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PE_EXPIRO

February 04, 2014
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 REPORTED INFECTION:

  • Threat Type: File infector

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This file infector 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:

523,776 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

12 Oct 2013

Arrival Details

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

Other System Modifications

This file infector deletes the following files:

  • KERNEL32.dll
  • %Windows%\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch.1284.174406
  • %Windows%\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch.1284.174421
  • %User Profile%\v2.0.50727.42\security.config.cch.1284.174437

(Note: %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.)

It adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Conferencing\Mcpt

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\0
2103 = "0"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\1
2103 = "0"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\2
2103 = "0"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\3
2103 = "0"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\4
2103 = "0"

It modifies the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\0
1406 = "0"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\0
1609 = "0"

(Note: The default value data of the said registry entry is 1.)

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\1
1406 = "0"

(Note: The default value data of the said registry entry is 1.)

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\1
1609 = "0"

(Note: The default value data of the said registry entry is 1.)

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\2
1406 = "0"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\2
1609 = "0"

(Note: The default value data of the said registry entry is 1.)

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\3
1406 = "0"

(Note: The default value data of the said registry entry is 3.)

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\3
1609 = "0"

(Note: The default value data of the said registry entry is 1.)

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\4
1406 = "0"

(Note: The default value data of the said registry entry is 3.)

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\4
1609 = "0"

(Note: The default value data of the said registry entry is 1.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Tracing\
Microsoft\Imapi
LogSessionName = "stdout"

(Note: The default value data of the said registry entry is {random values}.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Tracing\
Microsoft\Imapi
Active = "1"

(Note: The default value data of the said registry entry is 1.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Tracing\
Microsoft\Imapi
ControlFlags = "1"

(Note: The default value data of the said registry entry is 1.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Tracing\
Microsoft\Imapi\ImapiSvc
Guid = "8107d8e9-e323-49f5-bba2-abc35c243dca"

(Note: The default value data of the said registry entry is 8107d8e9-e323-49f5-bba2-abc35c243dca.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Tracing\
Microsoft\Imapi\ImapiSvc
BitNames = "{random characters}"

(Note: The default value data of the said registry entry is ImapiDebugError ImapiDebugWarning ImapiDebugTrace ImapiDebugInfo ImapiDebugX ImapiDebugSort.)

Dropping Routine

This file infector drops the following files:

