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Backdoor.Win64.VICERCON.A

June 12, 2020
 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Backdoor 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:

1,301,300 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

12 Jun 2020

Arrival Details

This Backdoor 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 Backdoor adds the following processes:

  • %System%\clients.exe xhrslqlge
  • %Windows%\Microsoft.NET\Framework\v4.0.30319\mscorsvw.exe
  • %System%\svchost.exe -k LocalServiceAndNoImpersonation
  • %Windows%\Microsoft.NET\Framework64\v4.0.30319\mscorsvw.exe
  • %System%\sppsvc.exe
  • "%System Root%\Program Files\Windows Media Player\wmpnetwk.exe"
  • %System%\svchost.exe -k WerSvcGroup
  • %System%\svchost.exe -k NetworkService

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)

It creates the following folders:

  • %Fonts%\Msbuild
  • %Fonts%\clientdb\ds
  • %Fonts%\clientdb
  • %Fonts%\clientdb\gt

(Note: %Fonts% is the Windows Fonts folder, which is usually C:\Window\Fonts on Windows 2000(32-bit), XP, Server 2003(32-bit), Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Autostart Technique

This Backdoor registers itself as a system service to ensure its automatic execution at every system startup by adding the following registry entries:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\xhrslqlge
ImagePath = "%System%\clients.exe xhrslqlge"

Other System Modifications

This Backdoor deletes the following files:

  • %Windows%\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\Caches\{AFBF9F1A-8EE8-4C77-AF34-C647E37CA0D9}.1.ver0x0000000000000000.db
  • {malware file path and name}
  • %Windows%\LastGood.Tmp

(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
SHTinfo
staticpeer = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
SHTinfo
sha1 = "ad6a5342d7358a8676eadd60503e5d7117f1a887"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
SHTinfo
peer = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
SHTinfo
notice = "4dad7a07676665646b6a69686f6e6d6c737271707776"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
SHTinfo
tunnel = "a3d8b8ca7c7d7e7f7071"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
SHTinfo
intranet = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
SHTinfo
comment = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
SHTinfo
notice = "1af94d98d36b6968676665644e429fbd8c377d7c7b7a"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
UPnP Device Host\HTTP Server\VROOTS\
/upnphost
(Default) = "{random characters}"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\xhrslqlge
DisplayName = "Profile Service"

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\xhrslqlge
Start = "SERVICE_AUTO_START"

Dropping Routine

This Backdoor drops the following files:

  • %Windows%\ServiceProfiles\LocalService\AppData\Roaming\Microsoft\UPnP Device Host\upnphost\udhisapi.dll
  • %AppDataLocal%\Microsoft\Media Player\CurrentDatabase_372.wmdb

(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Other Details

This Backdoor connects to the following possibly malicious URL:

  • {BLOCKED}.190.3
  • {BLOCKED}.190.2
  • {BLOCKED}.190.0
  • {BLOCKED}.185.3
  • {BLOCKED}.185.2
  • {BLOCKED}.185.0
  • {BLOCKED}200.4
  • {BLOCKED}200.3
  • {BLOCKED}200.1
  • {BLOCKED}200.0
  • {BLOCKED}.230.3
  • {BLOCKED}.230.2
  • {BLOCKED}.230.0
  • {BLOCKED}.99.3
  • {BLOCKED}198.9
  • {BLOCKED}198.8
  • {BLOCKED}198.6
  • {BLOCKED}198.5
  • {BLOCKED}198.2
  • {BLOCKED}198.189
  • {BLOCKED}185.4
  • {BLOCKED}185.3
  • {BLOCKED}185.1
  • {BLOCKED}185.0
  • {BLOCKED}.27.8
  • {BLOCKED}.27.7
  • {BLOCKED}.27.4
  • {BLOCKED}.27.3
  • {BLOCKED}.27.10
  • {BLOCKED}140.4
  • {BLOCKED}140.2
  • {BLOCKED}140.1
  • {BLOCKED}.6.9
  • {BLOCKED}.6.7
  • {BLOCKED}.6.6
  • {BLOCKED}.6.3
  • {BLOCKED}.6.2
  • {BLOCKED}.6.10
  • {BLOCKED}.50.237
  • {BLOCKED}.40.3
  • {BLOCKED}.40.2
  • {BLOCKED}.40.0
  • {BLOCKED}5.4
  • {BLOCKED}5.2
  • {BLOCKED}5.1
  • {BLOCKED}201.97
  • {BLOCKED}201.8
  • {BLOCKED}201.6
  • {BLOCKED}201.5
  • {BLOCKED}201.4
  • {BLOCKED}201.2
  • {BLOCKED}201.1
  • {BLOCKED}150.4
  • {BLOCKED}150.3
  • {BLOCKED}150.1
  • {BLOCKED}150.0
  • {BLOCKED}147.71
  • {BLOCKED}140.3
  • {BLOCKED}140.0
  • {BLOCKED}109.9
  • {BLOCKED}109.7
  • {BLOCKED}109.6
  • {BLOCKED}109.5
  • {BLOCKED}109.3
  • {BLOCKED}109.173
  • {BLOCKED}109.10
  • {BLOCKED}.30.8
  • {BLOCKED}.30.7
  • {BLOCKED}.30.4
  • {BLOCKED}.30.3
  • {BLOCKED}.30.10
  • {BLOCKED}100.4
  • {BLOCKED}100.2
  • {BLOCKED}100.1
  • {BLOCKED}50.4
  • {BLOCKED}50.2
  • {BLOCKED}50.1
  • {BLOCKED}252.4
  • {BLOCKED}252.2
  • {BLOCKED}252.1
  • {BLOCKED}.65.4
  • {BLOCKED}.65.2
  • {BLOCKED}.65.1
  • {BLOCKED}.170.4
  • {BLOCKED}.170.2
  • {BLOCKED}.170.1
  • {BLOCKED}.20.3
  • {BLOCKED}.20.2
  • {BLOCKED}.20.0
  • {BLOCKED}.50.3
  • {BLOCKED}.50.0
  • {BLOCKED}.5.4
  • {BLOCKED}.5.3
  • {BLOCKED}.5.1
  • {BLOCKED}.5.0
  • {BLOCKED}.73.9
  • {BLOCKED}.73.68
  • {BLOCKED}.73.5
  • {BLOCKED}.73.3
  • {BLOCKED}.73.2
  • {BLOCKED}.60.4
  • {BLOCKED}.60.3
  • {BLOCKED}.60.1
  • {BLOCKED}.60.0
  • {BLOCKED}85.3
  • {BLOCKED}85.2
  • {BLOCKED}254.221
  • {BLOCKED}.39.8
  • {BLOCKED}.39.74
  • {BLOCKED}.39.5
  • {BLOCKED}.39.4
  • {BLOCKED}.39.2
  • {BLOCKED}.39.10
  • {BLOCKED}.90.2
  • {BLOCKED}.90.1
  • {BLOCKED}.21.60
  • {BLOCKED}.21.4
  • {BLOCKED}.21.3
  • {BLOCKED}.21.10
  • {BLOCKED}81.9
  • {BLOCKED}81.6
  • {BLOCKED}81.5
  • {BLOCKED}81.3
  • {BLOCKED}81.2
  • {BLOCKED}186.8
  • {BLOCKED}186.7
  • {BLOCKED}186.5
  • {BLOCKED}186.4
  • {BLOCKED}186.2
  • {BLOCKED}186.196
  • {BLOCKED}186.10
  • {BLOCKED}60.4
  • {BLOCKED}60.3
  • {BLOCKED}60.1
  • {BLOCKED}60.0
  • {BLOCKED}.93.9
  • {BLOCKED}.93.7
  • {BLOCKED}.93.6
  • {BLOCKED}.93.4
  • {BLOCKED}.93.10
  • {BLOCKED}33.170
  • {BLOCKED}202.9
