WORM_SILLY.ZCW
Worm:MSIL/Autosipoc.A (Microsoft); MSIL/AutoCopies (McAfee); W32.SillyFDC (Symantec); Worm.MSIL.Agent.ck (Kaspersky); Trojan.Win32.Generic.pak!cobra (Sunbelt); Worm/Generic2.ARJK (AVG)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
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
3,403,264 bytes
EXE
No
08 Sep 2014
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:
- %System Root%\Documents and Settings\Documents and Settings.exe
- %Program Files%\Program Files.exe
- %Windows%\WINDOWS.exe
- %User Profile%\My Documents\My Music.exe
- %User Profile%\My Documents\My Pictures.exe
- %User Profile%\All Users.exe
- %User Profile%\Default User.exe
- %User Profile%\LocalService.exe
- %User Profile%\NetworkService.exe
- %User Profile%\Wilbert.exe
- %Program Files%\Adobe\Adobe.exe
- %Program Files%\Common Files\Common Files.exe
- %Program Files%\ComPlus Applications\ComPlus Applications.exe
- %Program Files%\Internet Explorer\Internet Explorer.exe
- %Program Files%\Messenger\Messenger.exe
- %Program Files%\microsoft frontpage\microsoft frontpage.exe
- %Program Files%\Microsoft.NET\Microsoft.NET.exe
- %Program Files%\Movie Maker\Movie Maker.exe
- %Program Files%\MSBuild\MSBuild.exe
- %Program Files%\MSN\MSN.exe
- %Program Files%\MSN Gaming Zone\MSN Gaming Zone.exe
- %Program Files%\MSXML 6.0\MSXML 6.0.exe
- %Program Files%\NetMeeting\NetMeeting.exe
- %Program Files%\Online Services\Online Services.exe
- %Program Files%\Outlook Express\Outlook Express.exe
- %Program Files%\Reference Assemblies\Reference Assemblies.exe
- %Program Files%\Uninstall Information\Uninstall Information.exe
- %Program Files%\Windows Media Player\Windows Media Player.exe
- %Program Files%\Windows NT\Windows NT.exe
- %Program Files%\WindowsUpdate\WindowsUpdate.exe
- %Program Files%\WinPcap\WinPcap.exe
- %Program Files%\xerox\xerox.exe
- %Windows%\$MSI31Uninstall_KB893803v2$\$MSI31Uninstall_KB893803v2$.exe
- %Windows%\$NtUninstallWIC$\$NtUninstallWIC$.exe
- %Windows%\addins\addins.exe
- %Windows%\AppPatch\AppPatch.exe
- %Windows%\assembly\assembly.exe
- %Windows%\Config\Config.exe
- %Windows%\Connection Wizard\Connection Wizard.exe
- %Windows%\Cursors\Cursors.exe
- %Windows%\Debug\Debug.exe
- %Windows%\Downloaded Program Files\Downloaded Program Files.exe
- %Windows%\Driver Cache\Driver Cache.exe
- %Windows%\ehome\ehome.exe
- %Windows%\Fonts\Fonts.exe
- %Windows%\Help\Help.exe
- %Windows%\ime\ime.exe
- %Windows%\inf\inf.exe
- %Windows%\Installer\Installer.exe
- %Windows%\java\java.exe
- %Windows%\Media\Media.exe
- %Windows%\Microsoft.NET\Microsoft.NET.exe
- %Windows%\msagent\msagent.exe
- %Windows%\msapps\msapps.exe
- %Windows%\mui\mui.exe
- %Windows%\Offline Web Pages\Offline Web Pages.exe
- %Windows%\pchealth\pchealth.exe
- %Windows%\PeerNet\PeerNet.exe
- %Windows%\Prefetch\Prefetch.exe
- %Windows%\Provisioning\Provisioning.exe
- %Windows%\Registration\Registration.exe
- %Windows%\repair\repair.exe
- %Windows%\Resources\Resources.exe
- %Windows%\security\security.exe
- %Windows%\SoftwareDistribution\SoftwareDistribution.exe
- %Windows%\srchasst\srchasst.exe
- %System%\system.exe
- %System%\system32.exe
- %Windows%\Tasks\Tasks.exe
- %Temp%\Temp.exe
- %Windows%\twain_32\twain_32.exe