  • %Windows%\microsoft.net\framework\v4.0.30319\aspnet_state.vir
  • %System%\cisvc.vir
  • %System%\clipsrv.vir
  • %Windows%\microsoft.net\framework\v2.0.50727\mscorsvw.vir
  • %Windows%\microsoft.net\framework\v4.0.30319\mscorsvw.vir
  • %Windows%\microsoft.net\framework\v3.0\windows communication foundation\infocard.vir
  • %System%\imapi.vir
  • %System%\mnmsrvc.vir
  • %System%\netdde.vir
  • %Program Files%\winpcap\rpcapd.vir
  • %System%\scardsvr.vir
  • %System%\smlogsvc.vir
  • %System%\tlntsvr.vir
  • %System%\wbem\wmiapsrv.vir
  • %System%\magnify.vir
  • %System%\narrator.vir
  • %System%\osk.vir
  • %System%\utilman.vir
  • %Program Files%\Outlook Express\wab.vir
  • %System%\cmd.vir
  • %Program Files%\Windows Media Player\wmplayer.vir
  • %System%\mobsync.vir
  • %Program Files%\Outlook Express\msimn.vir
  • %Windows%\Microsoft.NET\Framework\v2.0.50727\ngen_service.lock
  • %Windows%\Microsoft.NET\Framework\v2.0.50727\ngenservicelock.dat
  • %System%\dmadmin.vir
  • %Windows%\Microsoft.NET\Framework\v4.0.30319\ngenservicelock.dat
  • %Windows%\Microsoft.NET\Framework\v4.0.30319\ngenrootstorelock.dat
  • %System%\msiexec.vir
  • %System%\sessmgr.vir
  • %System%\locator.vir
  • %System%\vssvc.vir
  • %Windows%\microsoft.net\framework\v4.0.30319\wpf\wpffontcache_v0400.vir
  • %User Profile%\{AC76BA86-7AD7-1033-7B44-AA0000000001}\setup.vir
  • %System%\accwiz.vir
  • %System%\calc.vir
  • %System%\mstsc.vir
  • %System%\sndrec32.vir
  • %System%\sndvol32.vir
  • %System%\mspaint.vir
  • %System%\ntbackup.vir
  • %System%\charmap.vir
  • %System%\cleanmgr.vir
  • %System%\usmt\migwiz.vir
  • %Program Files%\Common Files\Microsoft Shared\MSInfo\msinfo32.vir
  • %System%\Restore\rstrui.vir
  • %Program Files%\Windows NT\Accessories\wordpad.vir
  • %System%\odbcad32.vir
  • %System%\freecell.vir
  • %System%\mshearts.vir
  • %System%\winmine.vir
  • %System%\sol.vir
  • %System%\spider.vir
  • %Program Files%\MSN\MSNCoreFiles\Install\msnsusii.vir
  • %Program Files%\Movie Maker\moviemk.vir
  • %System%\wupdmgr.vir
  • %Program Files%\Adobe\Reader 10.0\Reader\AcroBroker.vir
  • %Program Files%\Adobe\Reader 10.0\Reader\AcroRd32.vir
  • %Program Files%\Adobe\Reader 10.0\Reader\AcroRd32Info.vir
  • %Program Files%\Adobe\Reader 10.0\Reader\AcroTextExtractor.vir
  • %Program Files%\Adobe\Reader 10.0\Reader\AdobeCollabSync.vir
  • %Program Files%\Adobe\Reader 10.0\Reader\Eula.vir
  • %Program Files%\Adobe\Reader 10.0\Reader\PDFPrevHndlrShim.vir
  • %Program Files%\Adobe\Reader 10.0\Reader\reader_sl.vir
  • %Program Files%\Common Files\Adobe\ARM\1.0\AcrobatUpdater.vir
  • %Program Files%\Common Files\Adobe\ARM\1.0\AdobeARM.vir
  • %Program Files%\Common Files\Adobe\ARM\1.0\ReaderUpdater.vir
  • %Program Files%\Common Files\Microsoft Shared\DW\DW20.vir
  • %Program Files%\Common Files\Microsoft Shared\DW\DWTRIG20.vir
  • %Program Files%\Common Files\Microsoft Shared\Speech\sapisvr.vir
  • %Program Files%\Internet Explorer\Connection Wizard\icwconn1.vir
  • %Program Files%\Internet Explorer\Connection Wizard\icwconn2.vir
  • %Program Files%\Internet Explorer\Connection Wizard\icwrmind.vir
  • %Program Files%\Internet Explorer\Connection Wizard\icwtutor.vir
  • %Program Files%\Internet Explorer\iedw.vir
  • %Program Files%\Messenger\msmsgs.vir
  • %Windows%\microsoft.net\framework\v4.0.30319\aspnet_state.exe
  • %System%\cisvc.exe
  • %System%\clipsrv.exe
  • %Windows%\microsoft.net\framework\v2.0.50727\mscorsvw.exe
  • %Windows%\microsoft.net\framework\v4.0.30319\mscorsvw.exe
  • %Windows%\microsoft.net\framework\v3.0\windows communication foundation\infocard.exe
  • %System%\imapi.exe
  • %System%\mnmsrvc.exe
  • %System%\netdde.exe
  • %Program Files%\winpcap\rpcapd.exe
  • %System%\scardsvr.exe
  • %System%\smlogsvc.exe
  • %System%\tlntsvr.exe
  • %System%\wbem\wmiapsrv.exe
  • %System%\magnify.exe
  • %System%\narrator.exe
  • %System%\osk.exe
  • %System%\utilman.exe
  • %Program Files%\Outlook Express\wab.exe
  • %System%\cmd.exe
  • %Program Files%\Windows Media Player\wmplayer.exe
  • %System%\mobsync.exe
  • %Program Files%\Outlook Express\msimn.exe
  • %System%\dmadmin.exe
  • %System%\msiexec.exe
  • %System%\sessmgr.exe
  • %System%\locator.exe
  • %System%\vssvc.exe
  • %Windows%\microsoft.net\framework\v4.0.30319\wpf\wpffontcache_v0400.exe
  • %User Profile%\{AC76BA86-7AD7-1033-7B44-AA0000000001}\setup.exe
  • %System%\accwiz.exe
  • %System%\calc.exe
  • %System%\mstsc.exe
  • %System%\sndrec32.exe
  • %System%\sndvol32.exe
  • %System%\mspaint.exe
  • %System%\ntbackup.exe
  • %System%\charmap.exe
  • %System%\cleanmgr.exe
  • %System%\usmt\migwiz.exe
  • %Program Files%\Common Files\Microsoft Shared\MSInfo\msinfo32.exe
  • %System%\Restore\rstrui.exe
  • %Program Files%\Windows NT\Accessories\wordpad.exe
  • %System%\odbcad32.exe
  • %System%\freecell.exe
  • %System%\mshearts.exe
  • %System%\winmine.exe
  • %System%\sol.exe
  • %System%\spider.exe
  • %Program Files%\MSN\MSNCoreFiles\Install\msnsusii.exe
  • %Program Files%\Movie Maker\moviemk.exe
  • %System%\wupdmgr.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\AcroBroker.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\AcroRd32.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\AcroRd32Info.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\AcroTextExtractor.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\AdobeCollabSync.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\Eula.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\PDFPrevHndlrShim.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\reader_sl.exe
  • %Program Files%\Common Files\Adobe\ARM\1.0\AcrobatUpdater.exe
  • %Program Files%\Common Files\Adobe\ARM\1.0\AdobeARM.exe
  • %Program Files%\Common Files\Adobe\ARM\1.0\ReaderUpdater.exe
  • %Program Files%\Common Files\Microsoft Shared\DW\DW20.EXE
  • %Program Files%\Common Files\Microsoft Shared\DW\DWTRIG20.EXE
  • %Program Files%\Common Files\Microsoft Shared\Speech\sapisvr.exe
  • %Program Files%\Internet Explorer\Connection Wizard\icwconn1.exe
  • %Program Files%\Internet Explorer\Connection Wizard\icwconn2.exe
  • %Program Files%\Internet Explorer\Connection Wizard\icwrmind.exe
  • %Program Files%\Internet Explorer\Connection Wizard\icwtutor.exe
  • %Program Files%\Internet Explorer\iedw.exe
  • %Program Files%\Messenger\msmsgs.exe

