TROJ_NEDSYM.YXW

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.

File Size: 3,037,696 bytes

File Type: EXE

Memory Resident: Yes

Initial Samples Received Date: 10 Jan 2015

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.

Installation

This Trojan creates the following folders:

%System Root%\virus
%System Root%\RavBin
%Start Menu%\Programs\T-Saver
%Program Files%\TSaverClient
%System Root%\DOCUME~1
%System Root%\DOCUME~1\Wilbert
%User Profile%\LOCALS~1
%User Temp%\nsm3B.tmp
%User Profile%\Documents\TSaverClient
%User Profile%\TSaverClient\LOG
%User Profile%\TSaverClient\pol

(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %Start Menu% is the Start Menu folder, where it usually is C:\Documents and Settings\{user name}\Start Menu on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.. %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.. %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Autostart Technique

This Trojan adds the following registry entries to enable its automatic execution at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
RegistryMonitor1 = "%System%\qtplugin.exe"

Other System Modifications

This Trojan deletes the following files:

%System Root%\RavBin\1.bat
%User Temp%\nsf20.tmp
%User Temp%\nsm3B.tmp

(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

It adds the following registry keys:

HKEY_CURRENT_USER\Software\WinRAR SFX

HKEY_LOCAL_MACHINE\Software\LiTech\
TSaverClient

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Setup
RegistryMonitor2 = "90359743"

HKEY_CURRENT_USER\Software\WinRAR SFX
C%%RavBin = "%System Root%\RavBin"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
%Program Files%\TSaverClient\TSaverSrv.exe = "{random characters}"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\DomainProfile\AuthorizedApplications\
List
%Program Files%\TSaverClient\TSaverSrv.exe = "{random characters}"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\GloballyOpenPorts\
List
5945:TCP = "5945:TCP:*:Enabled:TSaverPrint"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\DomainProfile\GloballyOpenPorts\
List
5945:TCP = "5945:TCP:*:Enabled:TSaverPrint"

HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\
TSaverClient
PATH = "%Program Files%\TSaverClient"

HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\
TSaverClient
PORT = "1739"

HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\
TSaverClient
WEB = "276"

HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\
TSaverClient
SER_IP = "10.91.31.26"

HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\
TSaverClient
SN = "0.0.0.0"

HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\
TSaverClient
VER_CUR = "96"

HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\
TSaverClient
VER_NEW = "96"

HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\
TSaverClient
VER_POL = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\
TSaverClient
CNT_APPL = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\
TSaverClient
CNT_PRNT = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\
TSaverClient
CNT_PROF = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\
TSaverClient
ESAVERON = "1"

Dropping Routine

This Trojan drops the following files:

%User Temp%\aut2.tmp
%User Temp%\aut7.tmp
%User Temp%\a.exe
%User Temp%\b.exe
%User Temp%\c.exe
%User Temp%\d.exe
__tmp_rar_sfx_access_check_70859
hosts
1.bat
1.vbs
%User Temp%\nsf22.tmp
%Start Menu%\Programs\T-Saver\T-Saver Settings.lnk
%Start Menu%\Programs\T-Saver\T-Saver Uninstall.lnk
%Program Files%\TSaverClient\TSaverHK.dll
%Program Files%\TSaverClient\TSaverAuth.dll
%Program Files%\TSaverClient\TSaverSrv.exe
%Program Files%\TSaverClient\GateTs.exe
%Program Files%\TSaverClient\TSaverService.exe
%Program Files%\TSaverClient\TSaverGetCert.exe
%Program Files%\TSaverClient\TCPLIBT.dll
%Program Files%\TSaverClient\TSaverUtil.dll
%Program Files%\TSaverClient\HTTPDownLoad.exe
%Program Files%\TSaverClient\remotecall.html
%Program Files%\TSaverClient\remotecall_e.html
%Program Files%\TSaverClient\tsaver.png
%Program Files%\TSaverClient\secucrpr.dll
%Program Files%\TSaverClient\ReallyShDn.exe
%Program Files%\TSaverClient\TSaverDel.exe
%Program Files%\TSaverClient\TSaverGetCert.dll
%Program Files%\TSaverClient\TSaverProferty.exe
%Program Files%\TSaverClient\TSaverLog.exe
%Program Files%\TSaverClient\PowMan.exe
%User Temp%\nsm3B.tmp\RegServiceDLL.dll
%System Root%\virus\a.exe
%System Root%\virus\b.exe

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Start Menu% is the Start Menu folder, where it usually is C:\Documents and Settings\{user name}\Start Menu on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming\Microsoft\Windows\Start Menu on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)

Other Details

This Trojan connects to the following possibly malicious URL:

http://{BLOCKED}6.246.90/a.exe
http://{BLOCKED}6.246.90/b.exe
http://{BLOCKED}6.246.90/c.exe
http://{BLOCKED}6.246.90/d.exe
{BLOCKED}.244.145
{BLOCKED}.115.189
{BLOCKED}.172.28
{BLOCKED}.54.237

This report is generated via an automated analysis system.

