Another new Bagle variant was found on April 26th, 2004. This
variant differs from the ones that we've seen before. The worm
sends itself in several different types of e-mails. Also the worm
copies itself to shared folders with different names and opens a
backdoor on an infected computer.
The worm's executable file icon looks like a cherry:
F-Secure provides the special disinfection utility to eliminate
Bagle.Y worm infection. You can download this utility from our
ftp site:
ftp://ftp.f-secure.com/anti-virus/tools/f-bagle.exe
ftp://ftp.f-secure.com/anti-virus/tools/f-bagle.zip
Disinfection instructions can be found here:
ftp://ftp.f-secure.com/anti-virus/tools/f-bagle.txt
System administrators who are using F-Secure Policy Manager,
can distribute the tool as a JAR package automatically to all
workstations.
System administrators can download the JAR version from:
http://www.europe.f-secure.com/tools/f-bagle.jar
ftp://ftp.europe.f-secure.com/anti-virus/tools/f-bagle.jar
The worm is a PE executable about 39 kilobytes long. The worm's
file is packed with UPX file compressor. Additionally the worm
uses encryption of its code and data areas and adds random
garbage to the end of its file as a decoy. The worm can also
spread with a prepended CPL stub (see info below).
Installation to system
When the worm's file is run, it copies itself as DRVSYS.EXE file
to Windows System folder and creates a startup key for this file
in the Registry:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"drvsys.exe" = "%winsysdir%\drvsys.exe"
where %winsysdir% represents Windows System folder name.
The worm creates 2 more files in Windows System folder:
drvsys.exeopen
drvsys.exeopenopen
These files are used when the worm spreads itself in e-mails.
Additionally the worm shows a fake error messagebox with the
following text:
Error!
Can't find a viewer associated with the file
Spreading in e-mail
The worm scans a hard drive to collect victims' e-mail addresses.
It scans files with the following extensions:
.wab
.txt
.msg
.htm
.shtm
.stm
.xml
.dbx
.mbx
.mdx
.eml
.nch
.mmf
.ods
.cfg
.asp
.php
.pl
.wsh
.adb
.tbb
.sht
.xls
.oft
.uin
.cgi
.mht
.dhtm
.jsp
The worm ignores e-mail addresses that contain the following
strings:
@hotmail
@msn
@microsoft
rating@
f-secur
news
update
anyone@
bugs@
contract@
feste
gold-certs@
help@
info@
nobody@
noone@
kasp
admin
icrosoft
support
ntivi
unix
bsd
linux
listserv
certific
sopho
@foo
@iana
free-av
@messagelab
winzip
google
winrar
samples
abuse
panda
cafee
spam
pgp
@avp.
noreply
local
root@
postmaster@
The worm spreads itself in e-mails. It composes several different
types of e-mail messages. The worm can attach itself as an
executable file with COM, EXE, SCR and CPL extension (see below),
as a ZIP archive (password-protected) and also as an HTA and VBS
files that contain a script dropper for the worm's binary file.
The HTA file that the worm sends in e-mails looks like windows
update and is minimized and closed quickly. It creates the VBS
file named QQ.VBS that drops the BBBS.EXE file - the worm's
executable file. The VBS file that the worm sends just drops and
runs the BBBS.EXE file.
When spreading as a CPL file, the worm prepends a small binary
dropper to its executable file. When the CPL file is activated,
it copies itself as CPLSTUB.EXE file to Windows folder and then
drops the worm's file into Windows System folder.
The worm can attach an image of a girl to its message. There are
3 girl images inside the worm's body.
Backdoor
The worm has a backdoor that listens to port 2535. When active,
the worm periodically connects to websites (it has a hardcoded
list of 93 websites) and reports backdoor's ID and backdoor's
port to the worm author.
Spreading to shared folders
The worm is capable of spreading to shared folders. It scans all
available drives and if it finds a folder name that contains
'shar' substring, the worm copies itself there with the following
names:
Microsoft Office 2003 Crack, Working!.exe
Microsoft Windows XP, WinXP Crack, working Keygen.exe
Microsoft Office XP working Crack, Keygen.exe
Porno, sex, oral, anal cool, awesome!!.exe
Porno Screensaver.scr
Serials.txt.exe
KAV 5.0
Kaspersky Antivirus 5.0
Porno pics arhive, xxx.exe
Windows Sourcecode update.doc.exe
Ahead Nero 7.exe
Windown Longhorn Beta Leak.exe
Opera 8 New!.exe
XXX hardcore images.exe
WinAmp 6 New!.exe
WinAmp 5 Pro Keygen Crack Update.exe
Adobe Photoshop 9 full.exe
Matrix 3 Revolution English Subtitles.exe
ACDSee 9.exe
This method allows the worm to spread to shared folders if P2P
(peer-to-peer) clients and to shared network folders.
