Backdoor:Win32/PcClient.ZR

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

What is Backdoor:Win32/PcClient.ZR infection?

In this article you will certainly find regarding the interpretation of Backdoor:Win32/PcClient.ZR and its adverse impact on your computer system. Such ransomware are a form of malware that is elaborated by online scams to demand paying the ransom by a target.

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In the majority of the situations, Backdoor:Win32/PcClient.ZR infection will advise its victims to initiate funds transfer for the purpose of neutralizing the amendments that the Trojan infection has presented to the victim’s tool.

Backdoor:Win32/PcClient.ZR Summary

These alterations can be as complies with:

  • A process attempted to delay the analysis task.;
  • 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.

  • Unconventionial language used in binary resources: Chinese (Simplified);
  • Deletes its original binary from disk;
  • Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
  • 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
  • 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.
  • Creates known PcClient mutex and/or file changes.;
  • Ciphering the documents located on the sufferer’s hard drive — so the target can no longer make use of the data;
  • Preventing regular accessibility to the sufferer’s workstation;

Backdoor:Win32/PcClient.ZR

One of the most common networks where Backdoor:Win32/PcClient.ZR Trojans are injected are:

  • By means of phishing emails;
  • As a consequence of user winding up on a source that holds a harmful software;

As quickly as the Trojan is efficiently infused, it will either cipher the data on the sufferer’s computer or prevent the tool from working in an appropriate manner – while likewise positioning a ransom money note that mentions the demand for the victims to effect the payment for the function of decrypting the files or recovering the documents system back to the preliminary problem. In most circumstances, the ransom money note will certainly turn up when the client reboots the COMPUTER after the system has already been damaged.

Backdoor:Win32/PcClient.ZR circulation channels.

In numerous corners of the world, Backdoor:Win32/PcClient.ZR grows by jumps and bounds. However, the ransom notes and also techniques of extorting the ransom amount may vary depending upon certain local (local) setups. The ransom notes and also methods of extorting the ransom money quantity may vary depending on specific regional (local) setups.

Ransomware injection

As an example:

    Faulty informs about unlicensed software.

    In certain areas, the Trojans often wrongfully report having spotted some unlicensed applications allowed on the sufferer’s device. The sharp then requires the user to pay the ransom.

    Faulty statements regarding illegal material.

    In nations where software program piracy is less popular, this technique is not as reliable for the cyber fraudulences. Conversely, the Backdoor:Win32/PcClient.ZR popup alert may wrongly assert to be deriving from a police organization and also will report having located child pornography or various other prohibited data on the device.

    Backdoor:Win32/PcClient.ZR popup alert might wrongly claim to be obtaining from a law enforcement organization and also will report having situated kid pornography or various other unlawful data on the device. The alert will similarly consist of a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: DA655489
md5: 33c96fba8a4ee51caa0ad5ae555bd7e9
name: 33C96FBA8A4EE51CAA0AD5AE555BD7E9.mlw
sha1: 2ad46191d77619eadae4060c3a9733043fd792d9
sha256: d8b1a7ae4bf11672372f961e50ae950fd6aedb050bf2f261ffd573e8b400ad99
sha512: a2d499afb02e40e92baad8c5112269869084571e2b7d32f2ad147fdf8dd8da53f25c4087019570d3c9e882fc925d6017c3a32923bc07121540a28602e9df734e
ssdeep: 6144:+K2F4115j5P/axv5JTPm1xgEg4EcB/guREPcyKdU:l115j532OjgvcRgsJyKdU
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Backdoor:Win32/PcClient.ZR also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
CynetMalicious (score: 100)
ALYacGen:Variant.Ransom.Cerber.171
CylanceUnsafe
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_70% (D)
Cybereasonmalicious.a8a4ee
CyrenW32/OnlineGames.BW.gen!Eldorado
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of Win32/Dialer.NEW
APEXMalicious
AvastWin32:Malware-gen
ClamAVWin.Trojan.Farfli-9754465-0
KasperskyHEUR:Trojan.Win32.Generic
BitDefenderGen:Variant.Ransom.Cerber.171
MicroWorld-eScanGen:Variant.Ransom.Cerber.171
Ad-AwareGen:Variant.Ransom.Cerber.171
SophosML/PE-A + Mal/Redos-H
BitDefenderThetaAI:Packer.E690EF151F
VIPRETrojan.Win32.Redosdru.C (v)
McAfee-GW-EditionBehavesLike.Win32.Backdoor.dh
FireEyeGeneric.mg.33c96fba8a4ee51c
EmsisoftGen:Variant.Ransom.Cerber.171 (B)
SentinelOneStatic AI – Malicious PE
AviraBDS/Backdoor.Gen
eGambitTrojan.Generic
MicrosoftBackdoor:Win32/PcClient.ZR
ZoneAlarmHEUR:Trojan.Win32.Generic
GDataGen:Variant.Ransom.Cerber.171
AhnLab-V3Malware/Win32.RL_Generic.R358321
Acronissuspicious
McAfeeArtemis!33C96FBA8A4E
MAXmalware (ai score=87)
VBA32BScope.Trojan.SvcHorse.01643
RisingMalware.Heuristic!ET#90% (RDMK:cmRtazqFD+VGkoy9G5OhZqgEityq)
IkarusTrojan.Win32.Agent
FortinetW32/Dialer.NEW
AVGWin32:Malware-gen
Paloaltogeneric.ml
Qihoo-360Win32/Backdoor.PcClient.HgIASQgA

How to remove Backdoor:Win32/PcClient.ZR ransomware?

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 Backdoor:Win32/PcClient.ZR 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 Backdoor:Win32/PcClient.ZR 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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