  • {BLOCKED}202.8
  • {BLOCKED}202.6
  • {BLOCKED}202.3
  • {BLOCKED}202.2
  • {BLOCKED}195.104
  • {BLOCKED}37.8
  • {BLOCKED}37.7
  • {BLOCKED}37.5
  • {BLOCKED}37.2
  • {BLOCKED}37.188
  • {BLOCKED}37.10
  • {BLOCKED}246.9
  • {BLOCKED}246.8
  • {BLOCKED}246.6
  • {BLOCKED}246.5
  • {BLOCKED}246.3
  • {BLOCKED}246.2
  • {BLOCKED}245.64
  • {BLOCKED}.4.9
  • {BLOCKED}.4.7
  • {BLOCKED}.4.6
  • {BLOCKED}.4.4
  • {BLOCKED}.4.10
  • {BLOCKED}.1.4
  • {BLOCKED}.1.3
  • {BLOCKED}.1.1
  • {BLOCKED}4.190.3
  • {BLOCKED}4.190.2
  • {BLOCKED}4.190.0
  • {BLOCKED}.168.7
  • {BLOCKED}.168.6
  • {BLOCKED}.168.4
  • {BLOCKED}.168.3
  • {BLOCKED}.168.10
  • {BLOCKED}8.16.9
  • {BLOCKED}8.16.8
  • {BLOCKED}8.16.76
  • {BLOCKED}8.16.6
  • {BLOCKED}8.16.5
  • {BLOCKED}8.16.3
  • {BLOCKED}8.16.2
  • {BLOCKED}5.34.8
  • {BLOCKED}5.34.7
  • {BLOCKED}5.34.69
  • {BLOCKED}5.34.5
  • {BLOCKED}5.34.4
  • {BLOCKED}5.34.2
  • {BLOCKED}5.34.1
  • {BLOCKED}5.25.4
  • {BLOCKED}5.25.2
  • {BLOCKED}5.25.1
  • {BLOCKED}2.56.7
  • {BLOCKED}2.56.6
  • {BLOCKED}2.56.4
  • {BLOCKED}2.56.3
  • {BLOCKED}2.56.10
  • {BLOCKED}4.45.4
  • {BLOCKED}4.45.3
  • {BLOCKED}4.45.1
  • {BLOCKED}4.45.0
  • {BLOCKED}.31.8
  • {BLOCKED}.31.7
  • {BLOCKED}.31.5
  • {BLOCKED}.31.4
  • {BLOCKED}.31.2
  • {BLOCKED}.31.10
  • {BLOCKED}.0.93
  • {BLOCKED}.0.8
  • {BLOCKED}.0.7
  • {BLOCKED}.0.4
  • {BLOCKED}.0.2
  • {BLOCKED}.0.1
  • {BLOCKED}3.40.3
  • {BLOCKED}3.40.2
  • {BLOCKED}3.40.0
  • {BLOCKED}6.127.9
  • {BLOCKED}6.127.8
  • {BLOCKED}6.127.6
  • {BLOCKED}6.127.5
  • {BLOCKED}6.127.3
  • {BLOCKED}6.127.2
  • {BLOCKED}39.8
  • {BLOCKED}39.7
  • {BLOCKED}39.5
  • {BLOCKED}39.2
  • {BLOCKED}39.10
  • {BLOCKED}25.4
  • {BLOCKED}25.3
  • {BLOCKED}25.1
  • {BLOCKED}25.0
  • {BLOCKED}.235.9
  • {BLOCKED}.235.8
  • {BLOCKED}.235.6
  • {BLOCKED}.235.5
  • {BLOCKED}.235.3
  • {BLOCKED}.235.2
  • {BLOCKED}.220.3
  • {BLOCKED}.220.2
  • {BLOCKED}.220.0
  • {BLOCKED}.222.155
  • {BLOCKED}.210.4
  • {BLOCKED}.210.2
  • {BLOCKED}.210.1
  • {BLOCKED}.128.8
  • {BLOCKED}.128.5
  • {BLOCKED}.128.4
  • {BLOCKED}.128.2
  • {BLOCKED}.128.10
  • {BLOCKED}1.12.9
  • {BLOCKED}1.12.7
  • {BLOCKED}1.12.63
  • {BLOCKED}1.12.4
  • {BLOCKED}1.12.3
  • {BLOCKED}1.12.10
  • {BLOCKED}1.1.4
  • {BLOCKED}1.1.3
  • {BLOCKED}1.1.1
  • {BLOCKED}1.1.0
  • {BLOCKED}.152.9
  • {BLOCKED}.152.7
  • {BLOCKED}.152.6
  • {BLOCKED}.152.4
  • {BLOCKED}.152.3
  • {BLOCKED}.152.10
  • {BLOCKED}.152.2
  • {BLOCKED}.152.0
  • {BLOCKED}.155.3
  • {BLOCKED}.155.2
  • {BLOCKED}.155.0
  • {BLOCKED}.218.9
  • {BLOCKED}.218.8
  • {BLOCKED}.218.6
  • {BLOCKED}.218.5
  • {BLOCKED}.218.3
  • {BLOCKED}.218.2
  • {BLOCKED}.218.133
  • {BLOCKED}.155.1
  • {BLOCKED}.112.8