- %Windows%\Web\Web.exe
- %Windows%\WinSxS\WinSxS.exe
- %User Profile%\My Music\Imagenes2.exe
- %User Profile%\My Pictures\Imagenes2.exe
- %Start Menu%\Programs\Imagenes2.exe
- %User Profile%\Application Data\Application Data.exe
- %Desktop%\Desktop.exe
- %User Profile%\Documents\Documents.exe
- %User Profile%\DRM\DRM.exe
- %Favorites%\Favorites.exe
- %Start Menu%\Start Menu.exe
- %User Profile%\Templates\Templates.exe
- %User Profile%\Cookies\Cookies.exe
- %User Profile%\Local Settings\Local Settings.exe
- %User Profile%\My Documents\My Documents.exe
- %User Profile%\NetHood\NetHood.exe
- %User Profile%\PrintHood\PrintHood.exe
- %User Profile%\Recent\Recent.exe
- %User Profile%\SendTo\SendTo.exe
- %Program Files%\Adobe\Reader 10.0\Reader 10.0.exe
- %Program Files%\Common Files\Adobe\Adobe.exe
- %Program Files%\Common Files\Microsoft Shared\Microsoft Shared.exe
- %Program Files%\Common Files\MSSoap\MSSoap.exe
- %Program Files%\Common Files\ODBC\ODBC.exe
- %Program Files%\Common Files\Services\Services.exe
- %Program Files%\Common Files\SpeechEngines\SpeechEngines.exe
- %Program Files%\Common Files\System\System.exe
- %Program Files%\Internet Explorer\Connection Wizard\Connection Wizard.exe
- %Program Files%\Internet Explorer\MUI\MUI.exe
- %Program Files%\Internet Explorer\PLUGINS\PLUGINS.exe
- %Program Files%\Internet Explorer\SIGNUP\SIGNUP.exe
- %Program Files%\microsoft frontpage\version3.0\version3.0.exe
- %Program Files%\Microsoft.NET\RedistList\RedistList.exe
- %Program Files%\Movie Maker\MUI\MUI.exe
- %Program Files%\Movie Maker\Shared\Shared.exe
- %Program Files%\MSBuild\Microsoft\Microsoft.exe
- %Program Files%\MSN\MSNCoreFiles\MSNCoreFiles.exe
- %Program Files%\MSN Gaming Zone\Windows Gaming Zone\Windows.exe
- %Program Files%\MSXML 6.0\EULA\EULA.exe
- %Program Files%\Reference Assemblies\Microsoft\Microsoft.exe
- %Program Files%\Windows Media Player\Icons\Icons.exe
- %Program Files%\Windows Media Player\Sample Playlists\Sample Playlists.exe
- %Program Files%\Windows Media Player\Skins\Skins.exe
- %Program Files%\Windows Media Player\Visualizations\Visualizations.exe
- %Program Files%\Windows NT\Accessories\Accessories.exe
- %Program Files%\Windows NT\Pinball\Pinball.exe
- %Program Files%\xerox\nwwia\nwwia.exe
- %Windows%\$MSI31Uninstall_KB893803v2$\spuninst\spuninst.exe
- %Windows%\$NtUninstallWIC$\spuninst\spuninst.exe
- %Windows%\assembly\GAC_32\GAC_32.exe
- %Windows%\assembly\GAC_MSIL\GAC_MSIL.exe
- %Windows%\assembly\NativeImages_v2.0.50727_32\NativeImages_v2.0.50727_32.exe
- %Windows%\assembly\NativeImages_v4.0.30319_32\NativeImages_v4.0.30319_32.exe
- %Windows%\assembly\temp\temp.exe
- %Windows%\assembly\tmp\tmp.exe
- %Windows%\Debug\UserMode\UserMode.exe
- %Windows%\Driver Cache\i386\i386.exe
- %Windows%\Help\Tours\Tours.exe
- %Windows%\ime\chsime\chsime.exe
- %Windows%\ime\CHTIME\CHTIME.exe
- %Windows%\ime\imejp\imejp.exe
- %Windows%\ime\imejp98\imejp98.exe
- %Windows%\ime\imjp8_1\imjp8_1.exe
- %Windows%\ime\imkr6_1\imkr6_1.exe
- %Windows%\ime\shared\shared.exe
- %Windows%\Installer\$PatchCache$\$PatchCache$.exe
- %Windows%\Installer\{0A869A65-8C94-4F7C-A5C7-972D3C8CED9E}\{0A869A65-8C94-4F7C-A5C7-972D3C8CED9E}.exe