(Note: %Windows% is the Windows folder, which is usually C:\Windows.. %System% is the Windows system folder, which is usually C:\Windows\System32.. %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).. %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.)

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

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Conferencing
    • Mcpt

Step 3

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0
    • 2103 = "0"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1
    • 2103 = "0"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2
    • 2103 = "0"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3
    • 2103 = "0"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4
    • 2103 = "0"

Step 4

Restore these modified registry values

[ Learn More ]

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\Windows\CurrentVersion\Internet Settings\Zones\0
    • 1406 = "0"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0
    • From: 1609 = "0"
      To: 1609 = ""1""
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1
    • From: 1406 = "0"
      To: 1406 = ""1""
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1
    • From: 1609 = "0"
      To: 1609 = ""1""
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2
    • 1406 = "0"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2
    • From: 1609 = "0"
      To: 1609 = ""1""
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3
    • From: 1406 = "0"
      To: 1406 = ""3""
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3
    • From: 1609 = "0"
      To: 1609 = ""1""
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4
    • From: 1406 = "0"
      To: 1406 = ""3""
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4
    • From: 1609 = "0"
      To: 1609 = ""1""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\Imapi
    • From: LogSessionName = "stdout"
      To: LogSessionName = ""{random values}""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\Imapi
    • From: Active = "1"
      To: Active = ""1""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\Imapi
    • From: ControlFlags = "1"
      To: ControlFlags = ""1""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\Imapi\ImapiSvc
    • From: Guid = "8107d8e9-e323-49f5-bba2-abc35c243dca"
      To: Guid = ""8107d8e9-e323-49f5-bba2-abc35c243dca""
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\Imapi\ImapiSvc
    • From: BitNames = "{random characters}"
      To: BitNames = "" ImapiDebugError ImapiDebugWarning ImapiDebugTrace ImapiDebugInfo ImapiDebugX ImapiDebugSort""

