Avoid installation of SDBbot remote access trojan

Also Known As: SDBbot remote access trojan
Type: Trojan
Distribution: Low
Damage level: Severe

SDBbot virus removal guide

What is SDBbot?

SDBbot is the name of a remote access trojan (RAT). Typically, cyber criminals try to infect computers it software of this type so they could control them remotely and perform various actions. In most cases they use them to steal sensitive information and/or infect computers with additional malware. This particular RAT can be used to control computer remotely: run shell commands, record screen and access file system. Either way, having software like SDBbot installed can cause serious problems.

SDBbot malware

SDBbot is written in C++ programming language, it is created of three components: installer, loader and RAT component. The installer component is responsible for establishing persistence for the loader component. It also places the RAT in the system's registry, it creates a new registry value. However, a system reboot/restart is required in order for the installer to be able to continue executing the loader and RAT. Then the loader component starts executing its shell code which decompresses the remote access trojan component and executes its DLL file. Installed SDBbot sends information and receives commands via C&C (Command and Control) server. It collects basic system information such as computer name, geolocation (country code), operating system version, user rights, domain name and proxy configuration. Cyber criminals can use SDBbot to run the Windows PowerShell and then execute various commands through it. For example, they can restart the operating system, shut it down, set sleep time, receive existing or create new videos (or screenshots), and so on. Also, it can read, write and delete files, create directories, write commands to shell and perform other actions. Accessed files might contain sensitive information that could be misused to generate revenue. Recorded videos or/and taken screenshots might contain sensitive information or be used to blackmail victims in one or another way. Written commands might be used to infect computers with additional malware that could be designed to steal personal details, encrypt files, and so on. There are many commands that could be used to damage systems or/and cause victims problems related to finances, privacy, etc. If there is a reason to think that a computer is infected with SDBbot, then this remote access trojan should be eliminated as soon as possible.

Threat Summary:
Name SDBbot remote access trojan
Threat Type Remote Access Trojan
Detection Names (Business Cloud Invoice No142 09-09-2019.xls) Avast (Other:Malware-gen [Trj]), BitDefender (Trojan.GenericKD.32441155), ESET-NOD32 (VBA/TrojanDropper.Agent.AKP), Kaspersky (HEUR:Trojan-Dropper.MSOffice.Agent.gen), Full List (VirusTotal)
Payload SDBbot could be used to spread various different malware.
Symptoms Trojans are designed to stealthily infiltrate the victim's computer and remain silent, and thus no particular symptoms are clearly visible on an infected machine.
Distribution methods Infected email attachments (MS Office documents), malicious online advertisements, social engineering, software 'cracks'.
Damage Stolen passwords and banking information, identity theft, the victim's computer added to a botnet.
Removal

To eliminate SDBbot remote access trojan our malware researchers recommend scanning your computer with Spyhunter.
▼ Download Spyhunter
Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

More examples of programs that are categorized as RATs too are BlackRemote, DarkRAT, and InnfiRAT. As we mentioned in the introduction, programs of this type are often used by cyber criminals who try to spread various malware, steal confidential information, or control systems in other ways that could help them to generate revenue in one or another way.

How did SDBbot infiltrate my computer?

Research shows that at first cyber criminals distributed SDBbot through spam campaigns, emails that contained malicious Microsoft Office documents. Typically, malicious documents infect systems when recipients open them and enable macros commands/content. Screenshots of examples of those documents are provided below. If those documents were allowed to enable macros commands, they downloaded Get2 downloader that was designed to spread SDBbot and other malware such as FlawedGrace, FlawedAmmyy and Snatch. The latest spam campaigns deliver shortened URLs, instead of directly attaching the malicious MS Office attachments. However, the ultimate result is still exactly the same, since delivered URLs lead to download pages of malicious documents.

How to avoid installation of malware?

We advise to be careful with attachments (or web links) that are included in irrelevant emails that are received from unknown, suspicious addresses. Typically, these emails and/or files attached to them are disguised as official, important, etc. However, very often opening them leads to installation of malware. Software cracking tools that supposed to activate software for free should not be used as well, they are not legal and often designed to install malicious software. Installed software should be updated using implemented functions or tools that are provided by official software developers. Third party updaters can be used to distribute malware too (they exploit bugs of outdated software or simply install malware instead of updating programs). The best way to download software is using official websites, and not some torrent clients, eMule (or other Peer-to-Peer networks), unofficial pages, third party downloaders and other channels of this kind. It is highly recommended to have a reputable anti-virus or anti-spyware software installed, scan system with it regularly and remove detected threats as soon as possible. If you believe that your computer is already infected, we recommend running a scan with Spyhunter for Windows to automatically eliminate infiltrated malware.

