TROJ_VIRANTIX.AF

November 22, 2012

ALIASES:

Error scanning (unpack:(UPC):13), TrojanDownloader:Win32/Renos (Microsoft); Generic FakeAlert.d (McAfee); Backdoor.Tidserv (Symantec); Backdoor.Win32.UltimateDefender.gen (Kaspersky); BehavesLike.Win32.Malware.bph (mx-v) (Sunbelt); Trojan.Crypt.EQ (FSecure)

PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

OVERALL RISK RATING:

DAMAGE POTENTIAL:

DISTRIBUTION POTENTIAL:

REPORTED INFECTION:

Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes

OVERVIEW

This Trojan 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: 9,216 bytes

File Type: EXE

Memory Resident: No

Initial Samples Received Date: 22 Nov 2012

Arrival Details

This Trojan 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 Trojan adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\0
1208 = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\0
2500 = "3"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\1
1208 = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\1
2500 = "3"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\2
1208 = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\2
2500 = "3"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\3
1208 = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\3
2500 = "3"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\4
1208 = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\4
2500 = "3"

HKEY_CURRENT_USER\Software\Microsoft\
Security Center
AntiVirusDisableNotify = "1"

HKEY_CURRENT_USER\Software\Microsoft\
Security Center
FirewallDisableNotify = "1"

HKEY_CURRENT_USER\Software\Microsoft\
Security Center
UpdatesDisableNotify = "1"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile
EnableFirewall = "0"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Enable Browser Extensions = "yes"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Search Bar = "http://www.{BLOCKED}e.com/ie"

It modifies the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\0
1200 = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\0
1201 = "0"

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\0
1608 = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\0
1804 = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\1
1200 = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\1
1201 = "0"

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\1
1608 = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\1
1804 = "1"

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\2
1200 = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\2
1201 = "0"

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\2
1608 = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\2
1804 = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\3
1200 = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\3
1201 = "0"

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\3
1608 = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\3
1804 = "1"

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\4
1200 = "0"

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\4
1201 = "0"

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\4
1608 = "0"

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\4
1804 = "1"

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

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center
AntiVirusDisableNotify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center
FirewallDisableNotify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center
UpdatesDisableNotify = "1"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Search Page = "http://www.{BLOCKED}e.com"

(Note: The default value data of the said registry entry is http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch.)

HKEY_CURRENT_USER\Software\Microsoft\
Internet Explorer\Main
Start Page = "http://www.{BLOCKED}e.com"

(Note: The default value data of the said registry entry is http://www.microsoft.com/isapi/redir.dll?prd=ie&pver=6&ar=msnhome.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Main
Default_Search_URL = "http://www.{BLOCKED}e.com/ie"

(Note: The default value data of the said registry entry is http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Main
Search Page = "http://www.{BLOCKED}e.com"

(Note: The default value data of the said registry entry is http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Main
Start Page = "http://www.{BLOCKED}e.com"

(Note: The default value data of the said registry entry is http://www.microsoft.com/isapi/redir.dll?prd={SUB_PRD}&clcid={SUB_CLSID}&pver={SUB_PVER}&ar=home.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Internet Explorer\Search
SearchAssistant = "http://www.{BLOCKED}e.com"

(Note: The default value data of the said registry entry is http://ie.search.msn.com/{SUB_RFC1766}/srchasst/srchasst.htm.)

It deletes the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{18DF081C-E8AD-4283-A596-FA578C2EBDC3}

Other Details

This Trojan connects to the following possibly malicious URL:

http://{BLOCKED}quick-scan.com/?wmid=1019&l=12&it=2&s=25
http://{BLOCKED}yware-quick-scan.com/?wmid=1019&l=12&it=2&s=25
http://{BLOCKED}e-quickscan-2008.com/?wmid=1019&l=12&it=2&s=25
http://{BLOCKED}quickscan-2008.com/?wmid=1019&l=12&it=2&s=25
http://{BLOCKED}e-quickscan-2009.com/?wmid=1019&l=12&it=2&s=25
http://{BLOCKED}quickscan-2009.com/?wmid=1019&l=12&it=2&s=25
http://{BLOCKED}rus-quick-scan.com/?wmid=1019&l=12&it=2&s=25

This report is generated via an automated analysis system.