- %Windows%\Installer\{350C97B0-3D7C-4EE8-BAA9-00BCB3D54227}\{350C97B0-3D7C-4EE8-BAA9-00BCB3D54227}.exe
- %Windows%\Installer\{835818DD-220C-4ABD-946E-0D8660B95E29}\{835818DD-220C-4ABD-946E-0D8660B95E29}.exe
- %Windows%\Installer\{AC76BA86-7AD7-1033-7B44-AA0000000001}\{AC76BA86-7AD7-1033-7B44-AA0000000001}.exe
- %Windows%\java\classes\classes.exe
- %Windows%\java\trustlib\trustlib.exe
- %Windows%\Microsoft.NET\assembly\assembly.exe
- %Windows%\Microsoft.NET\Framework\Framework.exe
- %Windows%\msagent\chars\chars.exe
- %Windows%\msagent\intl\intl.exe
- %Windows%\msapps\msinfo\msinfo.exe
- %Windows%\pchealth\ERRORREP\ERRORREP.exe
- %Windows%\pchealth\helpctr\helpctr.exe
- %Windows%\pchealth\UploadLB\UploadLB.exe
- %Windows%\Provisioning\Schemas\Schemas.exe
- %Windows%\Registration\CRMLog\CRMLog.exe
- %Windows%\Resources\Themes\Themes.exe
- %Windows%\security\Database\Database.exe
- %Windows%\security\logs\logs.exe
- %Windows%\security\templates\templates.exe
- %Windows%\SoftwareDistribution\DataStore\DataStore.exe
- %Windows%\SoftwareDistribution\Download\Download.exe
- %Windows%\SoftwareDistribution\EventCache\EventCache.exe
- %Windows%\SoftwareDistribution\SelfUpdate\SelfUpdate.exe
- %Windows%\srchasst\chars\chars.exe
- %Windows%\srchasst\mui\mui.exe
- %System%\102532\1025.exe
- %System%\102832\1028.exe
- %System%\103132\1031.exe
- %System%\103332\1033.exe
- %System%\103732\1037.exe
- %System%\104132\1041.exe
- %System%\104232\1042.exe
- %System%\105432\1054.exe
- %System%\205232\2052.exe
- %System%\307632\3076.exe
- %System%\3com_dmi32\3com_dmi.exe
- %System%\CatRoot32\CatRoot.exe
- %System%\CatRoot232\CatRoot2.exe
- %System%\Com32\Com.exe
- %System%\config32\config.exe
- %System%\dhcp32\dhcp.exe
- %System%\DirectX32\DirectX.exe
- %System%\dllcache32\dllcache.exe
- %System%\drivers32\drivers.exe
- %System%\en-us32\en-us.exe
- %System%\export32\export.exe
- %System%\GroupPolicy32\GroupPolicy.exe
- %System%\ias32\ias.exe
- %System%\icsxml32\icsxml.exe
- %System%\IME32\IME.exe
- %System%\inetsrv32\inetsrv.exe
- %System%\Macromed32\Macromed.exe
- %System%\Microsoft32\Microsoft.exe
- %System%\MsDtc32\MsDtc.exe
- %System%\mui32\mui.exe
- %System%\npp32\npp.exe
- %System%\oobe32\oobe.exe
- %System%\ras32\ras.exe
- %System%\ReinstallBackups32\ReinstallBackups.exe
- %System%\Restore32\Restore.exe
- %System%\Setup32\Setup.exe
- %System%\ShellExt32\ShellExt.exe
- %System%\spool32\spool.exe
- %System%\usmt32\usmt.exe
- %System%\wbem32\wbem.exe
- %System%\wins32\wins.exe
- %System%\xircom32\xircom.exe
- %System%\XPSViewer32\XPSViewer.exe
- %Windows%\Web\printers\printers.exe
- %Windows%\Web\Wallpaper\Wallpaper.exe
- %Windows%\WinSxS\InstallTemp\InstallTemp.exe
- %Windows%\WinSxS\Manifests\Manifests.exe
- %Windows%\WinSxS\MSIL_IEExecRemote_b03f5f7f11d50a3a_2.0.0.0_x-ww_6e57c34e\MSIL_IEExecRemote_b03f5f7f11d50a3a_2.0.0.0_x-ww_6e57c34e.exe
- %Windows%\WinSxS\MSIL_Microsoft.Workflow.Compiler_31bf3856ad364e35_4.0.0.0_x-ww_97359ba5\MSIL_Microsoft.Workflow.Compiler_31bf3856ad364e35_4.0.0.0_x-ww_97359ba5.exe
- %Windows%\WinSxS\Policies\Policies.exe
- %Windows%\WinSxS\x86_Microsoft.Tools.VisualCPlusPlus.Runtime-Libraries_6595b64144ccf1df_6.0.0.0_x-ww_ff9986d7\x86_Microsoft.Tools.VisualCPlusPlus.Runtime-Libraries_6595b64144ccf1df_6.0.0.0_x-ww_ff9986d7.exe
