W32/Brontok-A

Please follow the instructions for removing worms.

Please read the instructions for removing W32/Brontok-A.

W32/Brontok-A is an email worm that sends itself to the addresses gathered from the infected computer by searching files with the following extensions:

ASP, CFM, CSV, DOC, EML, HTML, PHP, TXT, WAB

W32/Brontok-A skips email addresses that contain the following strings:

PLASA, TELKOM, INDO, .CO.ID, GO.ID, .MIL.ID, .SCH.ID, .NET.ID, .OR.ID, AC.ID, .WEB.ID, .WAR.NET.ID, ASTAGA, GAUL, BOLEH, EMAILKU, SATU

W32/Brontok-A may arrive attached with the filename Kangen.exe to the email with the blank subject and following message text:

BRONTOK.A [ By: H[REMOVED]Community ]
-- Hentikan kebobrokan di negeri ini --
1. Adili Koruptor, Penyelundup, Tukang Suap, Penjudi, & Bandar NARKOBA
( Send to "NUSAKAMBANGAN")
2. Stop Free Sex, Absorsi, & Prostitusi
3. Stop (pencemaran laut & sungai), pembakaran hutan & perburuan liar.
4. SAY NO TO DRUGS !!!
-- KIAMAT SUDAH DEKAT --
Terinspirasi oleh: Elang Brontok (Spizaetus Cirrhatus) yang hampir punah[ By: H[REMOVED]unity --

When first run W32/Brontok-A copies itself to:

<User>\Local Settings\Application Data\csrss.exe
<User>\Local Settings\Application Data\inetinfo.exe
<User>\Local Settings\Application Data\lsass.exe
<User>\Local Settings\Application Data\services.exe
<User>\Local Settings\Application Data\smss.exe
<Windows>\ShellNew\ElnorB.exe

The following registry entries are created to run smss.exe and ElnorB.exe on startup:

HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Tok-Cirrhatus
<User>\Local Settings\Application Data\smss.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Bron-Spizaetus
<Windows>\ShellNew\ElnorB.exe

The following registry entry is set, disabling the registry editor (regedit):

HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System
DisableRegistryTools
1

Registry entries are set as follows:

HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
NoFolderOptions
1

HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System
DisableCMD
0

HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
Hidden
0

HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
HideFileExt
1

HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
ShowSuperHidden
0

W32/Brontok-A will restart a computer every time when finds a windows with the title that contains one of the following strings:

..
.@
@.
.ASP
.EXE
.HTM
.JS
.PHP
ADMIN
ADOBE
AHNLAB
ALADDIN
ALERT
ALWIL
ANTIGEN
APACHE
APPLICATION
ARCHIEVE
ASDF
ASSOCIATE
AVAST
AVG
AVIRA
BILLING@
BLACK
BLAH
BLEEP
BUILDER
CANON
CENTER
CILLIN
CISCO
CMD.
CNET
COMMAND
COMMAND PROMPT
CONTOH
CONTROL
CRACK
DARK
DATA
DATABASE
DEMO
DETIK
DEVELOP
DOMAIN
DOWNLOAD
ESAFE
ESAVE
ESCAN
EXAMPLE
FEEDBACK
FIREWALL
FOO@
FUCK
FUJITSU
GATEWAY
GOOGLE
GRISOFT
GROUP
HACK
HAURI
HIDDEN
HP.
IBM.
INFO@
INTEL.
KOMPUTER
LINUX
LOG OFF WINDOWS
LOTUS
MACRO
MALWARE
MASTER
MCAFEE
MICRO
MICROSOFT
MOZILLA
MYSQL
NETSCAPE
NETWORK
NEWS
NOD32
NOKIA
NORMAN
NORTON
NOVELL
NVIDIA
OPERA
OVERTURE
PANDA
PATCH
POSTGRE
PROGRAM
PROLAND
PROMPT
PROTECT
PROXY
RECIPIENT
REGISTRY
RELAY
RESPONSE
ROBOT
SCAN
SCRIPT HOST
SEARCH R
SECURE
SECURITY
SEKUR
SENIOR
SERVER
SERVICE
SHUT DOWN
SIEMENS
SMTP
SOFT
SOME
SOPHOS
SOURCE
SPAM
SPERSKY
SUN.
SUPPORT
SYBARI
SYMANTEC
SYSTEM CONFIGURATION
TEST
TREND
TRUST
UPDATE
UTILITY
VAKSIN
VIRUS
W3.
WINDOWS SECURITY.VBS
WWW
XEROX
XXX
YOUR
ZDNET
ZEND
ZOMBIE