Trojan:Win32/SmokeLoader.GTB!MTB

Written by Robert Bailey
If you spectate the alert of Trojan:Win32/SmokeLoader.GTB!MTB detection, it looks like that your computer has a problem. All malicious programs are dangerous, without any deviations. SmokeLoader provides the crooks access to your computer, or even connects it to the botnet.
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Any kind of malware exists with the only target – gain money on you1. And the developers of these things are not thinking about morality – they utilize all possible tactics. Taking your personal data, receiving the payments for the promotions you watch for them, utilizing your CPU and GPU to mine cryptocurrencies – that is not the full list of what they do. Do you want to be a riding horse? That is a rhetorical question.

What does the pop-up with Trojan:Win32/SmokeLoader.GTB!MTB detection mean?

The Trojan:Win32/SmokeLoader.GTB!MTB detection you can see in the lower right side is displayed to you by Microsoft Defender. That anti-malware application is quite OK at scanning, but prone to be mainly unreliable. It is vulnerable to malware invasions, it has a glitchy user interface and problematic malware clearing features. Thus, the pop-up which states about the SmokeLoader is rather just an alert that Defender has actually found it. To remove it, you will likely need to use a separate anti-malware program.

Trojan:Win32/SmokeLoader.GTB!MTB found

Microsoft Defender: “Trojan:Win32/SmokeLoader.GTB!MTB”

The exact Trojan:Win32/SmokeLoader.GTB!MTB virus is a very unpleasant thing. This malware is developed to be a sneaky burglar, which works as a remote-access tool. When you provide someone remote access willingly, it is OK, however, SmokeLoader will not ask you if you want to grant it. After connecting to your system, crooks are able to do whatever they want – snatching your files, browsing your messages, picking up personal information, and so on. Backdoors commonly bring an additional stealer – the virus that is designed to pick up all available data about you. Nevertheless, far more widespread use of the backdoors is forming the botnet. After that, the network of attacked PCs can be put to use to perform DDoS attacks or to inflate the poll results on different websites.

Backdoor Summary:

NameSmokeLoader Backdoor
DetectionTrojan:Win32/SmokeLoader.GTB!MTB
DamageGain access to the operating system to perform various malicious actions.
SimilarMsil Androme, Lotok, Quasarrat, Asyncrat, Smokeloader, Msil Dcrat, Rewritehttp, Msil Darkcommet
Fix ToolSee If Your System Has Been Affected by SmokeLoader backdoor

Detailed description of SmokeLoader.GTB!MTB

  • Behavioural detection: Executable code extraction – unpacking;
  • Performs HTTP requests potentially not found in PCAP.;
  • Unconventionial language used in binary resources: Georgian;
  • The binary likely contains encrypted or compressed data.;
  • Authenticode signature is invalid;
  • Attempts to modify proxy settings;
Other detection names
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
CAT-QuickHealRansom.Stop.P5
MalwarebytesTrojan.MalPack.GS
SangforTrojan.Win32.Save.a
Cybereasonmalicious.f928a5
CyrenW32/Ransom.QS.gen!Eldorado
SymantecML.Attribute.HighConfidence
tehtrisGeneric.Malware
ESET-NOD32a variant of Win32/Kryptik.HQZE
APEXMalicious
CynetMalicious (score: 100)
KasperskyUDS:Trojan.Win32.Injuke.gen
AvastDropperX-gen [Drp]
EmsisoftTrojan.Crypt (A)
McAfee-GW-EditionBehavesLike.Win32.Packed.fc
Trapminemalicious.high.ml.score
FireEyeGeneric.mg.8b0827e58f7c66a2
SophosGeneric Reputation PUA (PUA)
IkarusTrojan.Win32.Crypt
MicrosoftTrojan:Win32/SmokeLoader.GTB!MTB
GoogleDetected
McAfeeArtemis!8B0827E58F7C
CylanceUnsafe
RisingTrojan.Generic@AI.100 (RDML:OwFnsnxLFQ1hBGiegQKgEQ)
SentinelOneStatic AI – Malicious PE
MaxSecureTrojan.Malware.300983.susgen
FortinetW32/Kryptik.HQZA!tr
AVGDropperX-gen [Drp]
CrowdStrikewin/malicious_confidence_100% (W)
Shortly about backdoors

Backdoors are viruses that can obtain both separated and built-in shapes. Once you can uncover that a legit program from a famous developer has a functionality that allows someone to connect to your system. Will it be someone from the creators or a 3rd party – no one knows. But the scandal when this thing is uncovered in an official program is nearly impossible to miss. There is also gossip that there is a hardware-based backdoor in Intel CPUs2.

