ALIASES:

Trojan:Win32/Malex.gen!J (Microsoft); RDN/Generic.dx!xx (McAfee); Virus.Win32.Delf.cf (Kaspersky); BehavesLike.Win32.Malware.wsc (mx-v) (Sunbelt); May be infected by unknown virus Win32/DH{LmQDZ19iD1w} (AVG)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Worm

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This worm arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size: 417,280 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 14 May 2013

Arrival Details

This worm arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This worm drops the following copies of itself into the affected system:

  • {malware path and file name}\patch.exe
  • %System Root%\AUTOEXEC.BAT\patch.exe
  • %System Root%\boot.ini\patch.exe
  • %System Root%\CONFIG.SYS\patch.exe
  • %System Root%\Documents and Settings\patch.exe
  • %System Root%\IO.SYS\patch.exe
  • %System Root%\MSDOS.SYS\patch.exe
  • %System Root%\NTDETECT.COM\patch.exe
  • %System Root%\ntldr\patch.exe
  • %System Root%\pagefile.sys\patch.exe
  • %Program Files%\patch.exe
  • %System Root%\System Volume Information\patch.exe
  • %Windows%\patch.exe
  • {malware file name}\patch.exe
  • AUTOEXEC.BAT\patch.exe
  • boot.ini\patch.exe
  • CONFIG.SYS\patch.exe
  • Documents and Settings\patch.exe
  • IO.SYS\patch.exe
  • MSDOS.SYS\patch.exe
  • NTDETECT.COM\patch.exe
  • ntldr\patch.exe
  • pagefile.sys\patch.exe
  • Program Files\patch.exe
  • System Volume Information\patch.exe
  • WINDOWS\patch.exe
  • WINDOWS\.\patch.exe
  • WINDOWS\..\patch.exe
  • WINDOWS\$MSI31Uninstall_KB893803v2$\patch.exe
  • WINDOWS\$NtUninstallWIC$\patch.exe
  • WINDOWS\0.log\patch.exe
  • WINDOWS\addins\patch.exe
  • WINDOWS\AppPatch\patch.exe
  • WINDOWS\assembly\patch.exe
  • WINDOWS\Blue Lace 16.bmp\patch.exe
  • WINDOWS\bootstat.dat\patch.exe
  • WINDOWS\clock.avi\patch.exe
  • WINDOWS\cmsetacl.log\patch.exe
  • WINDOWS\Coffee Bean.bmp\patch.exe
  • WINDOWS\comsetup.log\patch.exe
  • WINDOWS\Config\patch.exe
  • WINDOWS\Connection Wizard\patch.exe
  • WINDOWS\control.ini\patch.exe
  • WINDOWS\Cursors\patch.exe
  • WINDOWS\Debug\patch.exe
  • WINDOWS\desktop.ini\patch.exe
  • WINDOWS\Downloaded Program Files\patch.exe
  • WINDOWS\Driver Cache\patch.exe
  • WINDOWS\DtcInstall.log\patch.exe
  • WINDOWS\ehome\patch.exe
  • WINDOWS\explorer.exe\patch.exe
  • WINDOWS\explorer.scf\patch.exe
  • WINDOWS\FaxSetup.log\patch.exe
  • WINDOWS\FeatherTexture.bmp\patch.exe
  • WINDOWS\Fonts\patch.exe
  • WINDOWS\Gone Fishing.bmp\patch.exe
  • WINDOWS\Greenstone.bmp\patch.exe
  • WINDOWS\Help\patch.exe
  • WINDOWS\hh.exe\patch.exe
  • WINDOWS\iis6.log\patch.exe
  • WINDOWS\ime\patch.exe
  • WINDOWS\imsins.BAK\patch.exe
  • WINDOWS\imsins.log\patch.exe
  • WINDOWS\inf\patch.exe
  • WINDOWS\Installer\patch.exe
  • WINDOWS\java\patch.exe
  • WINDOWS\KB893803v2.log\patch.exe
  • WINDOWS\MedCtrOC.log\patch.exe
  • WINDOWS\Media\patch.exe
  • WINDOWS\Microsoft.NET\patch.exe
  • WINDOWS\msagent\patch.exe
  • WINDOWS\msapps\patch.exe
  • WINDOWS\msdfmap.ini\patch.exe
  • WINDOWS\msgsocm.log\patch.exe
  • WINDOWS\msmqinst.log\patch.exe
  • WINDOWS\mui\patch.exe
  • WINDOWS\netfxocm.log\patch.exe
  • WINDOWS\NOTEPAD.EXE\patch.exe
  • WINDOWS\ntdtcsetup.log\patch.exe
  • WINDOWS\ocgen.log\patch.exe
  • WINDOWS\ocmsn.log\patch.exe
  • WINDOWS\ODBCINST.INI\patch.exe
  • WINDOWS\OEWABLog.txt\patch.exe
  • WINDOWS\Offline Web Pages\patch.exe