  • {BLOCKED}.112.7
  • {BLOCKED}.112.5
  • {BLOCKED}.112.4
  • {BLOCKED}.112.2
  • {BLOCKED}.112.114
  • {BLOCKED}.112.10
  • {BLOCKED}.110.4
  • {BLOCKED}.110.3
  • {BLOCKED}.110.1
  • {BLOCKED}.110.0
  • {BLOCKED}.93.3
  • {BLOCKED}.194.9
  • {BLOCKED}.194.8
  • {BLOCKED}.194.7
  • {BLOCKED}.194.6
  • {BLOCKED}.194.5
  • {BLOCKED}.194.3
  • {BLOCKED}.194.2
  • {BLOCKED}.131.9
  • {BLOCKED}.131.8
  • {BLOCKED}.131.6
  • {BLOCKED}.131.5
  • {BLOCKED}.131.3
  • {BLOCKED}.131.182
  • {BLOCKED}.168.5
  • {BLOCKED}.168.237
  • {BLOCKED}1.230.4
  • {BLOCKED}1.230.2
  • {BLOCKED}1.230.1
  • {BLOCKED}8.121.5
  • {BLOCKED}8.121.4
  • {BLOCKED}8.121.2
  • {BLOCKED}8.121.1
  • {BLOCKED}3.10.3
  • {BLOCKED}3.10.2
  • {BLOCKED}3.10.0
  • {BLOCKED}1.125.9
  • {BLOCKED}1.125.7
  • {BLOCKED}1.125.6
  • {BLOCKED}1.125.4
  • {BLOCKED}1.125.3
  • {BLOCKED}1.125.10
  • {BLOCKED}1.189.9
  • {BLOCKED}1.189.8
  • {BLOCKED}1.189.6
  • {BLOCKED}1.189.5
  • {BLOCKED}1.189.3
  • {BLOCKED}1.189.2
  • {BLOCKED}8.50.4
  • {BLOCKED}8.50.2
  • {BLOCKED}8.50.1
  • {BLOCKED}4.189.8
  • {BLOCKED}4.189.7
  • {BLOCKED}4.189.5
  • {BLOCKED}4.189.4
  • {BLOCKED}4.189.2
  • {BLOCKED}4.189.141
  • {BLOCKED}.33.9
  • {BLOCKED}.33.7
  • {BLOCKED}.33.4
  • {BLOCKED}.33.3
  • {BLOCKED}.33.10
  • {BLOCKED}2.85.4
  • {BLOCKED}2.85.3
  • {BLOCKED}2.85.1
  • {BLOCKED}2.85.0
  • {BLOCKED}8.35.4
  • {BLOCKED}8.35.2
  • {BLOCKED}8.35.1
  • {BLOCKED}9.165.4
  • {BLOCKED}9.165.3
  • {BLOCKED}9.165.1
  • {BLOCKED}9.165.0
  • {BLOCKED}90.4
  • {BLOCKED}90.2
  • {BLOCKED}90.1
  • {BLOCKED}.1.2
  • {BLOCKED}.1.0
  • {BLOCKED}4.25.3
  • {BLOCKED}4.25.0
  • {BLOCKED}.230.4
  • {BLOCKED}.230.1
  • {BLOCKED}.213.6
  • {BLOCKED}.213.5
  • {BLOCKED}.213.3
  • {BLOCKED}.213.2
  • {BLOCKED}.145.3
  • {BLOCKED}.145.2
  • {BLOCKED}.145.0
  • {BLOCKED}.6.8
  • {BLOCKED}.6.5
  • {BLOCKED}.6.4
  • {BLOCKED}0.1.4
  • {BLOCKED}0.1.2
  • {BLOCKED}0.58.9
  • {BLOCKED}0.58.7
  • {BLOCKED}0.58.4
  • {BLOCKED}0.58.3
  • {BLOCKED}0.58.206
  • {BLOCKED}0.58.10
  • {BLOCKED}7.83.95
  • {BLOCKED}7.83.7
  • {BLOCKED}7.83.6
  • {BLOCKED}7.83.5
  • {BLOCKED}7.83.3
  • {BLOCKED}7.83.2
  • {BLOCKED}7.83.10
  • {BLOCKED}7.75.4
  • {BLOCKED}2.123.9
  • {BLOCKED}2.123.8
  • {BLOCKED}2.123.6
  • {BLOCKED}2.123.5
  • {BLOCKED}2.123.4
  • {BLOCKED}2.123.2
  • {BLOCKED}2.123.1
  • {BLOCKED}7.150.4
  • {BLOCKED}7.150.3
  • {BLOCKED}7.150.1
  • {BLOCKED}.33.8
  • {BLOCKED}.33.17
  • {BLOCKED}.210.3
  • {BLOCKED}.210.0
  • {BLOCKED}230.4
  • {BLOCKED}230.2
  • {BLOCKED}230.1
  • {BLOCKED}0.1.9
  • {BLOCKED}0.1.7
  • {BLOCKED}0.1.6
  • {BLOCKED}0.1.5
  • {BLOCKED}0.1.3
  • {BLOCKED}0.1.10
  • {BLOCKED}0.1.0
  • {BLOCKED}9.252.204
  • {BLOCKED}7.145.9
