ThreatExpert Report: W32.Virut.CF, Virus.Win32.Virut.ce, W32/Virut.n.gen, W32/Scribble-B..

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Submission Summary:

Submission details:

Submission received: 10 August 2012, 16:07:17
Processing time: 9 min 50 sec
Submitted sample:

File MD5: 0xC11A509DAB7C8AE45BFAD75B6D15F974
File SHA-1: 0x852A35C3FCCA4B47DC1297510F311C72881AEEB8
Filesize: 290,333 bytes
Alias:

W32.Virut.CF [Symantec]
Virus.Win32.Virut.ce [Kaspersky Lab]
W32/Virut.n.gen [McAfee]
W32/Scribble-B [Sophos]
Virus:Win32/Virut.BN [Microsoft]
Virus.Win32.Virut [Ikarus]

Summary of the findings:

What's been found	Severity Level
Creates a startup registry entry.
There were some system executable files modified, which might indicate the presence of a PE-file infector.
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

Attention! The following threat category was identified:

Threat Category	Description
	A virus capable to modify other files by infecting, prepending, or overwriting them them with its own body

File System Modifications

The following file was created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%ProgramFiles%\Bifrost\server.exe [file and pathname of the sample #1]	290,333 bytes	MD5: 0xC11A509DAB7C8AE45BFAD75B6D15F974 SHA-1: 0x852A35C3FCCA4B47DC1297510F311C72881AEEB8	W32.Virut.CF [Symantec] Virus.Win32.Virut.ce [Kaspersky Lab] W32/Virut.n.gen [McAfee] W32/Scribble-B [Sophos] Virus:Win32/Virut.BN [Microsoft] Virus.Win32.Virut [Ikarus]

Note:

%ProgramFiles% is a variable that refers to the Program Files folder. A typical path is C:\Program Files.

The following files were modified:

[pathname with a string SHARE]\msinfo32.exe
[pathname with a string SHARE]\sapisvr.exe
%ProgramFiles%\Internet Explorer\Connection Wizard\icwconn1.exe
%ProgramFiles%\Internet Explorer\Connection Wizard\icwconn2.exe
%ProgramFiles%\Internet Explorer\Connection Wizard\icwrmind.exe
%ProgramFiles%\Internet Explorer\Connection Wizard\icwtutor.exe
%ProgramFiles%\Internet Explorer\Connection Wizard\inetwiz.exe
%ProgramFiles%\Internet Explorer\Connection Wizard\isignup.exe
%ProgramFiles%\Internet Explorer\iedw.exe
%ProgramFiles%\Internet Explorer\IEXPLORE.EXE
%ProgramFiles%\MSN\MSNIA\msniasvc.exe
%ProgramFiles%\MSN\MSNIA\prestp.exe
%ProgramFiles%\MSN\MsnInstaller\msninst.exe
%ProgramFiles%\NetMeeting\cb32.exe
%ProgramFiles%\NetMeeting\conf.exe
%ProgramFiles%\NetMeeting\wb32.exe
%ProgramFiles%\Outlook Express\msimn.exe
%ProgramFiles%\Outlook Express\oemig50.exe
%ProgramFiles%\Outlook Express\setup50.exe
%ProgramFiles%\Outlook Express\wab.exe
%ProgramFiles%\Outlook Express\wabmig.exe
%ProgramFiles%\Web Publish\WPWIZ.EXE
%ProgramFiles%\Windows Media Player\migrate.exe
%ProgramFiles%\Windows Media Player\mplayer2.exe
%ProgramFiles%\Windows Media Player\setup_wm.exe
%ProgramFiles%\Windows Media Player\wmplayer.exe
%ProgramFiles%\Windows NT\Accessories\wordpad.exe
%ProgramFiles%\Windows NT\dialer.exe
%ProgramFiles%\Windows NT\hypertrm.exe
%ProgramFiles%\Windows NT\Pinball\PINBALL.EXE
%Windir%\Cache\Adobe Reader 6.0.1\ENUBIG\setup.exe
%Windir%\hh.exe
%Windir%\inf\unregmp2.exe
%Windir%\Installer\{350C97B0-3D7C-4EE8-BAA9-00BCB3D54227}\places.exe
%Windir%\Microsoft.NET\Framework\NETFXSBS10.exe
%Windir%\Microsoft.NET\Framework\v2.0.50727\aspnet_compiler.exe
%Windir%\Microsoft.NET\Framework\v2.0.50727\aspnet_regbrowsers.exe
%Windir%\Microsoft.NET\Framework\v2.0.50727\aspnet_regsql.exe
%Windir%\Microsoft.NET\Framework\v2.0.50727\CasPol.exe
%Windir%\Microsoft.NET\Framework\v2.0.50727\dfsvc.exe
%Windir%\Microsoft.NET\Framework\v2.0.50727\IEExec.exe
%Windir%\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe
%Windir%\Microsoft.NET\Framework\v2.0.50727\jsc.exe
%Windir%\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
%Windir%\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
%Windir%\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
%Windir%\msagent\agentsvr.exe
%Windir%\mui\muisetup.exe
%Windir%\NOTEPAD.EXE
%Windir%\pchealth\helpctr\binaries\HelpCtr.exe
%Windir%\pchealth\helpctr\binaries\HelpHost.exe
%Windir%\pchealth\helpctr\binaries\HelpSvc.exe
%Windir%\pchealth\helpctr\binaries\HscUpd.exe
%Windir%\pchealth\helpctr\binaries\msconfig.exe
%Windir%\pchealth\helpctr\binaries\notiflag.exe
%Windir%\pchealth\UploadLB\Binaries\UploadM.exe
%Windir%\regedit.exe
%System%\accwiz.exe
%System%\actmovie.exe
%System%\ahui.exe
%System%\arp.exe
%System%\asr_fmt.exe
%System%\asr_ldm.exe
%System%\asr_pfu.exe
%System%\at.exe
%System%\atmadm.exe
%System%\attrib.exe
%System%\auditusr.exe
%System%\blastcln.exe
%System%\bootcfg.exe
%System%\bootok.exe
%System%\bootvrfy.exe
%System%\cacls.exe
%System%\calc.exe
%System%\charmap.exe
%System%\chkdsk.exe
%System%\chkntfs.exe
%System%\cidaemon.exe
%System%\cipher.exe
%System%\cisvc.exe
%System%\ckcnv.exe
%System%\cleanmgr.exe
%System%\clean_all.exe
%System%\cliconfg.exe
%System%\clipbrd.exe
%System%\clipsrv.exe
%System%\cmd.exe
%System%\cmdl32.exe
%System%\cmmon32.exe
%System%\cmstp.exe
%System%\Com\comrepl.exe
%System%\Com\comrereg.exe
%System%\comp.exe
%System%\compact.exe
%System%\conime.exe
%System%\control.exe
%System%\convert.exe
%System%\cscript.exe
%System%\ctfmon.exe
%System%\dcomcnfg.exe

