Backdoor.SlimRat

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

What is Backdoor.SlimRat infection?

In this post you will locate concerning the interpretation of Backdoor.SlimRat as well as its adverse effect on your computer system. Such ransomware are a form of malware that is elaborated by on-line scams to demand paying the ransom money by a target.

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Most of the instances, Backdoor.SlimRat infection will certainly instruct its targets to start funds move for the purpose of reducing the effects of the amendments that the Trojan infection has introduced to the sufferer’s gadget.

Backdoor.SlimRat Summary

These alterations can be as follows:

  • Executable code extraction. Cybercriminals often use binary packers to hinder the malicious code from reverse-engineered by malware analysts. A packer is a tool that compresses, encrypts, and modifies a malicious file’s format. Sometimes packers can be used for legitimate ends, for example, to protect a program against cracking or copying.
  • Attempts to connect to a dead IP:Port (1 unique times);
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • A process created a hidden window;
  • Uses Windows utilities for basic functionality;
  • A process attempted to delay the analysis task by a long amount of time.;
  • Installs itself for autorun at Windows startup.

    There is simple tactic using the Windows startup folder located at:
    C:\Users\[user-name]\AppData\Roaming\Microsoft\Windows\StartMenu\Programs\Startup Shortcut links (.lnk extension) placed in this folder will cause Windows to launch the application each time [user-name] logs into Windows.

    The registry run keys perform the same action, and can be located in different locations:

    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • Attempts to identify installed AV products by installation directory;
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the documents located on the sufferer’s hard disk — so the victim can no longer use the data;
  • Preventing regular accessibility to the victim’s workstation;
Similar behavior
Related domains
z.whorecord.xyz TrojanRansom.Blocker
a.tomx.xyz TrojanRansom.Blocker
www.daiman.nl TrojanRansom.Blocker

Backdoor.SlimRat

The most common channels whereby Backdoor.SlimRat are infused are:

  • By ways of phishing e-mails;
  • As a repercussion of individual winding up on a resource that holds a malicious software program;

As quickly as the Trojan is efficiently injected, it will either cipher the information on the victim’s computer or protect against the tool from functioning in a correct fashion – while additionally positioning a ransom note that discusses the requirement for the sufferers to effect the payment for the purpose of decrypting the documents or recovering the documents system back to the preliminary problem. In the majority of instances, the ransom note will turn up when the client restarts the COMPUTER after the system has already been damaged.

Backdoor.SlimRat distribution channels.

In different corners of the world, Backdoor.SlimRat expands by leaps and also bounds. Nevertheless, the ransom money notes as well as tricks of obtaining the ransom amount might differ depending on certain neighborhood (regional) setups. The ransom notes as well as tricks of obtaining the ransom amount may vary depending on specific local (regional) setups.

Ransomware injection

As an example:

    Faulty alerts about unlicensed software program.

    In specific areas, the Trojans usually wrongfully report having actually found some unlicensed applications allowed on the target’s tool. The alert after that requires the customer to pay the ransom money.

    Faulty declarations about illegal material.

    In nations where software piracy is less popular, this approach is not as efficient for the cyber fraudulences. Conversely, the Backdoor.SlimRat popup alert may falsely claim to be stemming from a police institution as well as will report having located child porn or other illegal data on the gadget.

    Backdoor.SlimRat popup alert may wrongly claim to be obtaining from a regulation enforcement institution as well as will certainly report having situated kid porn or various other prohibited data on the gadget. The alert will similarly contain a need for the customer to pay the ransom.

Technical details

File Info:

crc32: A8BEC723
md5: 9fd436d3e2d933e96eabea38e0c5aca6
name: avira_av.exe
sha1: e9f26cfb96a23da3305f7c7626eae8b6f76cf5fc
sha256: a1e0799365123c203abda5e44e6687d14f7bee6aac13495442ac0ef72f9fc99b
sha512: 5900107d429df9df65242a46ea0179b415b3b079c5e8e181c3997b9175ee664810c69aaa980175807c20a99b1db3db6360708ebfef028550aa582c5808cdd31b
ssdeep: 3072:m9RxgFm76kbaruF1PcEm4cjBS77I0T4UJ2jGZcorc:qHyWcE1q477I0T4UJ2jGZX
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

Translation: 0x0409 0x04b0
InternalName: avira_av
FileVersion: 1.00
CompanyName: BKHN
ProductName: Project1
ProductVersion: 1.00
OriginalFilename: avira_av.exe

Backdoor.SlimRat also known as:

GridinSoft Trojan.Ransom.Gen
MicroWorld-eScan Generic.Malware.SFP!V!A!Tk.32DB2068
FireEye Generic.mg.9fd436d3e2d933e9
CAT-QuickHeal TrojanRansom.Blocker
McAfee RDN/Generic BackDoor
Malwarebytes Backdoor.SlimRat
VIPRE Backdoor.Win32.Retig.de (v)
Sangfor Malware
K7AntiVirus Trojan ( 005173c61 )
BitDefender Generic.Malware.SFP!V!A!Tk.32DB2068
K7GW Trojan ( 005173c61 )
Cybereason malicious.3e2d93
TrendMicro Ransom_Blocker.R035C0PKN19
BitDefenderTheta AI:Packer.B94DFC8D1F
Symantec ML.Attribute.HighConfidence
TrendMicro-HouseCall Ransom_Blocker.R035C0PKN19
Avast Win32:Trojan-gen
ClamAV Win.Trojan.VB-989
GData Generic.Malware.SFP!V!A!Tk.32DB2068
Kaspersky Trojan-Ransom.Win32.Blocker.mfam
Alibaba Backdoor:Win32/Generic.ed65ba71
NANO-Antivirus Trojan.Win32.Ric.gixrmd
AegisLab Trojan.Win32.Generic.4!c
Rising Trojan.Generic!8.C3 (TFE:5:A8wpwXNVdzO)
Endgame malicious (high confidence)
Sophos Mal/Generic-S
F-Secure Trojan.TR/Spy.Gen
DrWeb BACKDOOR.Trojan
McAfee-GW-Edition RDN/Generic BackDoor
SentinelOne DFI – Malicious PE
Emsisoft Generic.Malware.SFP!V!A!Tk.32DB2068 (B)
Avira TR/Spy.Gen
Antiy-AVL Trojan[Ransom]/Win32.Blocker
Microsoft Trojan:Win32/Tiggre!rfn
Arcabit Generic.Malware.SFP!V!A!Tk.32DB2068
ZoneAlarm Trojan-Ransom.Win32.Blocker.mfam
AhnLab-V3 Trojan/Win32.Blocker.R302842
ALYac Generic.Malware.SFP!V!A!Tk.32DB2068
MAX malware (ai score=82)
Ad-Aware Generic.Malware.SFP!V!A!Tk.32DB2068
Cylance Unsafe
Panda Trj/GdSda.A
ESET-NOD32 a variant of NewHeur_VB_Backdoor.4
Ikarus Backdoor.Win32.RShot
Fortinet W32/Blocker.MFAM!tr
AVG Win32:Trojan-gen
Paloalto generic.ml
CrowdStrike win/malicious_confidence_100% (W)
Qihoo-360 Win32/Trojan.Ransom.52b

How to remove Backdoor.SlimRat 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

The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

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.SlimRat 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.SlimRat 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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