Win32.Nyxem.E@mm
( Email-Worm.Win32.Nyxem.e, W32/Nyxem-D, WORM_GREW.A, W32/MyWife.d@MM )| Spreading: | low | |
| Damage: | medium | |
| Size: | around 93 KB (upx packed), around 110 KB | |
| Discovered: | 2006 Jan 15 |
SYMPTOMS:
[Warning]
On the 3rd of every month, the virus will overwrite all files that have the extensions found below in the technical description.
- Presence of any of the next files in %WINDOWS% folder:
%WINDOWS%\Rundll16.exe
- Presence of any of the next files in %SYSTEM% folder:
%SYSTEM%\scanregw.exe
%SYSTEM%\Update.exe
%SYSTEM%\Winzip.exe
- Presence of the next file in Startup folder:
C:\Documents and Settings\All Users\Start Menu\Programs\Startup\WinZip Quick Pick.exe
- Presence of:
C:\WINZIP_TMP.exe
- Presence of the next registry keys or entries:
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
"ScanRegistry" = "%SYSTEM%\scanregw.exe /scan"
where %WINDOWS% points to Windows folder (or WinNT on Windows NT based systems)
%SYSTEM% points to "System" folder on Windows 9x systems and "System32" folder on WinNT systems.
TECHNICAL DESCRIPTION:
This threat comes by e-mail. It is written in Visual Basic, and is compiled in p-code.It spreads via e-mail as a mass mailer using it's own SMTP engine and also through network shares.
Has a dangerous payload, as on the 3rd of each month, 30 minutes after the system has been started,
searches for files with the following extension
.dmp .doc .mdb .mde .pdf .pps .ppt .psd .rar .xls .zip
on all available drives, and replaces their content with
"DATA Error [47 0F 94 93 F4 K5]"
The e-mail format is as follows:
Subject: (may be one of the following)
*Hot Movie*
A Great Video
eBook.pdf
Fw:
Fw: DSC-00465.jpg
Fw: Funny :)
Fw: Picturs
Fw: Real show
Fw: SeX.mpg
Fw: Sexy
Fwd: Crazy illegal Sex!
Fwd: image.jpg
Fwd: Photo
give me a kiss
Miss Lebanon 2006
My photos
Part 1 of 6 Video clipe
Photos
Re:
Re: Sex Video
School girl fantasies gone bad
the file
Word file
Body: (may be one of the following, or a composition i)
----- forwarded message -----
>> forwarded message
bye
F**kin Kama Sutra pics
forwarded message attached.
hello,
hi
Hot XXX Yahoo Groups
how are you?
i attached the details.
i just any one see my photos.
i send the details
i send the details.
i send the file.
It's Free :)
Note: forwarded message attached.
OK ?
Please see the file.
ready to be F**KED ;)
Thank you
The Best Videoclip Ever
VIDEOS! FREE! (US$ 0,00)
What?
You Must View This Videoclip!
Note: for instance, the (composed) body may be : hello, i send the details
Attachment
(may be an executable or a MIME-encoded executable)
007.pif
04.pif
677.pif
Arab sex DSC-00465.jpg
document.pif
DSC-00465.Pif
DSC-00465.pIf
eBook.PIF
image04.pif
New_Document_file.pif
photo.pif
School.pif
If the file is MIME-encoded, the attachment may be:
3.92315089702606E02.UUE
Attachments[001].B64
Attachments00.HQX
Attachments001.BHX
eBook.Uu
SeX.mim
Sex.mim
Video_part.mim
WinZip.BHX
Word_Document.hqx
Word_Document.uu
In MIME-encoded form, the attachment may also be composed from a predefined list of strings,
so filename may be:
392315089702606E-02
Clipe
Miss
Sweet_09
and extension may be any of:
.b64
.BHx
.HQX
.mim
.uu
.UUE
The the executable within MIME-encoded file may be:
392315089702606E-02,UUE .scR
Adults_9,zip .sCR
ATT01.zip .sCR
Atta[001],zip .SCR
Attachments,zip .SCR
Attachments[001],B64 .sCr
Clipe,zip .sCr
New Video,zip .sCr
Photos,zip .sCR
SeX,zip .scR
WinZip,zip .scR
WinZip.zip .sCR
Word XP.zip .sCR
Word.zip .sCR
Once the executable is run (attachment from e-mail or other way), the virus will do
the following:
1. Copies itself as one or more of the following files:
(also see symptoms above)
%WINDOWS%\Rundll16.exe
%SYSTEM%\scanregw.exe
%SYSTEM%\Update.exe
%SYSTEM%\Winzip.exe
2. Creates autorun registry entry:
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
"ScanRegistry" = "%SYSTEM%\scanregw.exe /scan"]
3. Modifies/sets the registry keys:
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
"WebView" = 0
"ShowSuperHidden" = 0
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\CabinetState]
"FullPath" = 1
4. Harvests e-mail addresses from files with extension:
.DBX .EML .HTM .IMH .MBX .MSF .MSG .NWS .OFT .TXT .VCF
also scans inside files whose filenames match the strings "CONTENT." or "TEMPORARY"
for e-mail addresses, but avoids e-mail addresses that contain:
@HOTMAIL
@HOTPOP
@YAHOOGROUPS
ANTI
AVG
CA.COM
CILLIN
EEYE
GROUPS.MSN
KASPER
MCAFEE
MICROSOFT
NOMAIL.YAHOO.COM
NORTON
PANDA
SCRIBE
SECUR
SPAM
SYMANTEC
TREND
TRUST
VIRUS
The virus will send itself to the harvested e-mail addresses in the format described earlier.