- %Windows%\WinSxS\x86_Microsoft.VC80.CRT_1fc8b3b9a1e18e3b_8.0.50727.1433_x-ww_5cf844d2\x86_Microsoft.VC80.CRT_1fc8b3b9a1e18e3b_8.0.50727.1433_x-ww_5cf844d2.exe
- %Windows%\WinSxS\x86_Microsoft.VC80.CRT_1fc8b3b9a1e18e3b_8.0.50727.42_x-ww_0de06acd\x86_Microsoft.VC80.CRT_1fc8b3b9a1e18e3b_8.0.50727.42_x-ww_0de06acd.exe
- %Windows%\WinSxS\x86_Microsoft.VC80.MFC_1fc8b3b9a1e18e3b_8.0.50727.762_x-ww_3bf8fa05\x86_Microsoft.VC80.MFC_1fc8b3b9a1e18e3b_8.0.50727.762_x-ww_3bf8fa05.exe
- %Windows%\WinSxS\x86_Microsoft.VC90.ATL_1fc8b3b9a1e18e3b_9.0.30729.1_x-ww_d01483b2\x86_Microsoft.VC90.ATL_1fc8b3b9a1e18e3b_9.0.30729.1_x-ww_d01483b2.exe
- %Windows%\WinSxS\x86_Microsoft.VC90.ATL_1fc8b3b9a1e18e3b_9.0.30729.4148_x-ww_353599c2\x86_Microsoft.VC90.ATL_1fc8b3b9a1e18e3b_9.0.30729.4148_x-ww_353599c2.exe
- %Windows%\WinSxS\x86_Microsoft.VC90.CRT_1fc8b3b9a1e18e3b_9.0.21022.8_x-ww_d08d0375\x86_Microsoft.VC90.CRT_1fc8b3b9a1e18e3b_9.0.21022.8_x-ww_d08d0375.exe
- %Windows%\WinSxS\x86_Microsoft.VC90.CRT_1fc8b3b9a1e18e3b_9.0.30729.1_x-ww_6f74963e\x86_Microsoft.VC90.CRT_1fc8b3b9a1e18e3b_9.0.30729.1_x-ww_6f74963e.exe
- %Windows%\WinSxS\x86_Microsoft.VC90.CRT_1fc8b3b9a1e18e3b_9.0.30729.4148_x-ww_d495ac4e\x86_Microsoft.VC90.CRT_1fc8b3b9a1e18e3b_9.0.30729.4148_x-ww_d495ac4e.exe
- %Windows%\WinSxS\x86_Microsoft.VC90.MFCLOC_1fc8b3b9a1e18e3b_9.0.30729.1_x-ww_b0db7d03\x86_Microsoft.VC90.MFCLOC_1fc8b3b9a1e18e3b_9.0.30729.1_x-ww_b0db7d03.exe
- %Windows%\WinSxS\x86_Microsoft.VC90.MFCLOC_1fc8b3b9a1e18e3b_9.0.30729.4148_x-ww_15fc9313\x86_Microsoft.VC90.MFCLOC_1fc8b3b9a1e18e3b_9.0.30729.4148_x-ww_15fc9313.exe
- %Windows%\WinSxS\x86_Microsoft.VC90.MFC_1fc8b3b9a1e18e3b_9.0.30729.1_x-ww_405b0943\x86_Microsoft.VC90.MFC_1fc8b3b9a1e18e3b_9.0.30729.1_x-ww_405b0943.exe
- %Windows%\WinSxS\x86_Microsoft.VC90.MFC_1fc8b3b9a1e18e3b_9.0.30729.4148_x-ww_a57c1f53\x86_Microsoft.VC90.MFC_1fc8b3b9a1e18e3b_9.0.30729.4148_x-ww_a57c1f53.exe
- %Windows%\WinSxS\x86_Microsoft.VC90.OpenMP_1fc8b3b9a1e18e3b_9.0.21022.8_x-ww_ecc42bd1\x86_Microsoft.VC90.OpenMP_1fc8b3b9a1e18e3b_9.0.21022.8_x-ww_ecc42bd1.exe
- %Windows%\WinSxS\x86_Microsoft.VC90.OpenMP_1fc8b3b9a1e18e3b_9.0.30729.4148_x-ww_f0ccd4aa\x86_Microsoft.VC90.OpenMP_1fc8b3b9a1e18e3b_9.0.30729.4148_x-ww_f0ccd4aa.exe
- %Windows%\WinSxS\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.0.0_x-ww_1382d70a\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.0.0_x-ww_1382d70a.exe
- %Windows%\WinSxS\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.2180_x-ww_a84f1ff9\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.2180_x-ww_a84f1ff9.exe
- %Windows%\WinSxS\x86_Microsoft.Windows.CPlusPlusRuntime_6595b64144ccf1df_7.0.0.0_x-ww_2726e76a\x86_Microsoft.Windows.CPlusPlusRuntime_6595b64144ccf1df_7.0.0.0_x-ww_2726e76a.exe
- %Windows%\WinSxS\x86_Microsoft.Windows.CPlusPlusRuntime_6595b64144ccf1df_7.0.2600.2180_x-ww_b2505ed9\x86_Microsoft.Windows.CPlusPlusRuntime_6595b64144ccf1df_7.0.2600.2180_x-ww_b2505ed9.exe
- %Windows%\WinSxS\x86_Microsoft.Windows.GdiPlus_6595b64144ccf1df_1.0.0.0_x-ww_8d353f13\x86_Microsoft.Windows.GdiPlus_6595b64144ccf1df_1.0.0.0_x-ww_8d353f13.exe
