PUA.SafelyOnline

Updated: August 02, 2019 6:02:00 AM
Type: Potentially Unwanted App
Infection Length: Varies
Name: Safely
Version: 1.0.1
Publisher: Unknown
Risk Impact: Low
Systems Affected: Windows

Behavior

PUA.SafelyOnline is a potentially unwanted application that modifies web browser settings without user consent.

Technical Description

When the application is executed, it creates the following folders:

  • %AllUsersProfile%\Administrator\AppData\Local\Google\Chrome\User Data\Default\Extensions\ebpjnjghimiofdlpnmhclanhckablllf
  • %AllUsersProfile%\Administrator\AppData\Local\Google\Chrome\User Data\Default\Extensions\ebpjnjghimiofdlpnmhclanhckablllf\1.7.2_0
  • %AllUsersProfile%\Administrator\AppData\Local\Google\Chrome\User Data\Default\Extensions\ebpjnjghimiofdlpnmhclanhckablllf\1.7.2_0\_metadata
  • %AllUsersProfile%\Administrator\AppData\Local\Google\Chrome\User Data\Default\Extensions\ebpjnjghimiofdlpnmhclanhckablllf\1.7.2_0\frame
  • %AllUsersProfile%\Administrator\AppData\Local\Google\Chrome\User Data\Default\Extensions\ebpjnjghimiofdlpnmhclanhckablllf\1.7.2_0\img
  • %AllUsersProfile%\Administrator\AppData\Local\Google\Chrome\User Data\Default\Extensions\ebpjnjghimiofdlpnmhclanhckablllf\1.7.2_0\jquery
  • %AllUsersProfile%\Administrator\AppData\Local\Google\Chrome\User Data\Default\Extensions\ebpjnjghimiofdlpnmhclanhckablllf\1.7.2_0\popup

The application then creates the following files:

  • %AllUsersProfile%\Administrator\AppData\Local\Google\Chrome\User Data\Default\Extensions\ebpjnjghimiofdlpnmhclanhckablllf\1.7.2_0\background.js
  • %AllUsersProfile%\Administrator\AppData\Local\Google\Chrome\User Data\Default\Extensions\ebpjnjghimiofdlpnmhclanhckablllf\1.7.2_0\dashboard.js
  • %AllUsersProfile%\Administrator\AppData\Local\Google\Chrome\User Data\Default\Extensions\ebpjnjghimiofdlpnmhclanhckablllf\1.7.2_0\manifest.json
  • %AllUsersProfile%\Administrator\AppData\Local\Google\Chrome\User Data\Default\Extensions\ebpjnjghimiofdlpnmhclanhckablllf\1.7.2_0\rate.js

Next, the application creates the following registry entry:

  • HKEY_CURRENT_USER\Software\Google\Chrome\PreferenceMACs\Default\extensions.settings\”ebpjnjghimiofdlpnmhclanhckablllf” = “FC12B625F397AD5527F8C01A38E21420B8B1C5BAAF61CB221C61F740D41B4930”

The application changes the browser’s default search engine without the user’s consent. It also fails perform its advertised functionality, which is to identify malicious sites. Moreover, it is itself flagged unsafe by browsers.

Removal

You may use Anti Virus for this risk.

Before proceeding further we recommend that you run a full system scan.

Adware.4SharedDesktop

Updated: July 29, 2019 7:40:16 AM
Type: Adware
Infection Length: Varies
Name: 4Shared Desktop
Version: 4.0.2.6
Publisher: New IT Limited
Risk Impact: High
Systems Affected: Windows

Behavior

Adware.4SharedDesktop is a program that modifies browser settings and displays out-of-context pop-up advertisements on the computer.

Technical Description

When the program is executed, it creates the following files:

  • %ProgramFiles%\4shared Desktop\desktop.exe
  • %ProgramFiles%\4shared Desktop\Desktop32.dll
  • %ProgramFiles%\4shared Desktop\license.txt
  • %ProgramFiles%\4shared Desktop\readme.txt
  • %ProgramFiles%\4shared Desktop\ssleay32.dll
  • %ProgramFiles%\4shared Desktop\uninstall.exe
  • %SystemDrive%\Documents and Settings\All Users\Start Menu\Programs\4shared Tools\4shared Desktop.lnk
  • %SystemDrive%\Documents and Settings\All Users\Start Menu\Programs\4shared Tools\Uninstall.lnk
  • %SystemDrive%\Documents and Settings\AutoVM\Application Data\Microsoft\Internet Explorer\Quick Launch\4shared Desktop.lnk
  • %SystemDrive%\Documents and Settings\AutoVM\Application Data\4shared Desktop\errors.log
  • %SystemDrive%\Documents and Settings\AutoVM\Cookies\[email protected][2].txt
  • %SystemDrive%\Documents and Settings\AutoVM\Desktop\4shared Desktop.lnk