5. Network shares scan and propagation.
Enumerates available shares, and also checks "Personal" and "Recent" entries in
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
The virus may replace randomly one of the files from the found folders, with a copy of itself, barring .exe extension.
Attempts to copy itself to network shares as:
New WinZip File.exe
Zipped Files.exe
movies.exe
WINZIP_TMP.exe
Also as
C$\Documents and Settings\All Users\Start Menu\Programs\Startup\WinZip Quick Pick.exe
and deletes
C$\Documents and Settings\All Users\Start Menu\Programs\Startup\WinZip Quick Pick.lnk
Also, attempts to delete files from folders:
\C$\Program Files\CA\eTrust EZ Armor\eTrust EZ Antivirus
\C$\Program Files\Common Files\symantec shared
\C$\Program Files\Kaspersky Lab\Kaspersky Anti-Virus Personal
\C$\Program Files\Kaspersky Lab\Kaspersky Anti-Virus Personal Pro
\C$\Program Files\McAfee.com\Agent
\C$\Program Files\McAfee.com\shared
\C$\Program Files\McAfee.com\VSO
\C$\Program Files\NavNT
\C$\Program Files\Norton AntiVirus
\C$\Program Files\Panda Software\Panda Antivirus 6.0
\C$\Program Files\Panda Software\Panda Antivirus Platinum
\C$\Program Files\Symantec\LiveUpdate
\C$\Program Files\Trend Micro\Internet Security
\C$\Program Files\Trend Micro\PC-cillin 2002
\C$\Program Files\Trend Micro\PC-cillin 2003
6. Attempts to delete files from "Program Files" inside the following folders:
\DAP\*.dll
\BearShare\*.dll
\Symantec\LiveUpdate\*.*
\Symantec\Common Files\Symantec Shared\*.*
\Norton AntiVirus\*.exe
\Alwil Software\Avast4\*.exe
\McAfee.com\VSO\*.exe
\McAfee.com\Agent\*.*
\McAfee.com\shared\*.*
\Trend Micro\PC-cillin 2002\*.exe
\Trend Micro\PC-cillin 2003\*.exe
\Trend Micro\Internet Security\*.exe
\NavNT\*.exe
\Morpheus\*.dll
\Kaspersky Lab\Kaspersky Anti-Virus Personal\*.ppl
\Kaspersky Lab\Kaspersky Anti-Virus Personal\*.exe
\Grisoft\AVG7\*.dll
\TREND MICRO\OfficeScan\*.dll
\Trend Micro\OfficeScan Client\*.exe
\LimeWire\LimeWire 4.2.6\LimeWire.jar
and also
\HyperTechnologies\Deep Freeze\*.exe
the virus also looks for registry keys:
Software\INTEL\LANDesk\VirusProtect6\CurrentVersion
SOFTWARE\Symantec\InstalledApps
SOFTWARE\KasperskyLab\InstalledProducts\Kaspersky Anti-Virus Personal
SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\Iface.exe
SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Panda Antivirus 6.0 Platinum
in order to delete various files.
7. Terminates applications whose caption contain any of the strings:
SYMANTEC
SCAN
KASPERSKY
VIRUS
MCAFEE
TREND MICRO
NORTON
REMOVAL
8. Deletes registry entries from:
[Software\Microsoft\Windows\CurrentVersion\Run]
[Software\Microsoft\Windows\CurrentVersion\RunServices]
that contain the following strings:
APVXDWIN
avast!
