W32/Bagle.N

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W32/Bagle.N Worm

Information about the W32/Bagle.N Worm:

W32/Bagle.N is a mass mailing worm. The worm will infect Windows systems. This worm spreads through email and shared drives on the network. This worm is polymorphic in nature and infects Windows PE files.

Infected mail carries a spoofed 'From' address, picked up randomly from the infected system or from any other shared network drive connected to the infected system.

The subject of the infected email will be any one of the following;

Warning about your e-mail account.
Site changes
Request response
Re: Yahoo!
Re: Thanks :)
Re: Thank you!
RE: Text message
RE: Protected message
Re: Document
Re: Msg reply
Re: Incoming Message
Re: Incoming Fax
Re: Hi
Re: Hello
Protected message
Notify from e-mail technical support.
Notify about your e-mail account utilization.
Notify about using the e-mail account.
Incoming message
Important notify about your e-mail account.
Important notify
Hidden message
Account notify
Forum notify
Fax Message Received
Encrypted document
Email report
Email account utilization warning.
E-mail warning
E-mail technical support warning.
E-mail technical support message.
E-mail account security warning.
E-mail account disabling warning.

The body of the infected email will be random which includes password information.

It carries any one of the following infected attachment;

text_document
TextDocument
Text Readme
pub_document
MoreInfo
Message
Information
Info
Gift
first_part
Encrypted
Document
details
Attach

The extension of the attachment may be any one of the following;

.zip, .rar, .pif, .exe.

Upon execution of the attachment, the worm copies itself as WINUPD.EXE in the Windows System folder. It drops WINUPD.EXEOPEN and WINUPD.EXEOPENOPEN which are copies of the worm. It creates a file WINUPD.EXEOPENOPENOPEN, which contains password information. It also checks for a word 'shar' in the available shared folders in both local and network, if found the worm copies itself to these folders using the following filenames;

XXX hardcore images.exe
Windows Sourcecode update.doc.exe
Windown Longhorn Beta Leak.exe
WinAmp 6 New!.exe
WinAmp 5 Pro Keygen Crack Update.exe
Serials.txt.exe
Porno, sex, oral, anal cool, awesome!!.exe
Porno Screensaver.scr
Porno pics arhive, xxx.exe
Opera 8 New!.exe
Microsoft Windows XP, WinXP Crack, working Keygen.exe
Microsoft Office XP working Crack, Keygen.exe
Microsoft Office 2003 Crack, Working!.exe
Matrix 3 Revolution English Subtitles.exe
Ahead Nero 7.exe
Adobe Photoshop 9 full.exe
ACDSee 9.exe

It alters the windows registry at the following location to load itself during next startup;

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

It also attempts to terminate processes related to Protector Plus antivirus and other security related softwares.

To propagate itself, the worm scans the infected machine for the files having the following extensions and collects all the available email addresses;

.xml, .xls, .wsh, .wab, .uin, .txt, .tbb, .stm, .shtm, .sht, .pl, .php, .oft, .ods, .mbx, .jsp, .htm, .eml, .dhtm, .dbx, .nch, .msg, .mmf, .mht, .mdx, .cgi, .cfg, .asp, .adb.

The worm uses its own SMTP engine to mail itself to these email addresses.

This worm first appeared on 13th March 2004.

Other names of W32/Bagle.N Worm:

This Worm is also known as W32/Bagle.n@MM, Bagle.N, W32/Bagle.N@mm .

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Proland Software is the developer of Protector Plus range of anti virus software packages. Protector Plus anti virus is available for Windows XP, Windows Me/98/95, Windows NT/2000/2003 servers and workstations, MS-Exchange 2000/2003, MS-DOS and NetWare servers.

Protector Plus range of anti virus products offer on-line virus detection and removal. All the packages have the ability to detect and isolate all types of viruses, trojans, worms and other types of malware. Protector Plus antivirus software can detect and remove W32/Bagle.N worm reliably.

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