Minimum Scan Engine: 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

Restart in Safe Mode

[ Learn More ]

Step 3

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_CURRENT_USER\Software
- WinRAR SFX

In HKEY_LOCAL_MACHINE\Software\LiTech
- TSaverClient

Step 4

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\Run
- RegistryMonitor1 = "%System%\qtplugin.exe"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup
- RegistryMonitor2 = "90359743"

In HKEY_CURRENT_USER\Software\WinRAR SFX
- C%%RavBin = "%System Root%\RavBin"

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List
- %Program Files%\TSaverClient\TSaverSrv.exe = "{random characters}"

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List
- %Program Files%\TSaverClient\TSaverSrv.exe = "{random characters}"

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\GloballyOpenPorts\List
- 5945:TCP = "5945:TCP:*:Enabled:TSaverPrint"

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\GloballyOpenPorts\List
- 5945:TCP = "5945:TCP:*:Enabled:TSaverPrint"

In HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\TSaverClient
- PATH = "%Program Files%\TSaverClient"

In HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\TSaverClient
- PORT = "1739"

In HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\TSaverClient
- WEB = "276"

In HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\TSaverClient
- SER_IP = "10.91.31.26"

In HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\TSaverClient
- SN = "0.0.0.0"

In HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\TSaverClient
- VER_CUR = "96"

In HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\TSaverClient
- VER_NEW = "96"

In HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\TSaverClient
- VER_POL = "0"

In HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\TSaverClient
- CNT_APPL = "0"

In HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\TSaverClient
- CNT_PRNT = "0"

In HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\TSaverClient
- CNT_PROF = "0"

In HKEY_LOCAL_MACHINE\SOFTWARE\LiTech\TSaverClient
- ESAVERON = "1"

To delete the registry value this malware/grayware created:

Open Registry Editor.
» For Windows 2000, Windows XP, and Windows Server 2003 users, click Start>Run, type regedit in the text box provided, and then press Enter.
» For Windows Vista, Windows 7, and Windows Server 2008 users, click the Start button, type regedit in the Search input field then press Enter.
» For Windows 8, Windows 8.1, and Windows Server 2012 users, right-click on the lower-left corner of the screen, click Run, type regedit in the text box provided, and then press Enter.
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Run
In the right panel, locate and delete the entry:
RegistryMonitor1 = "%System%\qtplugin.exe"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Setup
In the right panel, locate and delete the entry:
RegistryMonitor2 = "90359743"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>WinRAR SFX
In the right panel, locate and delete the entry:
C%%RavBin = "%System Root%\RavBin"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>SharedAccess>Parameters>FirewallPolicy>StandardProfile>AuthorizedApplications>List
In the right panel, locate and delete the entry:
%Program Files%\TSaverClient\TSaverSrv.exe = "{random characters}"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>SharedAccess>Parameters>FirewallPolicy>DomainProfile>AuthorizedApplications>List
In the right panel, locate and delete the entry:
%Program Files%\TSaverClient\TSaverSrv.exe = "{random characters}"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>SharedAccess>Parameters>FirewallPolicy>StandardProfile>GloballyOpenPorts>List
In the right panel, locate and delete the entry:
5945:TCP = "5945:TCP:*:Enabled:TSaverPrint"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>SharedAccess>Parameters>FirewallPolicy>DomainProfile>GloballyOpenPorts>List
In the right panel, locate and delete the entry:
5945:TCP = "5945:TCP:*:Enabled:TSaverPrint"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>LiTech>TSaverClient
In the right panel, locate and delete the entry:
PATH = "%Program Files%\TSaverClient"
Again In the right panel, locate and delete the entry:
PORT = "1739"
Again In the right panel, locate and delete the entry:
WEB = "276"
Again In the right panel, locate and delete the entry:
SER_IP = "10.91.31.26"
Again In the right panel, locate and delete the entry:
SN = "0.0.0.0"
Again In the right panel, locate and delete the entry:
VER_CUR = "96"
Again In the right panel, locate and delete the entry:
VER_NEW = "96"
Again In the right panel, locate and delete the entry:
VER_POL = "0"
Again In the right panel, locate and delete the entry:
CNT_APPL = "0"
Again In the right panel, locate and delete the entry:
CNT_PRNT = "0"
Again In the right panel, locate and delete the entry:
CNT_PROF = "0"
Again In the right panel, locate and delete the entry:
ESAVERON = "1"
Close Registry Editor.

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.