AVG_CC
AVG7_CC
AVG7_EMC
AVG7_Run
Avgserv9.exe
AVGW
BearShare
ccApp
CleanUp
defwatch
DownloadAccelerator
kaspersky
KAVPersonal50
McAfeeVirusScanService
MCAgentExe
McRegWiz
MCUpdateExe
McVsRte
MPFExe
MSKAGENTEXE
MSKDetectorExe
NAV Agent
NPROTECT
OfficeScanNT Monitor
PCCClient.exe
pccguide.exe
PCCIOMON.exe
PCCIOMON.exe
PCClient.exe
PccPfw
Pop3trap.exe
rtvscn95
ScanInicio
ScriptBlocking
SSDPSRV
TM Outbreak Agent
tmproxy
Vet Alert
VetTray
VirusScan Online
vptray
VSOCheckTask
9. Notifies the author for infection, by connecting to:
"http://webstats.web.rcn.net/cgi-bin/Count.cgi?df=?????"
10. May display a tray icon in systray, saying "Update Please wait", and also attempt to
download an update of itself.
Additional notes:
- the virus also carries an upx packed version of MSWINSCK.OCX, which will register using
"regsvr32 /s MSWINSCK.OCX" command.
- the virus may block acces to "http://www.microsoft.com"
Removal instructions:
- use the free removal tool from BitDefender- automatic removal: let BitDefender delete/disinfect files found infected.
ANALYZED BY:
Patrik Vicol, virus researcherBitdefender e-Guides Series
The Bitdefender e-Guides series is a learning initiative aiming to provide the Bitdefender reader and user community with valuable information about e-threats and the security issues of the IT&C realm, while also offering practical advice and feasible solutions to their on-line defense needs. The Bitdefender security analysts share their knowledge in malware prevention, identification and annihilation, with an emphasis on on-line privacy and different technologies, countermeasures and cybercrime prevention methods.
Covering topics that range from kids and family's on-line protection, safe social networking and preventing data safety breaches to securing enterprise environments, the e-Guides series is intended for a broad audience of small organizations and individual users concerned about the safety and integrity of their networks and systems. The e-Guides also address issues pertaining to the daily activity of IT&C Systems Security Managers, System and Network Administrators, Security Technology Developers, Analysts, and Researchers.
Safe Blogging Guide
Tips and tricks on how to keep your blog and your identity safe

Blogging is one of the most popular forms of written expression on the web, with more than 150 million indexed blogs worldwide. While regular readers are looking for pieces of information and articles, cyber-crooks take a different interest in them. Finding private information and getting cheap storage space for their malware campaigns are only two of the multitude of users they may subject your blog to.
This material covers the basic guidelines for safe blogging and is especially focused on individual blogs that are either self-hosted or provided as a service by major blog providers.
Securing Wireless Networks Guide
Tips and tricks on how to shield your home network from intruders

This document is intended for computer users who have deployed or plan to deploy a home wireless network. At a time when wireless communication has become a significant part of our lives, cyber-criminals try to exploit every security breach in the wireless configuration in order to intercept traffic or use the internet connection for illegal purposes.
The following guide will teach you the best practices when using unsecured wireless networks, as well as how to properly configure your home router or access point to prevent others from abusing your network.
Protecting Children On-line Guide
How to secure and defend the digital experience of your kids

This document is intended for family, parents and teachers and its purpose is to help secure the digital activities of kids and teens. In an age when the mass production and accessibility of computers have turned these devices into regular family or household commodities, children get familiar with PCs and Internet from a very fresh age. Despite its obvious communication-related benefits, the WWW can also be a hazardous place for kids, with e-threats directly targeting their age group and their home or school computers.
This e-Guide covers the main risks and dangers for kids on-line, such as cyber-bulling, exposure to inappropriate content, on-line addiction and other harmful online actions, while also focusing on topics such as malware, phishing, ID theft and spam, to which teenagers, just as any other Internet users, are exposed nowadays. A Safety Tips section helps parents and teachers better understand and deal with these issues in relation to the kids.
Silver Surfers On-line Safety Guide
How to protect valuable ideas and assets from cyber-hacking

This document is intended for families and senior citizens and its purpose is to help them browse the web safely and enjoy their on-line activities.
At a first glance, it would appear that senior citizens are exposed to cybercrime just as much as any other inexperienced Internet user, irrespective of their age. However, as this e-Guide shows through several case studies, there are several risks and dangers targeting directly silver surfers, such as pension delivery and fallacious tax paying methods or income-related scams. Examples, tips and advice complement the case studies and provide readers with useful guidelines in their daily on-line routine.
Preventing Data Breaches Guide
How to protect valuable ideas and assets from cyber-hacking

The e-guide was designed to cover the various potential sore points of business data safety, from the matter of the network's physical integrity to the complicated mechanisms of business targeted cybercrime (e.g. banker Trojans, phishing). This material is also intended to match, though not in as much detail as a full-fledged technical description, the features of the various consumer and business oriented Bitdefender solutions to the situations in which they might come in handy to IT administrators.