Step 5

Search and delete these components

[ Learn More ]
There may be some components that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %Windows%\microsoft.net\framework\v4.0.30319\aspnet_state.vir
  • %System%\cisvc.vir
  • %System%\clipsrv.vir
  • %Windows%\microsoft.net\framework\v2.0.50727\mscorsvw.vir
  • %Windows%\microsoft.net\framework\v4.0.30319\mscorsvw.vir
  • %Windows%\microsoft.net\framework\v3.0\windows communication foundation\infocard.vir
  • %System%\imapi.vir
  • %System%\mnmsrvc.vir
  • %System%\netdde.vir
  • %Program Files%\winpcap\rpcapd.vir
  • %System%\scardsvr.vir
  • %System%\smlogsvc.vir
  • %System%\tlntsvr.vir
  • %System%\wbem\wmiapsrv.vir
  • %System%\magnify.vir
  • %System%\narrator.vir
  • %System%\osk.vir
  • %System%\utilman.vir
  • %Program Files%\Outlook Express\wab.vir
  • %System%\cmd.vir
  • %Program Files%\Windows Media Player\wmplayer.vir
  • %System%\mobsync.vir
  • %Program Files%\Outlook Express\msimn.vir
  • %Windows%\Microsoft.NET\Framework\v2.0.50727\ngen_service.lock
  • %Windows%\Microsoft.NET\Framework\v2.0.50727\ngenservicelock.dat
  • %System%\dmadmin.vir
  • %Windows%\Microsoft.NET\Framework\v4.0.30319\ngenservicelock.dat
  • %Windows%\Microsoft.NET\Framework\v4.0.30319\ngenrootstorelock.dat
  • %System%\msiexec.vir
  • %System%\sessmgr.vir
  • %System%\locator.vir
  • %System%\vssvc.vir
  • %Windows%\microsoft.net\framework\v4.0.30319\wpf\wpffontcache_v0400.vir
  • %User Profile%\{AC76BA86-7AD7-1033-7B44-AA0000000001}\setup.vir
  • %System%\accwiz.vir
  • %System%\calc.vir
  • %System%\mstsc.vir
  • %System%\sndrec32.vir
  • %System%\sndvol32.vir
  • %System%\mspaint.vir
  • %System%\ntbackup.vir
  • %System%\charmap.vir
  • %System%\cleanmgr.vir
  • %System%\usmt\migwiz.vir
  • %Program Files%\Common Files\Microsoft Shared\MSInfo\msinfo32.vir
  • %System%\Restore\rstrui.vir
  • %Program Files%\Windows NT\Accessories\wordpad.vir
  • %System%\odbcad32.vir
  • %System%\freecell.vir
  • %System%\mshearts.vir
  • %System%\winmine.vir
  • %System%\sol.vir
  • %System%\spider.vir
  • %Program Files%\MSN\MSNCoreFiles\Install\msnsusii.vir
  • %Program Files%\Movie Maker\moviemk.vir
  • %System%\wupdmgr.vir
  • %Program Files%\Adobe\Reader 10.0\Reader\AcroBroker.vir
  • %Program Files%\Adobe\Reader 10.0\Reader\AcroRd32.vir
  • %Program Files%\Adobe\Reader 10.0\Reader\AcroRd32Info.vir
  • %Program Files%\Adobe\Reader 10.0\Reader\AcroTextExtractor.vir
  • %Program Files%\Adobe\Reader 10.0\Reader\AdobeCollabSync.vir
  • %Program Files%\Adobe\Reader 10.0\Reader\Eula.vir
  • %Program Files%\Adobe\Reader 10.0\Reader\PDFPrevHndlrShim.vir
  • %Program Files%\Adobe\Reader 10.0\Reader\reader_sl.vir
  • %Program Files%\Common Files\Adobe\ARM\1.0\AcrobatUpdater.vir
  • %Program Files%\Common Files\Adobe\ARM\1.0\AdobeARM.vir
  • %Program Files%\Common Files\Adobe\ARM\1.0\ReaderUpdater.vir
  • %Program Files%\Common Files\Microsoft Shared\DW\DW20.vir
  • %Program Files%\Common Files\Microsoft Shared\DW\DWTRIG20.vir
  • %Program Files%\Common Files\Microsoft Shared\Speech\sapisvr.vir
  • %Program Files%\Internet Explorer\Connection Wizard\icwconn1.vir
  • %Program Files%\Internet Explorer\Connection Wizard\icwconn2.vir
  • %Program Files%\Internet Explorer\Connection Wizard\icwrmind.vir
  • %Program Files%\Internet Explorer\Connection Wizard\icwtutor.vir
  • %Program Files%\Internet Explorer\iedw.vir
  • %Program Files%\Messenger\msmsgs.vir
  • %Windows%\microsoft.net\framework\v4.0.30319\aspnet_state.exe