- %Windows%\WinSxS\x86_Microsoft.Windows.GdiPlus_6595b64144ccf1df_1.0.2600.2180_x-ww_522f9f82\x86_Microsoft.Windows.GdiPlus_6595b64144ccf1df_1.0.2600.2180_x-ww_522f9f82.exe
- %Windows%\WinSxS\x86_Microsoft.Windows.Networking.Dxmrtp_6595b64144ccf1df_5.2.2.3_x-ww_468466a7\x86_Microsoft.Windows.Networking.Dxmrtp_6595b64144ccf1df_5.2.2.3_x-ww_468466a7.exe
- %Windows%\WinSxS\x86_Microsoft.Windows.Networking.RtcDll_6595b64144ccf1df_5.2.2.3_x-ww_d6bd8b95\x86_Microsoft.Windows.Networking.RtcDll_6595b64144ccf1df_5.2.2.3_x-ww_d6bd8b95.exe
- %Windows%\WinSxS\x86_Microsoft.Windows.Networking.RtcRes_6595b64144ccf1df_5.2.2.3_en_16a24bc0\x86_Microsoft.Windows.Networking.RtcRes_6595b64144ccf1df_5.2.2.3_en_16a24bc0.exe
- %Windows%\WinSxS\x86_System.EnterpriseServices_b03f5f7f11d50a3a_2.0.0.0_x-ww_7d5f3790\x86_System.EnterpriseServices_b03f5f7f11d50a3a_2.0.0.0_x-ww_7d5f3790.exe
- %Windows%\WinSxS\x86_System.EnterpriseServices_b03f5f7f11d50a3a_4.0.0.0_x-ww_29b51492\x86_System.EnterpriseServices_b03f5f7f11d50a3a_4.0.0.0_x-ww_29b51492.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.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %System% is the Windows system folder, which is usually C:\Windows\System32.. %Temp% is the Windows Temporary folder, which is usually C:\Windows\Temp.. %Start Menu% is the current user's Start Menu folder, which is usually C:\Windows\Start Menu or C:\Documents and Settings\{User name}\Start Menu on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista and 7.. %Desktop% is the current user's desktop, which is usually C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\Desktop on Windows Vista and 7.. %Favorites% is the current user's Favorites folder, which is usually C:\Documents and Settings\{user name}\Favorites on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\Favorites on Windows Vista and 7.)
Other System Modifications
This worm modifies the following file(s):
- %Application Data%\GDIPFONTCACHEV1.DAT
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)
It modifies the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
GDIPlus
FontCachePath = "%Application Data%"
(Note: The default value data of the said registry entry is %User Profile%\Local Settings\Application Data.)
Other Details
This worm connects to the following possibly malicious URL:
- {BLOCKED}4.68.108
This report is generated via an automated analysis system.
SOLUTION
9.700
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
Restore these modified registry values
Important:Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator's help. You may also check out this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\Software\Microsoft\GDIPlus
- From: FontCachePath = "%Application Data%"
To: FontCachePath = ""%User Profile%\Local Settings\Application Data""
- From: FontCachePath = "%Application Data%"
Step 3
Scan your computer with your Trend Micro product to delete files detected as WORM_SILLY.ZCW. 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.
Step 4
Restore deleted/modified files and/or registry entries from backup
*Note: Only Microsoft-related files/keys/values will be restored. If this malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.
- %Application Data%\GDIPFONTCACHEV1.DAT
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