  • WINDOWS\patch.exe\patch.exe
  • WINDOWS\pchealth\patch.exe
  • WINDOWS\PeerNet\patch.exe
  • WINDOWS\Prairie Wind.bmp\patch.exe
  • WINDOWS\Prefetch\patch.exe
  • WINDOWS\Provisioning\patch.exe
  • WINDOWS\regedit.exe\patch.exe
  • WINDOWS\Registration\patch.exe
  • WINDOWS\REGLOCS.OLD\patch.exe
  • WINDOWS\regopt.log\patch.exe
  • WINDOWS\repair\patch.exe
  • WINDOWS\Resources\patch.exe
  • WINDOWS\Rhododendron.bmp\patch.exe
  • WINDOWS\River Sumida.bmp\patch.exe
  • WINDOWS\Santa Fe Stucco.bmp\patch.exe
  • WINDOWS\SchedLgU.Txt\patch.exe
  • WINDOWS\security\patch.exe
  • WINDOWS\sessmgr.setup.log\patch.exe
  • WINDOWS\SET3.tmp\patch.exe
  • WINDOWS\SET4.tmp\patch.exe
  • WINDOWS\SET8.tmp\patch.exe
  • WINDOWS\setupact.log\patch.exe
  • WINDOWS\setupapi.log\patch.exe
  • WINDOWS\setuperr.log\patch.exe
  • WINDOWS\setuplog.txt\patch.exe
  • WINDOWS\Soap Bubbles.bmp\patch.exe
  • WINDOWS\SoftwareDistribution\patch.exe
  • WINDOWS\srchasst\patch.exe
  • WINDOWS\Sti_Trace.log\patch.exe
  • WINDOWS\system\patch.exe
  • WINDOWS\system.ini\patch.exe
  • WINDOWS\system32\patch.exe
  • WINDOWS\tabletoc.log\patch.exe
  • WINDOWS\TASKMAN.EXE\patch.exe
  • WINDOWS\Tasks\patch.exe
  • WINDOWS\Temp\patch.exe
  • WINDOWS\tsoc.log\patch.exe
  • WINDOWS\twain.dll\patch.exe
  • WINDOWS\twain_32\patch.exe
  • WINDOWS\twain_32.dll\patch.exe
  • WINDOWS\twunk_16.exe\patch.exe
  • WINDOWS\twunk_32.exe\patch.exe
  • WINDOWS\vb.ini\patch.exe
  • WINDOWS\vbaddin.ini\patch.exe
  • WINDOWS\vmmreg32.dll\patch.exe
  • WINDOWS\Web\patch.exe
  • WINDOWS\wiadebug.log\patch.exe
  • WINDOWS\wiaservc.log\patch.exe
  • WINDOWS\win.ini\patch.exe
  • WINDOWS\WindowsShell.Manifest\patch.exe
  • WINDOWS\WindowsUpdate.log\patch.exe
  • WINDOWS\winhelp.exe\patch.exe
  • WINDOWS\winhlp32.exe\patch.exe
  • WINDOWS\winnt.bmp\patch.exe
  • WINDOWS\winnt256.bmp\patch.exe
  • WINDOWS\WinSxS\patch.exe
  • WINDOWS\wmsetup.log\patch.exe
  • WINDOWS\WMSysPr9.prx\patch.exe
  • WINDOWS\Zapotec.bmp\patch.exe
  • WINDOWS\_default.pif\patch.exe
  • %System Root%\patch.exe\patch.exe
  • %Windows%\.\patch.exe
  • %Windows%\..\patch.exe
  • %Windows%\$MSI31Uninstall_KB893803v2$\patch.exe
  • %Windows%\$NtUninstallWIC$\patch.exe
  • %Windows%\0.log\patch.exe
  • %Windows%\addins\patch.exe
  • %Windows%\AppPatch\patch.exe
  • %Windows%\assembly\patch.exe
  • %Windows%\Blue Lace 16.bmp\patch.exe
  • %Windows%\bootstat.dat\patch.exe
  • %Windows%\clock.avi\patch.exe
  • %Windows%\cmsetacl.log\patch.exe
  • %Windows%\Coffee Bean.bmp\patch.exe
  • %Windows%\comsetup.log\patch.exe
  • %Windows%\Config\patch.exe
  • %Windows%\Connection Wizard\patch.exe
  • %Windows%\control.ini\patch.exe
  • %Windows%\Cursors\patch.exe
  • %Windows%\Debug\patch.exe
  • %Windows%\desktop.ini\patch.exe
  • %Windows%\Downloaded Program Files\patch.exe
  • %Windows%\Driver Cache\patch.exe
  • %Windows%\DtcInstall.log\patch.exe
  • %Windows%\ehome\patch.exe
  • %Windows%\explorer.exe\patch.exe
  • %Windows%\explorer.scf\patch.exe
  • %Windows%\FaxSetup.log\patch.exe
  • %Windows%\FeatherTexture.bmp\patch.exe
  • %Windows%\Fonts\patch.exe
  • %Windows%\Gone Fishing.bmp\patch.exe
  • %Windows%\Greenstone.bmp\patch.exe
  • %Windows%\Help\patch.exe
  • %Windows%\hh.exe\patch.exe
  • %Windows%\iis6.log\patch.exe
  • %Windows%\ime\patch.exe
  • %Windows%\imsins.BAK\patch.exe
  • %Windows%\imsins.log\patch.exe