SOLUTION

Minimum Scan Engine: 9.300

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

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_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0
- 1208 = "0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0
- 2500 = "3"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1
- 1208 = "0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1
- 2500 = "3"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2
- 1208 = "0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2
- 2500 = "3"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3
- 1208 = "0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3
- 2500 = "3"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4
- 1208 = "0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4
- 2500 = "3"

In HKEY_CURRENT_USER\Software\Microsoft\Security Center
- AntiVirusDisableNotify = "1"

In HKEY_CURRENT_USER\Software\Microsoft\Security Center
- FirewallDisableNotify = "1"

In HKEY_CURRENT_USER\Software\Microsoft\Security Center
- UpdatesDisableNotify = "1"

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile
- EnableFirewall = "0"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
- Enable Browser Extensions = "yes"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
- Search Bar = "http://www.{BLOCKED}e.com/ie"

To delete the registry value this malware/grayware created:

Open Registry Editor. Click Start>Run, type REGEDIT, then press Enter.
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Internet Settings>Zones>0
In the right panel, locate and delete the entry:
1208 = "0"
Again In the right panel, locate and delete the entry:
2500 = "3"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Internet Settings>Zones>1
In the right panel, locate and delete the entry:
1208 = "0"
Again In the right panel, locate and delete the entry:
2500 = "3"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Internet Settings>Zones>2
In the right panel, locate and delete the entry:
1208 = "0"
Again In the right panel, locate and delete the entry:
2500 = "3"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Internet Settings>Zones>3
In the right panel, locate and delete the entry:
1208 = "0"
Again In the right panel, locate and delete the entry:
2500 = "3"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Internet Settings>Zones>4
In the right panel, locate and delete the entry:
1208 = "0"
Again In the right panel, locate and delete the entry:
2500 = "3"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Security Center
In the right panel, locate and delete the entry:
AntiVirusDisableNotify = "1"
Again In the right panel, locate and delete the entry:
FirewallDisableNotify = "1"
Again In the right panel, locate and delete the entry:
UpdatesDisableNotify = "1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>SharedAccess>Parameters>FirewallPolicy>StandardProfile
In the right panel, locate and delete the entry:
EnableFirewall = "0"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Internet Explorer>Main
In the right panel, locate and delete the entry:
Enable Browser Extensions = "yes"
Again In the right panel, locate and delete the entry:
Search Bar = "http://www.{BLOCKED}e.com/ie"
Close Registry Editor.

Step 3

Restore this modified registry value

[ Learn More ]

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0
- 1200 = "0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0
- From: 1201 = "0"
  To: 1201 = ""1""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0
- 1608 = "0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0
- 1804 = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1
- 1200 = "0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1
- From: 1201 = "0"
  To: 1201 = ""3""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1
- 1608 = "0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1
- From: 1804 = "1"
  To: 1804 = ""1""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2
- 1200 = "0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2
- From: 1201 = "0"
  To: 1201 = ""1""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2
- 1608 = "0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2
- 1804 = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3
- 1200 = "0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3
- From: 1201 = "0"
  To: 1201 = ""3""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3
- 1608 = "0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3
- From: 1804 = "1"
  To: 1804 = ""1""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4
- From: 1200 = "0"
  To: 1200 = ""3""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4
- From: 1201 = "0"
  To: 1201 = ""3""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4
- From: 1608 = "0"
  To: 1608 = ""3""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4
- From: 1804 = "1"
  To: 1804 = ""3""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center
- AntiVirusDisableNotify = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center
- FirewallDisableNotify = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center
- UpdatesDisableNotify = "1"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
- From: Search Page = "http://www.{BLOCKED}e.com"
  To: Search Page = ""http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch""

In HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
- From: Start Page = "http://www.{BLOCKED}e.com"
  To: Start Page = ""http://www.microsoft.com/isapi/redir.dll?prd=ie&pver=6&ar=msnhome""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main
- From: Default_Search_URL = "http://www.{BLOCKED}e.com/ie"
  To: Default_Search_URL = ""http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main
- From: Search Page = "http://www.{BLOCKED}e.com"
  To: Search Page = ""http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main
- From: Start Page = "http://www.{BLOCKED}e.com"
  To: Start Page = ""http://www.microsoft.com/isapi/redir.dll?prd={SUB_PRD}&clcid={SUB_CLSID}&pver={SUB_PVER}&ar=home""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Search
- From: SearchAssistant = "http://www.{BLOCKED}e.com"
  To: SearchAssistant = ""http://ie.search.msn.com/{SUB_RFC1766}/srchasst/srchasst.htm""

To restore the registry value this malware/grayware/spyware modified:

Open Registry Editor. Click Start>Run, type REGEDIT, then press Enter.
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Internet Settings>Zones>0
In the right panel, locate the registry value:
1200 = "0"
Again In the right panel, locate the registry value:
1201 = "0"
Right-click on the value name and choose Modify. Change the value data of this entry to:
1201 = "1"
Again In the right panel, locate the registry value:
1608 = "0"
Again In the right panel, locate the registry value:
1804 = "1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Internet Settings>Zones>1
In the right panel, locate the registry value:
1200 = "0"
Again In the right panel, locate the registry value:
1201 = "0"
Right-click on the value name and choose Modify. Change the value data of this entry to:
1201 = "3"
Again In the right panel, locate the registry value:
1608 = "0"
Again In the right panel, locate the registry value:
1804 = "1"
Right-click on the value name and choose Modify. Change the value data of this entry to:
1804 = "1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Internet Settings>Zones>2
In the right panel, locate the registry value:
1200 = "0"
Again In the right panel, locate the registry value:
1201 = "0"
Right-click on the value name and choose Modify. Change the value data of this entry to:
1201 = "1"
Again In the right panel, locate the registry value:
1608 = "0"
Again In the right panel, locate the registry value:
1804 = "1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Internet Settings>Zones>3
In the right panel, locate the registry value:
1200 = "0"
Again In the right panel, locate the registry value:
1201 = "0"
Right-click on the value name and choose Modify. Change the value data of this entry to:
1201 = "3"
Again In the right panel, locate the registry value:
1608 = "0"
Again In the right panel, locate the registry value:
1804 = "1"
Right-click on the value name and choose Modify. Change the value data of this entry to:
1804 = "1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Internet Settings>Zones>4
In the right panel, locate the registry value:
1200 = "0"
Right-click on the value name and choose Modify. Change the value data of this entry to:
1200 = "3"
Again In the right panel, locate the registry value:
1201 = "0"
Right-click on the value name and choose Modify. Change the value data of this entry to:
1201 = "3"
Again In the right panel, locate the registry value:
1608 = "0"
Right-click on the value name and choose Modify. Change the value data of this entry to:
1608 = "3"
Again In the right panel, locate the registry value:
1804 = "1"
Right-click on the value name and choose Modify. Change the value data of this entry to:
1804 = "3"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Security Center
In the right panel, locate the registry value:
AntiVirusDisableNotify = "1"
Again In the right panel, locate the registry value:
FirewallDisableNotify = "1"
Again In the right panel, locate the registry value:
UpdatesDisableNotify = "1"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Internet Explorer>Main
In the right panel, locate the registry value:
Search Page = "http://www.{BLOCKED}e.com"
Right-click on the value name and choose Modify. Change the value data of this entry to:
Search Page = "http://www.microsoft.com/isapi/redir.dll?prd
Again In the right panel, locate the registry value:
Start Page = "http://www.{BLOCKED}e.com"
Right-click on the value name and choose Modify. Change the value data of this entry to:
Start Page = "http://www.microsoft.com/isapi/redir.dll?prd
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Internet Explorer>Main
In the right panel, locate the registry value:
Default_Search_URL = "http://www.{BLOCKED}e.com/ie"
Right-click on the value name and choose Modify. Change the value data of this entry to:
Default_Search_URL = "http://www.microsoft.com/isapi/redir.dll?prd
Again In the right panel, locate the registry value:
Search Page = "http://www.{BLOCKED}e.com"
Right-click on the value name and choose Modify. Change the value data of this entry to:
Search Page = "http://www.microsoft.com/isapi/redir.dll?prd
Again In the right panel, locate the registry value:
Start Page = "http://www.{BLOCKED}e.com"
Right-click on the value name and choose Modify. Change the value data of this entry to:
Start Page = "http://www.microsoft.com/isapi/redir.dll?prd
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Internet Explorer>Search
In the right panel, locate the registry value:
SearchAssistant = "http://www.{BLOCKED}e.com"
Right-click on the value name and choose Modify. Change the value data of this entry to:
SearchAssistant = "http://ie.search.msn.com/{SUB_RFC1766}/srchasst/srchasst.htm"
Close Registry Editor.

Step 4

Scan your computer with your Trend Micro product to delete files detected as TROJ_VIRANTIX.AF. 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 5

Restore these deleted registry keys/values from backup

*Note: Only Microsoft-related keys/values will be restored. If the malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects
- {18DF081C-E8AD-4283-A596-FA578C2EBDC3}

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