Notes:

%Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows or C:\Winnt.
%System% is a variable that refers to the System folder. By default, this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).

The following directories were created:

c:\System Volume Information\.
c:\System Volume Information\..
%ProgramFiles%\Bifrost

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
[filename of the sample #1]	[file and pathname of the sample #1]	567,968 bytes
server.exe	%ProgramFiles%\bifrost\server.exe	567,968 bytes

Registry Modifications

The following Registry Keys were created:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{9D71D88C-C598-4935-C5D1-43AA4DB90836}
HKEY_LOCAL_MACHINE\SOFTWARE\Bifrost
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\MediaResources\msvideo
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\MediaResources\msvideo
HKEY_CURRENT_USER\Software\Bifrost

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{9D71D88C-C598-4935-C5D1-43AA4DB90836}]

stubpath = "%ProgramFiles%\Bifrost\server.exe s"

so that server.exe runs every time Windows starts

[HKEY_LOCAL_MACHINE\SOFTWARE\Bifrost]

nck = ED 1B E6 27 B9 28 D6 32 74 C3 CD 74 FA 93 5B 67

[HKEY_CURRENT_USER\Software\Bifrost]

klg = 00

Other details

To mark the presence in the system, the following Mutex object was created:

Bif1234

The following Host Names were requested from a host database:

alsenator.no-ip.info
ilo.brenz.pl
yfoaig.com
ioeoin.com
byymoa.com
yewdns.com
tndwae.com
pislsm.com
fobnii.com
nioebe.com
bzbmre.com
jhuale.com
ant.trenz.pl
agjrwx.com
rqbpua.com
vwsblu.com
dmrvav.com
ugsddx.com
mfdmai.com
geyyks.com
pryjyi.com
thqcso.com
bwqfrk.com
yeaaxg.com
okmeog.com
arqvls.com
yneril.com
sluodi.com
spnavv.com
vuzezw.com
oohgng.com
yizcgy.com
kzoykh.com
zancji.com
mbthnh.com
cmluqm.com
hvaosu.com
cxyssf.com
zeadse.com
decasd.com
dayqmk.com
cbjmha.com
uhqqbz.com
onqpnh.com
oixaiu.com
ujngpo.com
govyta.com
mmtnpe.com
gyooyo.com
jfdqtc.com
faufsn.com
krjztu.com
pwjune.com
xzzexb.com
tmhuue.com
wkwsei.com
eiutjt.com
helgiy.com
epowgk.com
oawlam.com
avcqow.com
watocy.com
yqdhmf.com
qlmksd.com
aixkil.com
kfkizi.com
gmjuon.com
dfajrl.com
mfbcya.com
tesogz.com
zsyowe.com
gommau.com
yomzit.com
hdincp.com
ybrzuy.com
tuikkn.com
jvoyyp.com
ooytsy.com
jlonxs.com
xqiamt.com
ialydo.com
imnfce.com
ytjfwx.com
poegbd.com
cimotv.com
pfkcfz.com
antuoo.com
zqaagu.com
yyfgmy.com
dkasyg.com
ihmult.com
lhinsj.com
eomftp.com
muzabb.com
yohnjf.com
aiyymd.com
wtfphy.com
oqnuif.com
kiagpy.com
auylwr.com

There were registered attempts to establish connection with the remote hosts. The connection details are:

Remote Host	Port Number
alsenator.no-ip.info	81
yfoaig.com	443

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