BAT/Qhost.NEM

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

What is BAT/Qhost.NEM infection?

In this post you will certainly discover concerning the definition of BAT/Qhost.NEM as well as its adverse effect on your computer system. Such ransomware are a form of malware that is elaborated by on the internet frauds to require paying the ransom by a victim.

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In the majority of the cases, BAT/Qhost.NEM ransomware will certainly advise its targets to start funds transfer for the purpose of counteracting the amendments that the Trojan infection has presented to the target’s tool.

BAT/Qhost.NEM Summary

These adjustments can be as follows:

  • Possible date expiration check, exits too soon after checking local time;
  • Creates RWX memory. There is a security trick with memory regions that allows an attacker to fill a buffer with a shellcode and then execute it. Filling a buffer with shellcode isn’t a big deal, it’s just data. The problem arises when the attacker is able to control the instruction pointer (EIP), usually by corrupting a function’s stack frame using a stack-based buffer overflow, and then changing the flow of execution by assigning this pointer to the address of the shellcode.
  • A process attempted to delay the analysis task.;
  • 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.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • The executable is compressed using UPX;
  • Uses Windows utilities for basic functionality;
  • 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 interact with an Alternate Data Stream (ADS);
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the records situated on the victim’s hard disk drive — so the victim can no more make use of the information;
  • Preventing regular 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.

BAT/Qhost.NEM

One of the most typical channels where BAT/Qhost.NEM Trojans are infused are:

  • By ways of phishing e-mails;
  • As a repercussion of individual ending up on a source that holds a malicious software application;

As quickly as the Trojan is successfully infused, it will either cipher the data on the victim’s PC or stop the gadget from functioning in an appropriate fashion – while additionally putting a ransom note that points out the need for the victims to impact the payment for the purpose of decrypting the papers or bring back the documents system back to the initial problem. In most instances, the ransom note will turn up when the customer restarts the COMPUTER after the system has currently been harmed.

BAT/Qhost.NEM circulation networks.

In various edges of the globe, BAT/Qhost.NEM expands by jumps and bounds. Nevertheless, the ransom notes as well as tricks of obtaining the ransom money amount may differ depending upon particular regional (regional) settings. The ransom money notes and also methods of extorting the ransom money quantity might differ depending on specific local (regional) setups.

Ransomware injection

For instance:

    Faulty informs regarding unlicensed software program.

    In specific areas, the Trojans commonly wrongfully report having actually identified some unlicensed applications made it possible for on the victim’s device. The sharp then requires the user to pay the ransom money.

    Faulty declarations regarding prohibited content.

    In nations where software program piracy is less popular, this approach is not as reliable for the cyber frauds. Additionally, the BAT/Qhost.NEM popup alert might incorrectly declare to be deriving from a law enforcement institution and will report having located kid pornography or various other unlawful data on the tool.

    BAT/Qhost.NEM popup alert may wrongly declare to be acquiring from a law enforcement organization and will certainly report having located child porn or various other prohibited data on the gadget. The alert will likewise consist of a requirement for the user to pay the ransom.

Technical details

File Info:

crc32: C172BC53
md5: 2c79aa60123e6b2766c5076b720f22bd
name: 2C79AA60123E6B2766C5076B720F22BD.mlw
sha1: 7924c04b422b7ef0e74f87be0a54c39f1317bc77
sha256: 01944ef0d8f956d1742764afa99110d5e455e96dab0cc16effcfb768802c23a8
sha512: 54e9fdf2db8c4bac62e8797c422e8ddbf08c166aeb78c25b6fa37ee1f0d6785c88b1c44cebc3a4a687733fd9ee314cc18ed2728535a51f5ae5bf1f481d9e9c93
ssdeep: 12288:jcYEeMMJ8dVC5kMrxhxDu1QJ5cXnRo1B0Kdwtq9PJB/V1DxoS:jcJX0CC57Bu2J5cBo1B0KTJ/D
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

FileVersion: 1,0,0,0
ProductVersion: 1,0,0,0
Translation: 0x0000 0x04e4

BAT/Qhost.NEM also known as:

GridinSoftTrojan.Ransom.Gen
K7AntiVirusTrojan ( 004bfcbe1 )
ALYacTrojan.Generic.8534726
K7GWTrojan ( 004bfcbe1 )
Cybereasonmalicious.0123e6
SymantecML.Attribute.HighConfidence
ESET-NOD32BAT/Qhost.NEM
APEXMalicious
AvastWin32:Malware-gen
KasperskyTrojan-Ransom.Win32.Blocker.lbxn
BitDefenderTrojan.Generic.8534726
NANO-AntivirusTrojan.Win32.Agent.yriaz
MicroWorld-eScanTrojan.Generic.8534726
TencentWin32.Trojan.Blocker.Htcr
Ad-AwareTrojan.Generic.8534726
SophosMal/Generic-S
ComodoMalware@#1d7dczorci7rq
VIPRETrojan.Win32.Generic!BT
McAfee-GW-EditionBehavesLike.Win32.Dropper.jc
FireEyeGeneric.mg.2c79aa60123e6b27
EmsisoftTrojan.Generic.8534726 (B)
SentinelOneStatic AI – Suspicious PE
JiangminTrojan/Gimemo.cgt
KingsoftWin32.Troj.Generic.v.(kcloud)
ArcabitTrojan.Generic.D823AC6
AegisLabTrojan.Win32.Generic.4!c
GDataTrojan.Generic.8534726
McAfeeArtemis!2C79AA60123E
MAXmalware (ai score=99)
VBA32Hoax.Gimemo
RisingWorm.Pahooka!1.BC8B (CLASSIC)
YandexTrojan.LockScreen!sngH0yLOXEs
IkarusTrojan.Win32.LockScreen
MaxSecureTrojan.Malware.300983.susgen
AVGWin32:Malware-gen
Paloaltogeneric.ml

How to remove BAT/Qhost.NEM virus?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
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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 BAT/Qhost.NEM 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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If the guide doesn’t help you to remove BAT/Qhost.NEM 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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