  • %System%\cisvc.exe
  • %System%\clipsrv.exe
  • %Windows%\microsoft.net\framework\v2.0.50727\mscorsvw.exe
  • %Windows%\microsoft.net\framework\v4.0.30319\mscorsvw.exe
  • %Windows%\microsoft.net\framework\v3.0\windows communication foundation\infocard.exe
  • %System%\imapi.exe
  • %System%\mnmsrvc.exe
  • %System%\netdde.exe
  • %Program Files%\winpcap\rpcapd.exe
  • %System%\scardsvr.exe
  • %System%\smlogsvc.exe
  • %System%\tlntsvr.exe
  • %System%\wbem\wmiapsrv.exe
  • %System%\magnify.exe
  • %System%\narrator.exe
  • %System%\osk.exe
  • %System%\utilman.exe
  • %Program Files%\Outlook Express\wab.exe
  • %System%\cmd.exe
  • %Program Files%\Windows Media Player\wmplayer.exe
  • %System%\mobsync.exe
  • %Program Files%\Outlook Express\msimn.exe
  • %System%\dmadmin.exe
  • %System%\msiexec.exe
  • %System%\sessmgr.exe
  • %System%\locator.exe
  • %System%\vssvc.exe
  • %Windows%\microsoft.net\framework\v4.0.30319\wpf\wpffontcache_v0400.exe
  • %User Profile%\{AC76BA86-7AD7-1033-7B44-AA0000000001}\setup.exe
  • %System%\accwiz.exe
  • %System%\calc.exe
  • %System%\mstsc.exe
  • %System%\sndrec32.exe
  • %System%\sndvol32.exe
  • %System%\mspaint.exe
  • %System%\ntbackup.exe
  • %System%\charmap.exe
  • %System%\cleanmgr.exe
  • %System%\usmt\migwiz.exe
  • %Program Files%\Common Files\Microsoft Shared\MSInfo\msinfo32.exe
  • %System%\Restore\rstrui.exe
  • %Program Files%\Windows NT\Accessories\wordpad.exe
  • %System%\odbcad32.exe
  • %System%\freecell.exe
  • %System%\mshearts.exe
  • %System%\winmine.exe
  • %System%\sol.exe
  • %System%\spider.exe
  • %Program Files%\MSN\MSNCoreFiles\Install\msnsusii.exe
  • %Program Files%\Movie Maker\moviemk.exe
  • %System%\wupdmgr.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\AcroBroker.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\AcroRd32.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\AcroRd32Info.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\AcroTextExtractor.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\AdobeCollabSync.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\Eula.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\PDFPrevHndlrShim.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\reader_sl.exe
  • %Program Files%\Common Files\Adobe\ARM\1.0\AcrobatUpdater.exe
  • %Program Files%\Common Files\Adobe\ARM\1.0\AdobeARM.exe
  • %Program Files%\Common Files\Adobe\ARM\1.0\ReaderUpdater.exe
  • %Program Files%\Common Files\Microsoft Shared\DW\DW20.EXE
  • %Program Files%\Common Files\Microsoft Shared\DW\DWTRIG20.EXE
  • %Program Files%\Common Files\Microsoft Shared\Speech\sapisvr.exe
  • %Program Files%\Internet Explorer\Connection Wizard\icwconn1.exe
  • %Program Files%\Internet Explorer\Connection Wizard\icwconn2.exe
  • %Program Files%\Internet Explorer\Connection Wizard\icwrmind.exe
  • %Program Files%\Internet Explorer\Connection Wizard\icwtutor.exe
  • %Program Files%\Internet Explorer\iedw.exe
  • %Program Files%\Messenger\msmsgs.exe

Step 6

Scan your computer with your Trend Micro product to clean files detected as PE_EXPIRO. 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 7

Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.

  • KERNEL32.dll
  • %Windows%\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch.1284.174406
  • %Windows%\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch.1284.174421
  • %User Profile%\v2.0.50727.42\security.config.cch.1284.174437


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