ThreatExpert Report: W32/Generic.m, Worm.Win32.VB

Visit ThreatExpert web site

Close Report

Submission Summary:

Submission details:

Submission received: 18 October 2011, 07:19:29
Processing time: 10 min 36 sec
Submitted sample:

File MD5: 0x359E9F82AB0077430F831A88B416BE12
File SHA-1: 0xEF9A77D98A524DBEEC2CDA4CF79F4C8E35A9946C
Filesize: 614,400 bytes
Alias:

W32/Generic.m [McAfee]
Worm.Win32.VB [Ikarus]

Summary of the findings:

What's been found	Severity Level
Capability to block security-related software by modifying firewall settings and by disabling security services, such as Windows Update, Norton Autoprotect, Kaspersky Anti-Virus, etc.
Produces outbound traffic.
Downloads/requests other files from Internet.
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! Characteristics of the following security risks were identified in the system:

Security Risk	Description
Worm.IM.Sohanad	Worm.IM.Sohanad spreads via Yahoo Messenger and infects Windows. It sends a message to all Yahoo Messenger contacts of an infected user. The message contains a link enticing users to download the worm. The worm also disable certain Windows functionalities abd hijacks Internet Explorer homepage. It also downloads other maware and it will also attempt to propagate via the means of creating copies of itself onto removable devices such as USB flash and hard drives.
Adware.Component.Unrelated	These common components have files and keys that are in different threats but the threats are not related to one another in that the author of the signature is not the same. It is recommended that all these entries be removed.
Trojan-Downloader.Injecter.LR	Trojan-Downloader.Injecter.LR contacts a remote server in order to log an infection and attempts to download code and may install other malware.
Backdoor.Rbot.ADF	Backdoor.Rbot.ADF is a trojan which opens network ports and allows attackers to gain unauthorized access to the system. It also spreads to network shares by exploiting weak passwords.
Trojan-PWS.QQPass.AM	Trojan.PSW.QQPass.AM steals login information such as usernames and passwords and sends them via e-mail to a remote location.

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 files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%CommonPrograms%\Startup\explorer.exe %Programs%\Startup\explorer.exe c:\New Folder.exe %Windir%\svchost.exe %System%\1025.exe %System%\1028.exe %System%\1031.exe %System%\1033.exe %System%\1037.exe %System%\1041.exe %System%\1042.exe %System%\1054.exe %System%\2052.exe %System%\3076.exe %System%\3com_dmi.exe %System%\CatRoot.exe %System%\CatRoot2.exe %System%\Com.exe %System%\config.exe %System%\dhcp.exe %System%\DirectX.exe %System%\drivers.exe %System%\export.exe %System%\ias.exe %System%\icsxml.exe %System%\IME.exe %System%\inetsrv.exe %System%\Macromed.exe %System%\Microsoft.exe %System%\MsDtc.exe %System%\mui.exe %System%\npp.exe %System%\NtmsData.exe %System%\oobe.exe %System%\ras.exe %System%\ReinstallBackups.exe %System%\Restore.exe [file and pathname of the sample #1] %System%\Setup.exe %System%\ShellExt.exe %System%\spool.exe %System%\usmt.exe %System%\wbem.exe %System%\wins.exe %System%\xircom.exe	614,400 bytes	MD5: 0x359E9F82AB0077430F831A88B416BE12 SHA-1: 0xEF9A77D98A524DBEEC2CDA4CF79F4C8E35A9946C	W32/Generic.m [McAfee] Worm.Win32.VB [Ikarus]
2	%Windir%\Temp\VRT2.tmp	25,740 bytes	MD5: 0x54D69630B199ADB02D077ACCEFEDAD70 SHA-1: 0xFD8A39482BAD025E71306F4A50534D38DDBA9527	(not available)

Notes:

%CommonPrograms% is a variable that refers to the file system directory that contains the directories for the common program groups that appear on the Start menu for all users. A typical path is C:\Documents and Settings\All Users\Start Menu\Programs (Windows NT/2000/XP).
%Programs% is a variable that refers to the file system directory that contains the user's program groups. A typical path is C:\Documents and Settings\[UserName]\Start Menu\Programs.
%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 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%\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%\comp.exe
%System%\compact.exe
%System%\conime.exe
%System%\control.exe
%System%\convert.exe
%System%\cscript.exe
%System%\ctfmon.exe
%System%\dcomcnfg.exe
%System%\ddeshare.exe
%System%\defrag.exe
%System%\dfrgfat.exe

Notes:

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

The following directories were created:

c:\System Volume Information\.
c:\System Volume Information\..
c:\New Folder

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
svchost.exe	%Windir%\svchost.exe	630,784 bytes
explorer.exe	%CommonPrograms%\startup\explorer.exe	630,784 bytes
explorer.exe	%Programs%\startup\explorer.exe	630,784 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	630,784 bytes

Registry Modifications

The following Registry Keys were created:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ESENT\Process\3kvq
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ESENT\Process\3kvq\DEBUG
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ESENT\Process\VRT2
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ESENT\Process\VRT2\DEBUG
HKEY_LOCAL_MACHINE\SOFTWARE\tgs90gv74r
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\MouseDriver
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\MouseDriver\Security

The newly created Registry Values are:

[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer]

UpdateHost = 00 50 5F 8F C1 76

[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings]

ProxyEnable = 0x00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ESENT\Process\3kvq\DEBUG]

Trace Level = ""

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ESENT\Process\VRT2\DEBUG]

Trace Level = ""

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]

v0lut47 = "%AppData%\3kvq.exe"

[HKEY_LOCAL_MACHINE\SOFTWARE\tgs90gv74r]

tgs90gv74rexepath = "%AppData%\3kvq.exe"
tgs90gv74rpath = "%AppData%\"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\MouseDriver\Security]

Security = 01 00 14 80 90 00 00 00 9C 00 00 00 14 00 00 00 30 00 00 00 02 00 1C 00 01 00 00 00 02 80 14 00 FF 01 0F 00 01 01 00 00 00 00 00 01 00 00 00 00 02 00 60 00 04 00 00 00 00 00 14 00 FD 01 02 00 01 01 00 00 00 00 00 05 12 00 00 00 00 00 18 00 FF 01 0F 0

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\MouseDriver]

Type = 0x00000110
Start = 0x00000002
ErrorControl = 0x00000000
ImagePath = "%AppData%\MouseDriver.bat"
DisplayName = "MouseDriver"
ObjectName = "LocalSystem"
Description = "Enables a computer to use mouse from USB port. Stopping or disabling this service will result in system instability."

The following Registry Value was modified:

[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]

Cookies =
Cache =
History =

Other details

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

Remote Host	Port Number
60.190.223.60	2012
95.143.193.118	80

The data identified by the following URL was then requested from the remote web server:

http://sb.letmedo.net:2012/p/out/kp.exe

Outbound traffic (potentially malicious)

There was an outbound traffic produced on port 80:

All content ("Information") contained in this report is the copyrighted work of Threat Expert Ltd and its associated companies ("ThreatExpert") and may not be copied without the express permission of ThreatExpert.

The Information is provided on an "as is" basis. ThreatExpert disclaims all warranties, whether express or implied, to the maximum extent permitted by law, including the implied warranties that the Information is merchantable, of satisfactory quality, accurate, fit for a particular purpose or need, or non-infringing, unless such implied warranties are legally incapable of exclusion. Further, ThreatExpert does not warrant or make any representations regarding the use or the results of the use of the Information in terms of their correctness, accuracy, reliability, or otherwise.