Virus Database

Kwok.1618

Description Kwok.1618

It is not a dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the beginning of .COM files that are accessed with FindFirst (AH=4Eh) function. On 1st of any month it manifests itself with a video effect and overwrites COMMAND.COM file. The virus contains the text string:
Made in Hong Kong (Shatin)

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I-Worm.Bagle.d

Description I-Worm.Bagle.d
This worm spreads via the Internet in the form of an attachment to infected emails.
The worm itself is a PE EXE file of approximately 15KB, compressed using UPX. The size of the decompressed file is approximately 28KB.
Characteristics of infected messages
Message header:
Accounts department
Ahtung!
Camila
Daily activity report
Flayers among us
Freedom for everyone
From Hair-cutter
From me
Greet the day
Hardware devices price-list
Hello my friend
Hi!
Jenny
Jessica
Looking for the report
Maria
Melissa
Monthly incomings summary
New Price-list
Price
Price list
Pricelist
Price-list
Proclivity to servitude
Registration confirmation
The account
The employee
The summary
USA government abolishes the capital punishment
Weekly activity report
Wellall
You are dismissed
You really love me? he he
Message body:
Empty.
Attachment:
A ZIP file with a random name, with a file size of 15994 bytes. The zipped file contains an EXE file with a random name and and Excel icon.
Installation
Once launched, the worm copies itself and all components to the Windows system directory under the names 'readme.exe', 'onde.exe', doc.exe' and 'readme.exeopen' and then registers 'readme.exe in the system registry auto-run key:
[HKLMSOFTWAREMicrosoftWindowsCurrentVersionRun
"gouday.exe" = "%system% eadme.exe"]
Also creates the following registry key:
[HKCUSOFTWAREDataTime3]
and saves its variables there.
The worm attempts to connect to a number of remote sites, storing information about the infected machine on theses sites.
On launching, the worm launches the MS Notepad (notepad.exe).
Propagation
The worm searches for files with the following extensions:
adb
asp
cfg
dbx
eml
htm
html
mdx
mmf
nch
ods
php
pl
sht
txt
wab
and send itself to all email addresses found in these files. The worm uses its own SMTP server to send email.
Remote administration
The worm opens and monitors port 2745. A backdoor function means that commands can then be executed and files can be downloaded on the victim computer, with all of this being done from a remote location.
Other
The worm attempts to block antivirus database updates by terminating the following processes:
ATUPDATER.EXE
ATUPDATER.EXE
AUPDATE.EXE
AUTODOWN.EXE
AUTOTRACE.EXE
AUTOUPDATE.EXE
AVLTMAIN.EXE
AVPUPD.EXE
AVWUPD32.EXE
AVXQUAR.EXE
CFIAUDIT.EXE
DRWEBUPW.EXE
ICSSUPPNT.EXE
ICSUPP95.EXE
LUALL.EXE
MCUPDATE.EXE
NUPGRADE.EXE
NUPGRADE.EXE
OUTPOST.EXE
UPDATE.EXE
Bagle.d is programmed to stop propagating after March 14, 2004.

I-Worm.Bagle.e

Description I-Worm.Bagle.e
This worm spreads via the Internet as a file attached to infected emails. The worm itself is a PE EXE file of approximately 17KB, packed using PEX. The unpacked file is approximately 27KB in size.
Infected messages have the following characteristics:
Message header (chosen from the list below):
Accounts department
Ahtung!
Camila
Daily activity report
Ello!
Flayers among us
Freedom for everyone
From Hair-cutter
From me
Greet the day
Hardware devices price-list
Hello my friend
Hi!
Jenny
Jessica
Looking for the report
Maria
Melissa
Monthly incomings summary
New Price-list
Price
Price list
Pricelist
Price-list
Proclivity to servitude
Registration confirmation
The account
The employee
The summary
USA government abolishes the capital punishment Weekly activity report Wellall
You are dismissed
You really love me? he he
Message body (chosen from the list below):
Cya
Empty
Everything inside the attach
Look it through
Request
Response
Subj
Attachment:
The attachment is a zip file which a name consisting of a random combination of a, b, and c (e.g. cdda.zip). Inside the .zip file is an .exe file with a random name, containing a text file icon.
Installation
Following installation, the worm copies itself and its components to the Windows system directory, under the names "i1ru74n4.exe", "godo.exe", "ii455nj4.exe", and "i1ru74n4.exeopen". It registers "i1ru74n4.exe" in the system registry auto-run key:
[HKLMSOFTWAREMicrosoftWindowsCurrentVersionRun]
"rate.exe" = "%system%i1ru74n4.exe"
The worm also creates the registry key:
[HKCUSOFTWAREDateTime4]
and saves its variables in the key.
The worm attempts to connect to several sites and save information about the infected victim computer on these sites.
The worm also creates a mutex imain_mutex to flag its presence in memory.
Propagation
The worm searches for files with the following extentions:
adb
asp
cfg
dbx
eml
htm
html
mdx
mmf
nch
ods
php
pl
sht
txt
wab
harvests email addresses, and then sends itself to all addresses found. To send messages, the worm uses its own SMTP server.
Remote administration
The worm opens port 2745 and tracks port activity. The backdoor function makes it possible to remotely execute commands and download files to the victim machine.
Other
The worm attempts to counteract antivirus programs by terminating the following processes:
ATUPDATER.EXE
AUPDATE.EXE
AUTODOWN.EXE
AUTOTRACE.EXE
AUTOUPDATE.EXE
AVLTMAIN.EXE
AVPUPD.EXE
AVWUPD32.EXE
AVXQUAR.EXE
CFIAUDIT.EXE
DRWEBUPW.EXE
ICSSUPPNT.EXE
ICSUPP95.EXE
LUALL.EXE
MCUPDATE.EXE
NUPGRADE.EXE
OUTPOST.EXE
UPDATE.EXE
The worm is programmed to cease propagation after 25th March 2004.

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