Terminating processes
Bagle.Y terminates processes of security and anti-virus software
as well as some other applications. Processes of the following
applications are terminated:
OUTPOST.EXE
NMAIN.EXE
NORTON_INTERNET_SECU_3.0_407.EXE
NPF40_TW_98_NT_ME_2K.EXE
NPFMESSENGER.EXE
NPROTECT.EXE
NSCHED32.EXE
NTVDM.EXE
NVARCH16.EXE
KERIO-WRP-421-EN-WIN.EXE
KILLPROCESSSETUP161.EXE
LDPRO.EXE
LOCALNET.EXE
LOCKDOWN.EXE
LOCKDOWN2000.EXE
LSETUP.EXE
CLEANPC.EXE
AVprotect9x.exe
CMGRDIAN.EXE
CMON016.EXE
CPF9X206.EXE
CPFNT206.EXE
CV.EXE
CWNB181.EXE
CWNTDWMO.EXE
ICSSUPPNT.EXE
DEFWATCH.EXE
DEPUTY.EXE
DPF.EXE
DPFSETUP.EXE
DRWATSON.EXE
ENT.EXE
ESCANH95.EXE
AVXQUAR.EXE
ESCANHNT.EXE
ESCANV95.EXE
AVPUPD.EXE
EXANTIVIRUS-CNET.EXE
FAST.EXE
FIREWALL.EXE
FLOWPROTECTOR.EXE
FP-WIN_TRIAL.EXE
FRW.EXE
FSAV.EXE
AUTODOWN.EXE
FSAV530STBYB.EXE
FSAV530WTBYB.EXE
FSAV95.EXE
GBMENU.EXE
GBPOLL.EXE
GUARD.EXE
GUARDDOG.EXE
HACKTRACERSETUP.EXE
HTLOG.EXE
HWPE.EXE
IAMAPP.EXE
IAMAPP.EXE
IAMSERV.EXE
ICLOAD95.EXE
ICLOADNT.EXE
ICMON.EXE
ICSUPP95.EXE
ICSUPPNT.EXE
IFW2000.EXE
IPARMOR.EXE
IRIS.EXE
JAMMER.EXE
ATUPDATER.EXE
AUPDATE.EXE
KAVLITE40ENG.EXE
KAVPERS40ENG.EXE
KERIO-PF-213-EN-WIN.EXE
KERIO-WRL-421-EN-WIN.EXE
BORG2.EXE
BS120.EXE
CDP.EXE
CFGWIZ.EXE
CFIADMIN.EXE
CFIAUDIT.EXE
AUTOUPDATE.EXE
CFINET.EXE
NAVAPW32.EXE
NAVDX.EXE
NAVSTUB.EXE
NAVW32.EXE
NC2000.EXE
NCINST4.EXE
AUTOTRACE.EXE
NDD32.EXE
NEOMONITOR.EXE
NETARMOR.EXE
NETINFO.EXE
NETMON.EXE
NETSCANPRO.EXE
NETSPYHUNTER-1.2.EXE
NETSTAT.EXE
NISSERV.EXE
NISUM.EXE
CFIAUDIT.EXE
LUCOMSERVER.EXE
AGENTSVR.EXE
ANTI-TROJAN.EXE
ANTI-TROJAN.EXE
ANTIVIRUS.EXE
ANTS.EXE
APIMONITOR.EXE
APLICA32.EXE
APVXDWIN.EXE
ATCON.EXE
ATGUARD.EXE
ATRO55EN.EXE
ATWATCH.EXE
AVCONSOL.EXE
AVGSERV9.EXE
AVSYNMGR.EXE
BD_PROFESSIONAL.EXE
BIDEF.EXE
BIDSERVER.EXE
BIPCP.EXE
BIPCPEVALSETUP.EXE
BISP.EXE
BLACKD.EXE
BLACKICE.EXE
BOOTWARN.EXE
NWINST4.EXE
NWTOOL16.EXE
OSTRONET.EXE
OUTPOSTINSTALL.EXE
OUTPOSTPROINSTALL.EXE
PADMIN.EXE
PANIXK.EXE
PAVPROXY.EXE
DRWEBUPW.EXE
PCC2002S902.EXE
PCC2K_76_1436.EXE
PCCIOMON.EXE
PCDSETUP.EXE
PCFWALLICON.EXE
PCFWALLICON.EXE
PCIP10117_0.EXE
PDSETUP.EXE
PERISCOPE.EXE
PERSFW.EXE
PF2.EXE
AVLTMAIN.EXE
PFWADMIN.EXE
PINGSCAN.EXE
PLATIN.EXE
POPROXY.EXE
POPSCAN.EXE
PORTDETECTIVE.EXE
PPINUPDT.EXE
PPTBC.EXE
PPVSTOP.EXE
PROCEXPLORERV1.0.EXE
PROPORT.EXE
PROTECTX.EXE
PSPF.EXE
WGFE95.EXE