Is Trojan:Win32/SmokeLoader.GTB!MTB dangerous?

As I have mentioned previously, non-harmful malware does not exist. And Trojan:Win32/SmokeLoader.GTB!MTB is not an exclusion. This backdoor does not deal a lot of harm just after it introduces. However, it will likely be a very bad surprise when a random forum or website in the Web will not let you in, since your IP-address is disallowed after the DDoS attack. But even if it is not crucial for you – is it good at all to realise that somebody can easily access your computer, check out your discussions, open your documents, and spectate what you do?

The spyware that is usually present as a supplement to the Trojan:Win32/SmokeLoader.GTB!MTB virus will be just an additional reason to remove it as fast as you can. Nowadays, when users’ data is valued remarkably high, it is too illogical to give the burglars such a possibility. Even worse if the spyware will in some way manage to steal your banking information. Seeing 0 on your bank account is the worst problem, in my thoughts.

How did I get this virus?

It is not easy to trace the sources of malware on your PC. Nowadays, things are mixed up, and distribution ways utilized by adware 5 years ago may be used by spyware these days. But if we abstract from the exact spreading way and will think of why it works, the reply will be quite basic – low level of cybersecurity awareness. People press on promotions on odd websites, open the pop-ups they receive in their browsers, call the “Microsoft tech support” assuming that the strange banner that says about malware is true. It is necessary to know what is legit – to stay away from misconceptions when attempting to determine a virus.

Microsoft Tech Support Scam

Microsoft Tech Support Scam

Nowadays, there are two of the most widespread methods of malware spreading – lure emails and also injection into a hacked program. While the first one is not so easy to evade – you need to know a lot to recognize a counterfeit – the 2nd one is easy to address: just don’t use cracked apps. Torrent-trackers and other sources of “free” applications (which are, actually, paid, but with a disabled license checking) are really a giveaway place of malware. And Trojan:Win32/SmokeLoader.GTB!MTB is simply within them.

How to remove the Trojan:Win32/SmokeLoader.GTB!MTB from my PC?

Trojan:Win32/SmokeLoader.GTB!MTB malware is very difficult to eliminate by hand. It places its documents in several places throughout the disk, and can recover itself from one of the elements. In addition, a range of changes in the registry, networking configurations and Group Policies are really hard to identify and return to the initial. It is much better to make use of a specific program – exactly, an anti-malware program. GridinSoft Anti-Malware will definitely fit the best for virus removal reasons.

Why GridinSoft Anti-Malware? It is pretty lightweight and has its databases updated almost every hour. In addition, it does not have such problems and weakness as Microsoft Defender does. The combination of these facts makes GridinSoft Anti-Malware ideal for taking out malware of any form.

Remove the viruses with GridinSoft Anti-Malware

  • Download and install GridinSoft Anti-Malware. After the installation, you will be offered to perform the Standard Scan. Approve this action.
  • Gridinsoft Anti-Malware during the scan process

  • Standard scan checks the logical disk where the system files are stored, together with the files of programs you have already installed. The scan lasts up to 6 minutes.
  • GridinSoft Anti-Malware scan results

  • When the scan is over, you may choose the action for each detected virus. For all files of SmokeLoader the default option is “Delete”. Press “Apply” to finish the malware removal.
  • GridinSoft Anti-Malware - After Cleaning
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References

  1. Read about malware types on GridinSoft Threat encyclopedia.
  2. Gossip about the backdoor in Intel processors on Reddit.

About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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