install, update and run.

Scan and see what they find, after all, these are al free programs and free of malware - guaranteed.

EDIT:
The unsafe files using this name are associated with the malware group TROJAN.AGENT.GEN.
These files have no vendor, product or version information specified in the file header.
MSIEBBAR.DLL has been seen to perform the following behavior(s):
The Process is packed and/or encrypted using a software packing process

MSIEBBAR.DLL has been the subject of the following behavior(s):
Created as a process on disk
Registered as a Dynamic Link Library File
MSIEBBAR.DLL can also use the following file name:
82183736.SVD

It is NOT a System .dll file

SmitFraudFix and Malwarebytes are the best ones to use for removal.
Spyware Doctor will give you realtime protection against such malware, and RogueRemover works in tandem with Malwarebytes, but is usually updated before definitions are added to Malwarebytes program.

AV scanners may find it, but will not always completely remove it,

Follow the instructions of YoKenny as well to prevent re-infection, have a good day,

polonus

Thanks for the information, folks.