Backdoor.Agent.STB

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is Backdoor.Agent.STB infection?

In this post you will certainly discover about the interpretation of Backdoor.Agent.STB as well as its adverse influence on your computer. Such ransomware are a form of malware that is specified by on-line fraudulences to require paying the ransom money by a target.

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In the majority of the cases, Backdoor.Agent.STB infection will instruct its targets to start funds transfer for the function of neutralizing the modifications that the Trojan infection has introduced to the victim’s gadget.

Backdoor.Agent.STB Summary

These alterations can be as adheres to:

  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records found on the victim’s disk drive — so the target can no more use the information;
  • Preventing routine access to the victim’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.

Backdoor.Agent.STB

One of the most typical channels whereby Backdoor.Agent.STB are infused are:

  • By ways of phishing e-mails;
  • As a repercussion of customer winding up on a resource that hosts a malicious software application;

As quickly as the Trojan is effectively infused, it will either cipher the data on the target’s computer or avoid the tool from working in an appropriate manner – while additionally placing a ransom money note that discusses the requirement for the victims to effect the settlement for the objective of decrypting the files or recovering the file system back to the first condition. In the majority of instances, the ransom money note will come up when the customer reboots the COMPUTER after the system has currently been damaged.

Backdoor.Agent.STB circulation networks.

In numerous corners of the globe, Backdoor.Agent.STB grows by leaps and bounds. However, the ransom notes and also methods of extorting the ransom quantity might vary relying on certain regional (local) setups. The ransom notes as well as methods of extorting the ransom money amount may differ depending on certain regional (regional) setups.

Ransomware injection

As an example:

    Faulty signals concerning unlicensed software.

    In particular locations, the Trojans frequently wrongfully report having found some unlicensed applications enabled on the target’s device. The alert after that requires the user to pay the ransom money.

    Faulty declarations about illegal material.

    In countries where software application piracy is much less popular, this method is not as effective for the cyber scams. Conversely, the Backdoor.Agent.STB popup alert might wrongly declare to be originating from a law enforcement organization as well as will certainly report having situated youngster porn or various other prohibited information on the gadget.

    Backdoor.Agent.STB popup alert might falsely declare to be deriving from a law enforcement establishment and will report having located youngster pornography or other prohibited information on the gadget. The alert will in a similar way consist of a need for the customer to pay the ransom.

Technical details

File Info:

crc32: 509E162B
md5: 6e7e08e45de22a6d726dc5222f9a91ff
name: 6E7E08E45DE22A6D726DC5222F9A91FF.mlw
sha1: c7c0d75e85c7a2369691e7411ae4beb94166fddd
sha256: f1c88cd046b0ca224a1867d76d75a0e5e64db16c4f679578a3f1ded63f0872dc
sha512: 619f015ed4ac98a66f70539038ad9ff1026f5f6de33d0a61ef4a17915e1073253c06056c789b01d89f81bbbcb138f7f79a9c2842afacd35c927ad9ea7137deb4
ssdeep: 3072:/aObYrSD4kjua2DH4xWe5GWp1icKAArDZz4N9GhbkrNEk1ErhxQ7PW:/aKMSD4Yuaesp0yN90QEXhq6
type: PE32+ executable (GUI) x86-64, for MS Windows

Version Info:

LegalCopyright: xa9 Microsoft Corporation. All rights reserved.
InternalName: Wextract
FileVersion: 8.00.7600.16385 (win7_rtm.090713-1255)
CompanyName: Microsoft Corporation
ProductName: Windowsxae Internet Explorer
ProductVersion: 8.00.7600.16385
FileDescription: Win32 Cabinet Self-Extractor
OriginalFilename: WEXTRACT.EXE .MUI
Translation: 0x0409 0x04b0

Backdoor.Agent.STB also known as:

GridinSoftTrojan.Ransom.Gen
Elasticmalicious (high confidence)
DrWebBackDoor.Comet.152
FireEyeGeneric.mg.6e7e08e45de22a6d
McAfeeArtemis!6E7E08E45DE2
CylanceUnsafe
VIPRETrojan.Win32.Generic!BT
AegisLabTrojan.Win32.Blocker.j!c
SangforRansom.Win32.Blocker.8
Cybereasonmalicious.45de22
SymantecTrojan.Gen
ESET-NOD32multiple detections
APEXMalicious
TotalDefenseWin32/Tnega.XARZ!suspicious
AvastMSIL:Agent-ACX [Trj]
KasperskyTrojan-Ransom.Win32.Blocker.erif
NANO-AntivirusTrojan.Win32.Krolol.dchiwh
TencentTrojan-Ransom.Win32.Blocker.a
ComodoMalware@#jsg141blnkb2
F-SecureTrojan.TR/ATRAPS.Gen
BaiduWin32.Trojan-Dropper.Agent.ca
TrendMicroRansom_Blocker.R002C0OL520
McAfee-GW-EditionGenericRXEC-BU!8E0554D92A78
SentinelOneStatic AI – Malicious SFX
eGambitUnsafe.AI_Score_93%
AviraTR/ATRAPS.Gen
Antiy-AVLTrojan[Ransom]/Win32.Blocker
KingsoftWin32.Troj.Undef.(kcloud)
MicrosoftTrojan:Win32/Wacatac.B!ml
ZoneAlarmTrojan-Ransom.Win32.Blocker.erif
GDataWin32.Trojan-Dropper.BeiF.A
CynetMalicious (score: 100)
MalwarebytesBackdoor.Agent.STB
PandaTrj/CI.A
TrendMicro-HouseCallRansom_Blocker.R002C0OL520
RisingRansom.Blocker!8.12A (CLOUD)
YandexTrojan.Blocker!om7bUCdSlWg
IkarusWorm.MSIL.Agent
FortinetMSIL/Agent.EZ!worm
AVGMSIL:Agent-ACX [Trj]
Paloaltogeneric.ml
CrowdStrikewin/malicious_confidence_80% (D)
Qihoo-360Win32/Trojan.Ransom.777

How to remove Backdoor.Agent.STB ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
Reasons why I would recommend GridinSoft1

There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft2.

Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

Run the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-fix.exe file to install GridinSoft Anti-Malware on your system.

Run Setup.exe

An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.

GridinSoft Anti-Malware Setup

Press “Install” button.

GridinSoft Anti-Malware Install

Once installed, Anti-Malware will automatically run.

GridinSoft Anti-Malware Splash-Screen

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Backdoor.Agent.STB files and other malicious programs. This process can take a 20-30 minutes, so I suggest you periodically check on the status of the scan process.

GridinSoft Anti-Malware Scanning

Click on “Clean Now”.

When the scan has finished, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

GridinSoft Anti-Malware will scan and clean your PC for free in the trial period. The free version offer real-time protection for first 2 days. If you want to be fully protected at all times – I can recommended you to purchase a full version:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Backdoor.Agent.STB you can always ask me in the comments for getting help.

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References

  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  2. More information about GridinSoft products: https://gridinsoft.com/comparison

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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