%User Temp%\aut2.tmp
%User Temp%\aut7.tmp
%User Temp%\a.exe
%User Temp%\b.exe
%User Temp%\c.exe
%User Temp%\d.exe
__tmp_rar_sfx_access_check_70859
hosts
1.bat
1.vbs
%User Temp%\nsf22.tmp
%Start Menu%\Programs\T-Saver\T-Saver Settings.lnk
%Start Menu%\Programs\T-Saver\T-Saver Uninstall.lnk
%Program Files%\TSaverClient\TSaverHK.dll
%Program Files%\TSaverClient\TSaverAuth.dll
%Program Files%\TSaverClient\TSaverSrv.exe
%Program Files%\TSaverClient\GateTs.exe
%Program Files%\TSaverClient\TSaverService.exe
%Program Files%\TSaverClient\TSaverGetCert.exe
%Program Files%\TSaverClient\TCPLIBT.dll
%Program Files%\TSaverClient\TSaverUtil.dll
%Program Files%\TSaverClient\HTTPDownLoad.exe
%Program Files%\TSaverClient\remotecall.html
%Program Files%\TSaverClient\remotecall_e.html
%Program Files%\TSaverClient\tsaver.png
%Program Files%\TSaverClient\secucrpr.dll
%Program Files%\TSaverClient\ReallyShDn.exe
%Program Files%\TSaverClient\TSaverDel.exe
%Program Files%\TSaverClient\TSaverGetCert.dll
%Program Files%\TSaverClient\TSaverProferty.exe
%Program Files%\TSaverClient\TSaverLog.exe
%Program Files%\TSaverClient\PowMan.exe
%User Temp%\nsm3B.tmp\RegServiceDLL.dll
%System Root%\virus\a.exe
%System Root%\virus\b.exe

To manually delete a malware/grayware file from an affected system:

• For Windows 2000, Windows XP, and Windows Server 2003:

Right-click Start then click Search....
In the File name* input box, type the following:
%User Temp%\aut2.tmp
%User Temp%\aut7.tmp
%User Temp%\a.exe
%User Temp%\b.exe
%User Temp%\c.exe
%User Temp%\d.exe
__tmp_rar_sfx_access_check_70859
hosts
1.bat
1.vbs
%User Temp%\nsf22.tmp
%Start Menu%\Programs\T-Saver\T-Saver Settings.lnk
%Start Menu%\Programs\T-Saver\T-Saver Uninstall.lnk
%Program Files%\TSaverClient\TSaverHK.dll
%Program Files%\TSaverClient\TSaverAuth.dll
%Program Files%\TSaverClient\TSaverSrv.exe
%Program Files%\TSaverClient\GateTs.exe
%Program Files%\TSaverClient\TSaverService.exe
%Program Files%\TSaverClient\TSaverGetCert.exe
%Program Files%\TSaverClient\TCPLIBT.dll
%Program Files%\TSaverClient\TSaverUtil.dll
%Program Files%\TSaverClient\HTTPDownLoad.exe
%Program Files%\TSaverClient\remotecall.html
%Program Files%\TSaverClient\remotecall_e.html
%Program Files%\TSaverClient\tsaver.png
%Program Files%\TSaverClient\secucrpr.dll
%Program Files%\TSaverClient\ReallyShDn.exe
%Program Files%\TSaverClient\TSaverDel.exe
%Program Files%\TSaverClient\TSaverGetCert.dll
%Program Files%\TSaverClient\TSaverProferty.exe
%Program Files%\TSaverClient\TSaverLog.exe
%Program Files%\TSaverClient\PowMan.exe
%User Temp%\nsm3B.tmp\RegServiceDLL.dll
%System Root%\virus\a.exe
%System Root%\virus\b.exe
In the Look In drop-down list, select My Computer then press Enter.
Once located, select the file then press SHIFT+DELETE to delete it.
*Note: The file name input box title varies depending on the Windows version (e.g. Search for files or folders named or All or part of the file name.).

• For Windows Vista, Windows 7, Windows Server 2008, Windows 8, Windows 8.1, and Windows Server 2012:

Open a Windows Explorer window.
- For Windows Vista, 7, and Server 2008 users, click Start>Computer.
- For Windows 8, 8.1, and Server 2012 users, right-click on the lower left corner of the screen,then click File Explorer.
In the Search Computer/This PC input box, type:
%User Temp%\aut2.tmp
%User Temp%\aut7.tmp
%User Temp%\a.exe
%User Temp%\b.exe
%User Temp%\c.exe
%User Temp%\d.exe
__tmp_rar_sfx_access_check_70859
hosts
1.bat
1.vbs
%User Temp%\nsf22.tmp
%Start Menu%\Programs\T-Saver\T-Saver Settings.lnk
%Start Menu%\Programs\T-Saver\T-Saver Uninstall.lnk
%Program Files%\TSaverClient\TSaverHK.dll
%Program Files%\TSaverClient\TSaverAuth.dll
%Program Files%\TSaverClient\TSaverSrv.exe
%Program Files%\TSaverClient\GateTs.exe
%Program Files%\TSaverClient\TSaverService.exe
%Program Files%\TSaverClient\TSaverGetCert.exe
%Program Files%\TSaverClient\TCPLIBT.dll
%Program Files%\TSaverClient\TSaverUtil.dll
%Program Files%\TSaverClient\HTTPDownLoad.exe
%Program Files%\TSaverClient\remotecall.html
%Program Files%\TSaverClient\remotecall_e.html
%Program Files%\TSaverClient\tsaver.png
%Program Files%\TSaverClient\secucrpr.dll
%Program Files%\TSaverClient\ReallyShDn.exe
%Program Files%\TSaverClient\TSaverDel.exe
%Program Files%\TSaverClient\TSaverGetCert.dll
%Program Files%\TSaverClient\TSaverProferty.exe
%Program Files%\TSaverClient\TSaverLog.exe
%Program Files%\TSaverClient\PowMan.exe
%User Temp%\nsm3B.tmp\RegServiceDLL.dll
%System Root%\virus\a.exe
%System Root%\virus\b.exe
Once located, select the file then press SHIFT+DELETE to delete it.
*Note: Read the following Microsoft page if these steps do not work on Windows 7.

Step 6

Search and delete these folders

[ Learn More ]

Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.

%System Root%\virus
%System Root%\RavBin
%Start Menu%\Programs\T-Saver
%Program Files%\TSaverClient
%System Root%\DOCUME~1
%System Root%\DOCUME~1\Wilbert
%User Profile%\LOCALS~1
%User Temp%\nsm3B.tmp
%User Profile%\Documents\TSaverClient
%User Profile%\TSaverClient\LOG
%User Profile%\TSaverClient\pol

To delete malware/grayware/spyware folders:

For Windows 2000, Windows XP, and Windows Server 2003:

Right-click Start then click Search... or Find..., depending on the version of Windows you are running.
In the File name* input box, type:

%System Root%\virus
%System Root%\RavBin
%Start Menu%\Programs\T-Saver
%Program Files%\TSaverClient
%System Root%\DOCUME~1
%System Root%\DOCUME~1\Wilbert
%User Profile%\LOCALS~1
%User Temp%\nsm3B.tmp
%User Profile%\Documents\TSaverClient
%User Profile%\TSaverClient\LOG
%User Profile%\TSaverClient\pol
In the Look In drop-down list, select My Computer, then press Enter.
Once located, select the folder then press SHIFT+DELETE to permanently delete the folder.
Repeat steps 2 to 4 for the remaining folders: %System Root%\virus
%System Root%\RavBin
%Start Menu%\Programs\T-Saver
%Program Files%\TSaverClient
%System Root%\DOCUME~1
%System Root%\DOCUME~1\Wilbert
%User Profile%\LOCALS~1
%User Temp%\nsm3B.tmp
%User Profile%\Documents\TSaverClient
%User Profile%\TSaverClient\LOG
%User Profile%\TSaverClient\pol

*Note: The file name input box title varies depending on the Windows version (e.g. Search for files or folders named or All or part of the file name.).

For Windows Vista, Windows 7, Windows Server 2008, Windows 8, Windows 8.1, and Windows Server 2012:

Open a Windows Explorer window.
- For Windows Vista, 7, and Server 2008 users, click Start>Computer.
- For Windows 8, 8.1, and Server 2012 users, right-click on the lower left corner of the screen, then click File Explorer.
In the Search Computer/This PC input box, type:
%System Root%\virus
%System Root%\RavBin
%Start Menu%\Programs\T-Saver
%Program Files%\TSaverClient
%System Root%\DOCUME~1
%System Root%\DOCUME~1\Wilbert
%User Profile%\LOCALS~1
%User Temp%\nsm3B.tmp
%User Profile%\Documents\TSaverClient
%User Profile%\TSaverClient\LOG
%User Profile%\TSaverClient\pol
Once located, select the file then press SHIFT+DELETE to permanently delete the folder.
Repeat steps 2-3 for the remaining folders: %System Root%\virus
%System Root%\RavBin
%Start Menu%\Programs\T-Saver
%Program Files%\TSaverClient
%System Root%\DOCUME~1
%System Root%\DOCUME~1\Wilbert
%User Profile%\LOCALS~1
%User Temp%\nsm3B.tmp
%User Profile%\Documents\TSaverClient
%User Profile%\TSaverClient\LOG
%User Profile%\TSaverClient\pol

*Note: Read the following Microsoft page if these steps do not work on Windows 7.

Step 7

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_NEDSYM.YXW. 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 8

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.

%System Root%\RavBin\1.bat
%User Temp%\nsf20.tmp
%User Temp%\nsm3B.tmp

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