Malicious attachments that are used to distribute SDBbot:

malicious MS Office document that installs SDBbot malicious MS Office document that installs SDBbot 2 malicious MS Office document that installs SDBbot 3

 

Instant automatic removal of SDBbot remote access trojan: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Spyhunter is a professional automatic malware removal tool that is recommended to get rid of SDBbot remote access trojan. Download it by clicking the button below:
▼ DOWNLOAD Spyhunter By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

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How to remove malware manually?

Manual malware removal is a complicated task - usually it is best to allow antivirus or anti-malware programs to do this automatically. To remove this malware we recommend using Spyhunter for Windows. If you wish to remove malware manually, the first step is to identify the name of the malware that you are trying to remove. Here is an example of a suspicious program running on a user's computer:

malicious process running on user's computer sample

If you checked the list of programs running on your computer, for example, using task manager, and identified a program that looks suspicious, you should continue with these steps:

manual malware removal step 1Download a program called Autoruns. This program shows auto-start applications, Registry, and file system locations:

screenshot of autoruns application

manual malware removal step 2Restart your computer into Safe Mode:

Windows XP and Windows 7 users: Start your computer in Safe Mode. Click Start, click Shut Down, click Restart, click OK. During your computer start process, press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, and then select Safe Mode with Networking from the list.

Safe Mode with Networking

Video showing how to start Windows 7 in "Safe Mode with Networking":

Windows 8 users: Start Windows 8 is Safe Mode with Networking - Go to Windows 8 Start Screen, type Advanced, in the search results select Settings. Click Advanced startup options, in the opened "General PC Settings" window, select Advanced startup. Click the "Restart now" button. Your computer will now restart into the "Advanced Startup options menu". Click the "Troubleshoot" button, and then click the "Advanced options" button. In the advanced option screen, click "Startup settings". Click the "Restart" button. Your PC will restart into the Startup Settings screen. Press F5 to boot in Safe Mode with Networking.

Windows 8 Safe Mode with networking

Video showing how to start Windows 8 in "Safe Mode with Networking":

Windows 10 users: Click the Windows logo and select the Power icon. In the opened menu click "Restart" while holding "Shift" button on your keyboard. In the "choose an option" window click on the "Troubleshoot", next select "Advanced options". In the advanced options menu select "Startup Settings" and click on the "Restart" button. In the following window you should click the "F5" button on your keyboard. This will restart your operating system in safe mode with networking.

windows 10 safe mode with networking

Video showing how to start Windows 10 in "Safe Mode with Networking":

 

manual malware removal step 3Extract the downloaded archive and run the Autoruns.exe file.

extract autoruns.zip and run autoruns.exe

manual malware removal step 4In the Autoruns application, click "Options" at the top and uncheck "Hide Empty Locations" and "Hide Windows Entries" options. After this procedure, click the "Refresh" icon.

Click 'Options' at the top and uncheck 'Hide Empty Locations' and 'Hide Windows Entries' options

manual malware removal step 5Check the list provided by the Autoruns application and locate the malware file that you want to eliminate.

You should write down its full path and name. Note that some malware hides process names under legitimate Windows process names. At this stage, it is very important to avoid removing system files. After you locate the suspicious program you wish to remove, right click your mouse over its name and choose "Delete".

locate the malware file you want to remove

After removing the malware through the Autoruns application (this ensures that the malware will not run automatically on the next system startup), you should search for the malware name on your computer. Be sure to enable hidden files and folders before proceeding. If you find the filename of the malware, be sure to remove it.

searching for malware file on your computer

Reboot your computer in normal mode. Following these steps should remove any malware from your computer. Note that manual threat removal requires advanced computer skills. If you do not have these skills, leave malware removal to antivirus and anti-malware programs. These steps might not work with advanced malware infections. As always it is best to prevent infection than try to remove malware later. To keep your computer safe, install the latest operating system updates and use antivirus software.

To be sure your computer is free of malware infections, we recommend scanning it with Spyhunter for Windows.

About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Malware activity

Global virus and spyware activity level today:

Medium threat activity
Medium

Increased attack rate of infections detected within the last 24 hours.

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Platform: Windows

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