Consulting this document would be useful in the process of deciding what's best for small to medium-sized networks security and a solid basis for further comparative research on this subject.
White Papers
- Facebook Whitepaper
- Bitdefender Antivirus Technology
- B-HAVE ,The Road to Success
- The medium or the message? Dealing with image spam, December 2006, Virus Bulletin
- Fighting Image Spam
- Bitdefender NeuNet Antispam Technology
- Proactive security I body armor against business attacks
- Whitepaper-Emerging Threats to Business Security
- Securing the Uncertain Bitdefender's B-HAVE Proactive Technology for Defense against Versatile_Threats
- Securing E-Mail-The First Strategic Defense Line
- Virus Naming. The "Who's Who?" Dilemma
- Facebook – Another breach in the wall
- Bitdefender Active Virus Control: Proactive Protection Against New and Emerging Threats
Bitdefender E-Threats Landscape Reports
The purpose of this report is to provide a comprehensive investigation of the threats’ landscape. Bitdefender’s security experts thoroughly analyze and examine the menaces of the each semester, focusing on software vulnerabilities and exploits, different types of malware, as well as countermeasures, cyber crime prevention and law enforcement. The E-Threats Landscape Report concentrates mainly on the latest trends, but it also contains facts and data and concerning the previously investigated periods, as well as several predictions related to the upcoming semesters. This document is primarily intended for IT&C System’s Security Managers, System and Network Administrators, Security Technology Developers, Analysts, and Researchers, but it also addresses issues pertaining to a broader audience, like small organizations or individual users concerned about the safety and integrity of their networks and systems.
H2 2011 E-Threat Landscape Report - Overview
Twenty years ago, a revolutionary means of electronic communication was born. It would become so popular with all ages and professions that it is still the most used data communication mechanism even today: introducing the SMS – the short message service.
Today, mobile phones are more than bulky gadgets that can move voice and messages from one point to another: they are must-have gear in a World 2.0 – so powerful and so complex, running their own operating systems and, consequently, facing their share of cyber-trouble. While the first six months of 2011 were marked by software vulnerabilities and high-profile data breaches, the second half cast the spotlight on not only a new family of malware, but also uncovered a user espionage scandal that apparently involved an array of mobile phone carriers and the controversial software vendor CarrierIQ.
The malware landscape was dominated by Trojan.Autorun.Inf and Win32.Worm.Downadup, two malicious contenders that have roots in the Windows XP era, but managed to keep their places even though operating system upgrades or applying patches would have solved security issues exploited by these pieces of malware. The top contenders for H2 2011 are Trojan.AutorunInf, Win32.Worm.Downadup, and Exploit.CplLnk.
Data breaches attributed to the Anonymous gang and its satellite hacking groups continued throughout the second half of 2011. Among the most important targets were Mitsubishi Heavy Industries, Adidas, RIM, Tiroler Gebietskrankenkasse, Nexon and even the United Nations. Corporate trust also came under close scrutiny, as the DigiNotar incident in H1 2011 exposed unwary users to a massive phishing attack that used stolen digital certificates generated for high-profile institutions and government agencies such as Google, Tor, CIA and Israel’s Secret Service, the Mossad.
Social networks have also played a key role in disseminating malware and spreading fake news about the deaths of high-profile personalities such as Muammar Gaddafi or Steve Jobs. Of particular importance were the malicious campaigns built around the alleged movie of Gaddafi’s execution and the commemorative giveaway in honor of the late Steve Jobs.
Download now the full H2 2011 E-Threat Landscape Report (pdf)
Download now the executive summary H2 2011 E-Threat Landscape Report - Executive Summary (pdf)
Archive
2011
Download now H1 2011 E-Threats Landscape Report - Executive Summary (pdf)
2010
Download now H2 2010 E-Threats Landscape Report - Executive Summary (pdf)
Download now H2 2010 E-Threats Landscape Report (pdf)
Download now H1 2010 E-Threats Landscape Report - Executive Summary (pdf)
Download now H1 2010 E-Threats Landscape Report (pdf)
2009
Download now H1 2009 Malware and Spam Review Executive Summary (pdf)
Download now H1 2009 E-Threats Landscape Report (pdf)
Download now H2 2009 Malware and Spam Review (pdf)
Download now H2 2009 E-Threats Landscape Report - Executive Summary (pdf)
2008
Download now H1 2008 E-Threats Landscape Report (pdf)
Download now H2 2008 E-Threats Landscape Report (pdf)
Who to ask? Below you have a list of all of our media representatives who are ready to answer any question you might have.
Global PR Manager