  • %Windows%\inf\patch.exe
  • %Windows%\Installer\patch.exe
  • %Windows%\java\patch.exe
  • %Windows%\KB893803v2.log\patch.exe
  • %Windows%\MedCtrOC.log\patch.exe
  • %Windows%\Media\patch.exe
  • %Windows%\Microsoft.NET\patch.exe
  • %Windows%\msagent\patch.exe
  • %Windows%\msapps\patch.exe
  • %Windows%\msdfmap.ini\patch.exe
  • %Windows%\msgsocm.log\patch.exe
  • %Windows%\msmqinst.log\patch.exe
  • %Windows%\mui\patch.exe
  • %Windows%\netfxocm.log\patch.exe
  • %Windows%\NOTEPAD.EXE\patch.exe
  • %Windows%\ntdtcsetup.log\patch.exe
  • %Windows%\ocgen.log\patch.exe
  • %Windows%\ocmsn.log\patch.exe
  • %Windows%\ODBCINST.INI\patch.exe
  • %Windows%\OEWABLog.txt\patch.exe
  • %Windows%\Offline Web Pages\patch.exe
  • %Windows%\patch.exe\patch.exe
  • %Windows%\pchealth\patch.exe
  • %Windows%\PeerNet\patch.exe
  • %Windows%\Prairie Wind.bmp\patch.exe
  • %Windows%\Prefetch\patch.exe
  • %Windows%\Provisioning\patch.exe
  • %Windows%\regedit.exe\patch.exe
  • %Windows%\Registration\patch.exe
  • %Windows%\REGLOCS.OLD\patch.exe
  • %Windows%\regopt.log\patch.exe
  • %Windows%\repair\patch.exe
  • %Windows%\Resources\patch.exe
  • %Windows%\Rhododendron.bmp\patch.exe
  • %Windows%\River Sumida.bmp\patch.exe
  • %Windows%\Santa Fe Stucco.bmp\patch.exe
  • %Windows%\SchedLgU.Txt\patch.exe
  • %Windows%\security\patch.exe
  • %Windows%\sessmgr.setup.log\patch.exe
  • %Windows%\SET3.tmp\patch.exe
  • %Windows%\SET4.tmp\patch.exe
  • %Windows%\SET8.tmp\patch.exe
  • %Windows%\setupact.log\patch.exe
  • %Windows%\setupapi.log\patch.exe
  • %Windows%\setuperr.log\patch.exe
  • %Windows%\setuplog.txt\patch.exe
  • %Windows%\Soap Bubbles.bmp\patch.exe
  • %Windows%\SoftwareDistribution\patch.exe
  • %Windows%\srchasst\patch.exe
  • %Windows%\Sti_Trace.log\patch.exe
  • %System%\patch.exe
  • %System%.ini\patch.exe
  • %Windows%\tabletoc.log\patch.exe
  • %Windows%\TASKMAN.EXE\patch.exe
  • %Windows%\Tasks\patch.exe
  • %Temp%\patch.exe
  • %Windows%\tsoc.log\patch.exe
  • %Windows%\twain.dll\patch.exe
  • %Windows%\twain_32\patch.exe
  • %Windows%\twain_32.dll\patch.exe
  • %Windows%\twunk_16.exe\patch.exe
  • %Windows%\twunk_32.exe\patch.exe
  • %Windows%\vb.ini\patch.exe
  • %Windows%\vbaddin.ini\patch.exe
  • %Windows%\vmmreg32.dll\patch.exe
  • %Windows%\Web\patch.exe
  • %Windows%\wiadebug.log\patch.exe
  • %Windows%\wiaservc.log\patch.exe
  • %Windows%\win.ini\patch.exe
  • %Windows%\WindowsShell.Manifest\patch.exe
  • %Windows%\WindowsUpdate.log\patch.exe
  • %Windows%\winhelp.exe\patch.exe
  • %Windows%\winhlp32.exe\patch.exe
  • %Windows%\winnt.bmp\patch.exe
  • %Windows%\winnt256.bmp\patch.exe
  • %Windows%\WinSxS\patch.exe
  • %Windows%\wmsetup.log\patch.exe
  • %Windows%\WMSysPr9.prx\patch.exe
  • %Windows%\Zapotec.bmp\patch.exe
  • %Windows%\_default.pif\patch.exe

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).. %Windows% is the Windows folder, which is usually C:\Windows.. %System% is the Windows system folder, which is usually C:\Windows\System32.. %Temp% is the Windows Temporary folder, which is usually C:\Windows\Temp.)

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine: 9.300

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Scan your computer with your Trend Micro product to delete files detected as WORM_DELF.GNR. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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