  • {BLOCKED}7.145.8
  • {BLOCKED}7.145.6
  • {BLOCKED}7.145.5
  • {BLOCKED}7.145.4
  • {BLOCKED}7.145.2
  • {BLOCKED}7.145.1
  • {BLOCKED}2.185.4
  • {BLOCKED}2.185.2
  • {BLOCKED}2.185.0
  • {BLOCKED}.15.8
  • {BLOCKED}.15.7
  • {BLOCKED}.15.4
  • {BLOCKED}.15.3
  • {BLOCKED}.15.166
  • {BLOCKED}.15.10
  • {BLOCKED}.238.194
  • {BLOCKED}.220.4
  • {BLOCKED}.220.1
  • {BLOCKED}.51.9
  • {BLOCKED}.51.8
  • {BLOCKED}.51.6
  • {BLOCKED}.51.5
  • {BLOCKED}.51.4
  • {BLOCKED}.51.2
  • {BLOCKED}.51.1
  • {BLOCKED}5.166.9
  • {BLOCKED}5.166.7
  • {BLOCKED}5.166.6
  • {BLOCKED}5.166.5
  • {BLOCKED}5.166.3
  • {BLOCKED}5.166.2
  • {BLOCKED}5.166.10
  • {BLOCKED}5.145.4
  • {BLOCKED}5.145.2
  • {BLOCKED}5.145.1
  • {BLOCKED}.231.8
  • {BLOCKED}.231.7
  • {BLOCKED}.231.4
  • {BLOCKED}.231.3
  • {BLOCKED}.231.10
  • {BLOCKED}3.17.9
  • {BLOCKED}3.17.7
  • {BLOCKED}3.17.6
  • {BLOCKED}3.17.5
  • {BLOCKED}3.17.3
  • {BLOCKED}3.17.2
  • {BLOCKED}3.17.179
  • {BLOCKED}3.17.10
  • {BLOCKED}6.90.4
  • {BLOCKED}6.90.3
  • {BLOCKED}6.90.1
  • {BLOCKED}6.100.9
  • {BLOCKED}6.100.8
  • {BLOCKED}6.100.6
  • {BLOCKED}6.100.5
  • {BLOCKED}6.100.4
  • {BLOCKED}6.100.2
  • {BLOCKED}6.100.1
  • {BLOCKED}1.140.3
  • {BLOCKED}1.140.2
  • {BLOCKED}1.140.0
  • {BLOCKED}0.180.4
  • {BLOCKED}0.180.2
  • {BLOCKED}0.180.1
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  • {BLOCKED}9.70.3
  • {BLOCKED}9.70.1
  • {BLOCKED}3.128.8
  • {BLOCKED}3.128.7
  • {BLOCKED}3.128.4
  • {BLOCKED}3.128.3
  • {BLOCKED}3.128.10
  • {BLOCKED}.203.9
  • {BLOCKED}.203.7
  • {BLOCKED}.203.6
  • {BLOCKED}.203.5
  • {BLOCKED}.203.3
  • {BLOCKED}.203.2
  • {BLOCKED}.203.10
  • {BLOCKED}.184.9
  • {BLOCKED}.184.6
  • {BLOCKED}.184.5
  • {BLOCKED}.184.4
  • {BLOCKED}.184.2
  • {BLOCKED}.184.1
  • {BLOCKED}6.85.3
  • {BLOCKED}6.85.2
  • {BLOCKED}6.85.0
  • {BLOCKED}.211.4
  • {BLOCKED}.211.3
  • {BLOCKED}.211.1
  • {BLOCKED}.211.0
  • {BLOCKED}.180.4
  • {BLOCKED}.180.2
  • {BLOCKED}.180.1
  • {BLOCKED}.130.4
  • {BLOCKED}.130.3
  • {BLOCKED}.130.1
  • {BLOCKED}.130.0
  • {BLOCKED}1.40.3
  • {BLOCKED}1.40.2
  • {BLOCKED}1.40.0
  • {BLOCKED}2.80.4
  • {BLOCKED}2.80.3
  • {BLOCKED}2.80.1
  • {BLOCKED}2.80.0
  • {BLOCKED}6.210.4
  • {BLOCKED}6.210.2
  • {BLOCKED}6.210.1
  • {BLOCKED}.139.8
  • {BLOCKED}.139.7
  • {BLOCKED}.139.4
  • {BLOCKED}.139.3
  • {BLOCKED}.139.10
  • {BLOCKED}.137.9
  • {BLOCKED}.137.7
  • {BLOCKED}.137.6
  • {BLOCKED}.137.5
  • {BLOCKED}.137.3
  • {BLOCKED}.137.2
  • {BLOCKED}.137.178
  • {BLOCKED}.137.10
  • {BLOCKED}.120.4
  • {BLOCKED}.120.2
  • {BLOCKED}.120.1
  • {BLOCKED}248.9
  • {BLOCKED}248.7
  • {BLOCKED}248.6
  • {BLOCKED}248.4
  • {BLOCKED}248.27
  • {BLOCKED}248.10