WHOSWATCHINGME.EXE
AVWUPD32.EXE
NUPGRADE.EXE
WHOSWATCHINGME.EXE
WINRECON.EXE
WNT.EXE
WRADMIN.EXE
WRCTRL.EXE
WSBGATE.EXE
WYVERNWORKSFIREWALL.EXE
XPF202EN.EXE
ZAPRO.EXE
ZAPSETUP3001.EXE
ZATUTOR.EXE
CFINET32.EXE
CLEAN.EXE
CLEANER.EXE
CLEANER3.EXE
CLEANPC.EXE
CMGRDIAN.EXE
CMON016.EXE
CPD.EXE
CFGWIZ.EXE
CFIADMIN.EXE
PURGE.EXE
PVIEW95.EXE
QCONSOLE.EXE
QSERVER.EXE
RAV8WIN32ENG.EXE
REGEDT32.EXE
REGEDIT.EXE
UPDATE.EXE
RESCUE.EXE
RESCUE32.EXE
RRGUARD.EXE
RSHELL.EXE
RTVSCN95.EXE
RULAUNCH.EXE
SAFEWEB.EXE
SBSERV.EXE
SD.EXE
SETUP_FLOWPROTECTOR_US.EXE
SETUPVAMEEVAL.EXE
SFC.EXE
SGSSFW32.EXE
SH.EXE
SHELLSPYINSTALL.EXE
SHN.EXE
SMC.EXE
SOFI.EXE
SPF.EXE
SPHINX.EXE
SPYXX.EXE
SS3EDIT.EXE
ST2.EXE
SUPFTRL.EXE
LUALL.EXE
SUPPORTER5.EXE
SYMPROXYSVC.EXE
SYSEDIT.EXE
TASKMON.EXE
TAUMON.EXE
TAUSCAN.EXE
TC.EXE
TCA.EXE
TCM.EXE
TDS2-98.EXE
TDS2-NT.EXE
TDS-3.EXE
TFAK5.EXE
TGBOB.EXE
TITANIN.EXE
TITANINXP.EXE
TRACERT.EXE
TRJSCAN.EXE
TRJSETUP.EXE
TROJANTRAP3.EXE
UNDOBOOT.EXE
VBCMSERV.EXE
VBCONS.EXE
VBUST.EXE
VBWIN9X.EXE
VBWINNTW.EXE
VCSETUP.EXE
VFSETUP.EXE
VIRUSMDPERSONALFIREWALL.EXE
VNLAN300.EXE
VNPC3000.EXE
VPC42.EXE
VPFW30S.EXE
VPTRAY.EXE
VSCENU6.02D30.EXE
VSECOMR.EXE
VSHWIN32.EXE
VSISETUP.EXE
VSMAIN.EXE
VSMON.EXE
VSSTAT.EXE
VSWIN9XE.EXE
VSWINNTSE.EXE
VSWINPERSE.EXE
W32DSM89.EXE
W9X.EXE
WATCHDOG.EXE
WEBSCANX.EXE
CFIAUDIT.EXE
CFINET.EXE
ICSUPP95.EXE
MCUPDATE.EXE
CFINET32.EXE
CLEAN.EXE
CLEANER.EXE
LUINIT.EXE
MCAGENT.EXE
MCUPDATE.EXE
MFW2EN.EXE
MFWENG3.02D30.EXE
MGUI.EXE
MINILOG.EXE
MOOLIVE.EXE
MRFLUX.EXE
MSCONFIG.EXE
MSINFO32.EXE
MSSMMC32.EXE
MU0311AD.EXE
NAV80TRY.EXE
ZAUINST.EXE
ZONALM2601.EXE
ZONEALARM.EXE
Uninstalling Netsky worm
Looks like the war between Bagle and Netsky authors is still
going on. This variant of Bagle removes the following Netsky worm
startup keys:
My AV
Zone Labs Client Ex
9XHtProtect
Antivirus
Special Firewall Service
service
Tiny AV
ICQNet
HtProtect
NetDy
Jammer2nd
FirewallSvr
MsInfo
SysMonXP
EasyAV
PandaAVEngine
Norton Antivirus AV
KasperskyAVEng
ICQ Net
F-Secure Anti-Virus detects Bagle.Y worm with the following
update:
[FSAV_Database_Version]
Version=2004-04-26_03
Technical Details:
Alexey Podrezov and Katrin Tocheva, April 26th, 2004;
Description Updated:
Alexey Podrezov, May 5th, 2004;
F-Secure Corporation
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