What is RAR/Qhost.S infection?

In this article you will certainly discover about the definition of RAR/Qhost.S and also its adverse influence on your computer system. Such ransomware are a form of malware that is clarified by on the internet fraudulences to demand paying the ransom by a sufferer.

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Most of the instances, RAR/Qhost.S ransomware will certainly instruct its victims to initiate funds move for the purpose of reducing the effects of the changes that the Trojan infection has presented to the victim’s device.

RAR/Qhost.S Summary

These alterations can be as adheres to:

  • A named pipe was used for inter-process communication;
  • 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;
  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • Unconventionial language used in binary resources: Russian;
  • Uses Windows utilities for basic functionality;
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • 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 sufferer can no more make use of the information;
  • Preventing normal access to the sufferer’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.


One of the most regular channels where RAR/Qhost.S are infused are:

  • By ways of phishing emails;
  • As an effect of user winding up on a resource that holds a destructive software;

As quickly as the Trojan is effectively infused, it will either cipher the data on the target’s PC or avoid the gadget from working in a correct way – while additionally positioning a ransom money note that states the demand for the targets to effect the payment for the purpose of decrypting the files or recovering the file system back to the first condition. In most instances, the ransom note will come up when the client restarts the PC after the system has actually currently been harmed.

RAR/Qhost.S circulation networks.

In numerous corners of the world, RAR/Qhost.S grows by leaps as well as bounds. Nevertheless, the ransom notes and also tricks of obtaining the ransom money amount might differ depending on particular regional (regional) settings. The ransom money notes and also methods of extorting the ransom money amount might differ depending on certain neighborhood (local) setups.

Ransomware injection

For example:

    Faulty informs regarding unlicensed software application.

    In particular locations, the Trojans commonly wrongfully report having detected some unlicensed applications enabled on the sufferer’s gadget. The alert then demands the user to pay the ransom.

    Faulty declarations concerning illegal content.

    In countries where software piracy is less popular, this technique is not as reliable for the cyber fraudulences. Additionally, the RAR/Qhost.S popup alert may falsely claim to be deriving from a law enforcement institution as well as will certainly report having situated child pornography or various other illegal information on the tool.

    RAR/Qhost.S popup alert might falsely declare to be deriving from a regulation enforcement institution and will report having situated child pornography or other prohibited data on the device. The alert will likewise consist of a need for the user to pay the ransom money.

Technical details

File Info:

crc32: AC90B543
md5: 6378365d017bfb2fcc26956c93424fdf
name: 6378365D017BFB2FCC26956C93424FDF.mlw
sha1: 6f3d957430404334a4e96d45cd19ece075e0d8b1
sha256: d869108c6df95c0e3ff9bdf6a476f28f42d49011b2e1a2470aabaa38ad188b68
sha512: d5a974d3fb31475084bdc4d644b72e62bcc410603ff4736d58a2fd508849e2fc5e33ed30139aa29432503868a8f7399d8a864f8df65fb813b6ae4e2bceb9609b
ssdeep: 12288:TXmwRo+mv8QD4+0N46RdGsoWG4QIZ/wIOlVYZvsjl6eX12sn4qEEN:TX48QE+UlFQbMpd0Tl2uQEN
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Microsoft
FileDescription: Microsoft Visual C++ 2010 x86 Redistibutable 11
FileVersion: System
CompanyName: Microsoft
Translation: 0x0409 0x04e4

RAR/Qhost.S also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
DrWeb Trojan.Hosts.36916
Cynet Malicious (score: 100)
CAT-QuickHeal Trojan.IGENERIC
ALYac Trojan.Generic.17567971
Cylance Unsafe
Sangfor Trojan.Win32.Undefined.8
CrowdStrike win/malicious_confidence_80% (W)
Alibaba Trojan:RAR/Qhost.fe3fae9a
Cybereason malicious.d017bf
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast SFX:Hosts-A [PUP]
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Trojan.Generic.17567971
NANO-Antivirus Trojan.Win32.Hosts.ecnjza
MicroWorld-eScan Trojan.Generic.17567971
Tencent Win32.Trojan.Qhost.Wnmm
Sophos Mal/Generic-S
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Dropper.jc
FireEye Generic.mg.6378365d017bfb2f
Emsisoft Trojan.Generic.17567971 (B)
SentinelOne Static AI – Suspicious PE
Webroot W32.Malware.Heur
eGambit Unsafe.AI_Score_99%
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Program:Win32/Wacapew.C!ml
Arcabit Trojan.Generic.D10C10E3
AegisLab Trojan.Win32.Generic.4!c
GData Trojan.Generic.17567971
McAfee Artemis!6378365D017B
MAX malware (ai score=83)
TrendMicro-HouseCall TROJ_GEN.R002H0CD621
Ikarus Trojan.ScriptKD
MaxSecure Trojan-Ransom.Win32.Crypmod.zfq
Fortinet PossibleThreat
Paloalto generic.ml
Qihoo-360 Generic/Trojan.Generic.HwUBEpsA

How to remove RAR/Qhost.S 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 RAR/Qhost.S 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:

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Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove RAR/Qhost.S you can always ask me in the comments for getting help.

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

About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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