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.850

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.

Step 2

Identify and terminate files detected as Backdoor.Win64.VICERCON.A

[ Learn More ]
  1. 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.
  2. 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.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

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_LOCAL_MACHINE\SOFTWARE\Classes\SHTinfo
    • staticpeer = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\SHTinfo
    • sha1 = "ad6a5342d7358a8676eadd60503e5d7117f1a887"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\SHTinfo
    • peer = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\SHTinfo
    • notice = "4dad7a07676665646b6a69686f6e6d6c737271707776"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\SHTinfo
    • tunnel = "a3d8b8ca7c7d7e7f7071"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\SHTinfo
    • intranet = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\SHTinfo
    • comment = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\SHTinfo
    • notice = "1af94d98d36b6968676665644e429fbd8c377d7c7b7a"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\UPnP Device Host\HTTP Server\VROOTS\/upnphost
    • (Default) = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\xhrslqlge
    • DisplayName = "Profile Service"
  • In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\xhrslqlge
    • Start = "SERVICE_AUTO_START"

Step 4

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%\ServiceProfiles\LocalService\AppData\Roaming\Microsoft\UPnP Device Host\upnphost\udhisapi.dll
  • %AppDataLocal%\Microsoft\Media Player\CurrentDatabase_372.wmdb

Step 5

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.
  • %Fonts%\Msbuild
  • %Fonts%\clientdb\ds
  • %Fonts%\clientdb
  • %Fonts%\clientdb\gt

Step 6

Scan your computer with your Trend Micro product to delete files detected as Backdoor.Win64.VICERCON.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:

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.

  • %Windows%\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\Caches\{AFBF9F1A-8EE8-4C77-AF34-C647E37CA0D9}.1.ver0x0000000000000000.db
  • {malware file path and name}
  • %Windows%\LastGood.Tmp


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