The program then creates the following registry entries:

  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\*\shellex\ContextMenuHandlers\4shared_Desktop\”” = “{EBDF1F20-C829-11D1-8233-0020AF3E97A9}”
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.exe\shellex\ContextMenuHandlers\4shared_Desktop\”” = “{EBDF1F20-C829-11D1-8233-0020AF3E97A9}”
  • HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.lnk\ShellEx\ContextMenuHandlers\4shared_Desktop\”” = “{EBDF1F20-C829-11D1-8233-0020AF3E97A9}”
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\4shared Desktop\”DisplayName” = “4shared Desktop”
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\4shared Desktop\”DisplayIcon” = “%ProgramFiles%\4shared Desktop\desktop.exe,0”
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\4shared Desktop\”UninstallString” = “%ProgramFiles%\4shared Desktop\uninstall.exe”
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\4shared Desktop\”NoModify” = “1”
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\4shared Desktop\”NoRepair” = “1”
  • HKEY_LOCAL_MACHINE\SOFTWARE\4shared Desktop\”Install_Dir” = “%ProgramFiles%\4shared Desktop”
  • HKEY_LOCAL_MACHINE\SOFTWARE\4shared Desktop\”AppPath” = “%ProgramFiles%\4shared Desktop\desktop.exe”
  • HKEY_LOCAL_MACHINE\SOFTWARE\4shared Desktop\”Install_Date” = “43675”
  • HKEY_LOCAL_MACHINE\SOFTWARE\4shared Desktop\”Build” = “402”
  • HKEY_LOCAL_MACHINE\SOFTWARE\4shared Desktop\”Source” = “desktop”
  • HKEY_LOCAL_MACHINE\SOFTWARE\4shared Desktop\”Install_Lang” = “1033”

The program displays an end-user license agreement (EULA) after it has been installed.

The program modifies the browser settings to add the following site under allowed notifications:

  • www.4shared.com

The program then displays out-of-context pop-up advertisements on the computer.

 

You may use Anti Virus for this risk.

Before proceeding further we recommend that you run a full system scan

Backdoor.Wellmess

Discovered: November 04, 2019
Updated: November 04, 2019 4:41:36 PM
Infection Length: Varies
Systems Affected: Windows

Backdoor.Wellmess is a Trojan horse that opens a backdoor on the compromised computer.

Technical Description

The malware must be manually installed.

When executed, the malware contacts one or more command and control (C&C) servers for instructions that may include uploading and downloading files, and executing arbitrary commands.

Removal

You may use AntiVirus products for this risk..

Before proceeding further we recommend that you run a full system scan.

Backdoor.Lookback

Discovered: November 03, 2019
Updated: November 04, 2019 4:33:49 PM
Type: Trojan
Infection Length: Varies
Systems Affected: Windows

Backdoor.Lookback is a Trojan horse that opens a backdoor on the compromised computer.

Technical Description

Once executed, the Trojan opens a backdoor on the compromised computer.

The Trojan may then perform malicious activities on the compromised computer.

Recommendations

Secnic Security Response encourages all users and administrators to adhere to the following basic security “best practices”:

  • Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.
  • Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
  • Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.
  • Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.
  • Turn off file sharing if not needed. If file sharing is required, use ACLs and password protection to limit access. Disable anonymous access to shared folders. Grant access only to user accounts with strong passwords to folders that must be shared.
  • Turn off and remove unnecessary services. By default, many operating systems install auxiliary services that are not critical. These services are avenues of attack. If they are removed, threats have less avenues of attack.
  • If a threat exploits one or more network services, disable, or block access to, those services until a patch is applied.
  • Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services.
  • Configure your email server to block or remove email that contains file attachments that are commonly used to spread threats, such as .vbs, .bat, .exe, .pif and .scr files.
  • Isolate compromised computers quickly to prevent threats from spreading further. Perform a forensic analysis and restore the computers using trusted media.
  • Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.
  • If Bluetooth is not required for mobile devices, it should be turned off. If you require its use, ensure that the device’s visibility is set to “Hidden” so that it cannot be scanned by other Bluetooth devices. If device pairing must be used, ensure that all devices are set to “Unauthorized”, requiring authorization for each connection request. Do not accept applications that are unsigned or sent from unknown sources.

Removal

You may use Anti Virus product for this risk.

Before proceeding further we recommend that you run a full system scan.

Ransom.Buran

Discovered: October 23, 2019
Updated: October 30, 2019 8:41:01 AM
Type: Trojan
Infection Length: Varies
Systems Affected: Windows

Ransom.Buran is a Trojan horse that encrypts files on the compromised computer and demands a payment to decrypt them.

Technical Description

Once executed, the Trojan creates the following file:

  • [PATH TO ENCRYPTED FILES]\!!! YOUR FILES ARE ENCRYPTED !!!.TXT

The Trojan creates the following registry entry so that it runs every time Windows starts:

  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\”ctfmon.exe” = “%UserProfile%\Application Data\Microsoft\Windows\ctfmon.exe”

The Trojan also creates the following registry entries:

  • HKEY_CURRENT_USER\Software\Buran\”Knock” = %[HEXADECIMAL VALUE]%
  • HKEY_CURRENT_USER\Software\Buran\Service\”Public” = %[DATA]%
  • HKEY_CURRENT_USER\Software\Buran\Service\”Private” = %[DATA]%

The Trojan connects to the following remote locations:

  • iplo[REMOVED]er.ru
  • iplo[REMOVED]er.org

Next, the Trojan copies itself to the following location:

  • %UserProfile%\Application Data\Microsoft\Windows\ctfmon.exe

The Trojan then encrypts files on the compromised computer.

The Trojan does not encrypt files with the following extensions:

  • cmd
  • com
  • cpl
  • dll
  • msc
  • msp
  • pif
  • scr
  • sys
  • log
  • exe
  • buran

The Trojan does not encrypt files in directories with the following strings:

  • :\$RECYCLE.BIN\
  • :\$Windows.~bt\
  • :\RECYCLER
  • :\System Volume Information\
  • :\Windows.old\
  • :\Windows\
  • :\intel\
  • :\nvidia\
  • :\inetpub\logs\
  • \All Users\
  • \AppData\
  • \Apple Computer\Safari\
  • \Application Data\
  • \Boot\
  • \Google\
  • \Google\Chrome\
  • \Mozilla Firefox\
  • \Mozilla\
  • \Opera Software\
  • \Opera\
  • \Tor Browser\
  • \Common Files\
  • \Internet Explorer\
  • \Windows Defender\
  • \Windows Mail\
  • \Windows Media Player\
  • \Windows Multimedia Platform\
  • \Windows NT\
  • \Windows Photo Viewer\
  • \Windows Portable Devices\
  • \WindowsPowerShell\
  • \Windows Photo Viewer\
  • \Windows Security\
  • \Embedded Lockdown Manager\
  • \Windows Journal\
  • \MSBuild\
  • \Reference Assemblies\
  • \Windows Sidebar\
  • \Windows Defender Advanced Threat Protection\
  • \Microsoft\
  • \Package Cache\
  • \Microsoft Help\

The Trojan does not encrypt files with the following names:

  • boot.ini
  • bootfont.bin
  • bootsect.bak
  • desktop.ini
  • defender.exe
  • iconcache.db
  • master.exe
  • master.dat
  • ntdetect.com
  • ntldr
  • ntuser.dat
  • ntuser.dat.log
  • ntuser.ini
  • temp.txt
  • thumbs.db
  • unlock.exe
  • unlocker.exe
  • !!! YOUR FILES ARE ENCRYPTED !!!.TXT

The Trojan renames encrypted files by appending an ID unique to the compromised computer.

Example: [ORIGINAL FILE NAME].[HEXADECIMAL VALUE]

The Trojan drops the following ransom note in directories where it has encrypted files:

  • [PATH TO ENCRYPTED FILES]\!!! YOUR FILES ARE ENCRYPTED !!!.TXT

The ransom note informs the user their files have been encrypted and provides instructions on how they may pay to have the files decrypted.

Recommendations

Secnic Security Response encourages all users and administrators to adhere to the following basic security “best practices”:

  • Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.
  • Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
  • Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.
  • Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.
  • Turn off file sharing if not needed. If file sharing is required, use ACLs and password protection to limit access. Disable anonymous access to shared folders. Grant access only to user accounts with strong passwords to folders that must be shared.
  • Turn off and remove unnecessary services. By default, many operating systems install auxiliary services that are not critical. These services are avenues of attack. If they are removed, threats have less avenues of attack.
  • If a threat exploits one or more network services, disable, or block access to, those services until a patch is applied.
  • Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services.
  • Configure your email server to block or remove email that contains file attachments that are commonly used to spread threats, such as .vbs, .bat, .exe, .pif and .scr files.
  • Isolate compromised computers quickly to prevent threats from spreading further. Perform a forensic analysis and restore the computers using trusted media.
  • Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.
  • If Bluetooth is not required for mobile devices, it should be turned off. If you require its use, ensure that the device’s visibility is set to “Hidden” so that it cannot be scanned by other Bluetooth devices. If device pairing must be used, ensure that all devices are set to “Unauthorized”, requiring authorization for each connection request. Do not accept applications that are unsigned or sent from unknown sources.

Removal

You may use Anti Virus products about this risk.

Before proceeding further we recommend that you run a full system scan.