Win32:Zbot-PZJ [Trj]

Written by Robert Bailey

What is Win32:Zbot-PZJ [Trj] infection?

In this post you will certainly discover regarding the interpretation of Win32:Zbot-PZJ [Trj] and its unfavorable impact on your computer system. Such ransomware are a type of malware that is clarified by on the internet frauds to demand paying the ransom money by a sufferer.

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Most of the cases, Win32:Zbot-PZJ [Trj] ransomware will advise its targets to start funds move for the objective of reducing the effects of the modifications that the Trojan infection has presented to the target’s device.

Win32:Zbot-PZJ [Trj] Summary

These modifications 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.
  • Injection with CreateRemoteThread in a remote process;
  • 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.
  • Mimics the system’s user agent string for its own requests;
  • A process attempted to delay the analysis task.;
  • At least one IP Address, Domain, or File Name was found in a crypto call;
  • Starts servers listening on 0.0.0.0:16457, :0, 127.0.0.1:10173;
  • Expresses interest in specific running processes;
  • 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.

  • 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.
  • Uses Windows utilities for basic functionality;
  • Code injection with CreateRemoteThread in a remote process;
  • Tries to unhook or modify Windows functions monitored by Cuckoo;
  • Steals private information from local Internet browsers;
  • Behavior consistent with a dropper attempting to download the next stage.;
  • 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 Zeus (Banking Trojan) mutexes;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Attempts to modify browser security settings;
  • Harvests credentials from local FTP client softwares;
  • Attempts to interact with an Alternate Data Stream (ADS);
  • Creates a slightly modified copy of itself;
  • Collects information to fingerprint the system. There are behavioral human characteristics that can be used to digitally identify a person to grant access to systems, devices, or data. Unlike passwords and verification codes, fingerprints are fundamental parts of user’s identities. Among the threats blocked on biometric data processing and storage systems is spyware, the malware used in phishing attacks (mostly spyware downloaders and droppers), ransomware, and Banking Trojans as posing the greatest danger.
  • Ciphering the records located on the target’s hard disk — so the victim can no longer utilize the data;
  • Preventing routine accessibility 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.

Win32:Zbot-PZJ [Trj]

One of the most typical networks through which Win32:Zbot-PZJ [Trj] are infused are:

  • By ways of phishing emails;
  • As an effect of customer ending up on a source that hosts a destructive software application;

As quickly as the Trojan is successfully injected, it will either cipher the data on the victim’s PC or prevent the device from operating in an appropriate manner – while also putting a ransom money note that mentions the requirement for the victims to impact the settlement for the function of decrypting the papers or bring back the file system back to the initial condition. In the majority of instances, the ransom money note will show up when the customer restarts the PC after the system has actually already been harmed.

Win32:Zbot-PZJ [Trj] distribution channels.

In various corners of the globe, Win32:Zbot-PZJ [Trj] expands by leaps as well as bounds. However, the ransom notes as well as methods of obtaining the ransom amount may vary relying on specific regional (local) settings. The ransom money notes as well as methods of extorting the ransom amount may differ depending on specific neighborhood (local) settings.

Ransomware injection

As an example:

    Faulty alerts regarding unlicensed software application.

    In certain areas, the Trojans commonly wrongfully report having actually found some unlicensed applications enabled on the victim’s tool. The sharp then demands the individual to pay the ransom.

    Faulty statements concerning prohibited content.

    In countries where software program piracy is less popular, this approach is not as effective for the cyber frauds. Alternatively, the Win32:Zbot-PZJ [Trj] popup alert may falsely declare to be stemming from a police establishment as well as will report having situated child pornography or various other prohibited data on the device.

    Win32:Zbot-PZJ [Trj] popup alert may wrongly assert to be deriving from a regulation enforcement institution and will report having located youngster porn or other illegal information on the device. The alert will similarly have a demand for the user to pay the ransom.

Technical details

File Info:

crc32: 5E6F1870
md5: 9695b1a3764e9f9f460423d699a2e9ec
name: 9695B1A3764E9F9F460423D699A2E9EC.mlw
sha1: 1e353e0635ae1369d3d93935d63b71d324c668ac
sha256: 89161ee676944daacf39152d625db8a751970980367044439c032330bdbf6da5
sha512: da6d214130ccce68af25b2073b53c8cc4cced6b03c57706cce8de058159f843963ad8acfa2edb8b8d0c0c74c292e2beda9087353dfa95b4afd2fbd099aa43d82
ssdeep: 3072:OFslBhaeltoZaE+ysRNud+O9+t4JVWxntEsAcVAgT2eOebyAmwS9EaIUB8:QxtYuIBt5tEFMTFOeby6J
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32:Zbot-PZJ [Trj] also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Spyware ( 0055e3db1 )
Elastic malicious (high confidence)
DrWeb Trojan.PWS.Panda.2401
Cynet Malicious (score: 100)
ALYac Trojan.Ransom.Cerber.1
Cylance Unsafe
Zillya Trojan.Zbot.Win32.86494
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
K7GW Spyware ( 0055e3db1 )
Cybereason malicious.3764e9
Symantec Trojan.Zbot!gen40
ESET-NOD32 Win32/Spy.Zbot.AAO
APEX Malicious
Avast Win32:Zbot-PZJ [Trj]
Kaspersky Trojan-Spy.Win32.Zbot.yuyt
BitDefender Trojan.Ransom.Cerber.1
NANO-Antivirus Trojan.Win32.Zbot.bckooo
SUPERAntiSpyware Trojan.Agent/Gen-Festo
MicroWorld-eScan Trojan.Ransom.Cerber.1
Tencent Win32.Trojan-Spy.Zbot.cfar
Ad-Aware Trojan.Ransom.Cerber.1
Sophos Mal/Generic-R + Troj/Zbot-DIK
BitDefenderTheta Gen:NN.ZexaF.34670.lqX@a4sHcuei
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.ZBot.cc
FireEye Generic.mg.9695b1a3764e9f9f
Emsisoft Trojan.Ransom.Cerber.1 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin TrojanSpy.Zbot.clmf
Avira TR/Crypt.XPACK.Gen7
eGambit Unsafe.AI_Score_97%
Kingsoft Win32.Troj.Zbot.gk.(kcloud)
Microsoft PWS:Win32/Zbot!CI
AegisLab Trojan.Win32.Zbot.l!c
GData Trojan.Ransom.Cerber.1
TACHYON Trojan-Spy/W32.ZBot.187392.AS
AhnLab-V3 Spyware/Win32.Zbot.R44085
Acronis suspicious
McAfee PWS-Zbot.gen.any
MAX malware (ai score=87)
VBA32 TrojanSpy.Zbot
Malwarebytes Virus.Expiro
Panda Trj/Genetic.gen
Rising Spyware.Zbot!8.16B (CLOUD)
Yandex TrojanSpy.Zbot!f/THaOTrX/E
Ikarus Trojan-PWS.Win32.Zbot
Fortinet W32/Zbot.ASJ!tr
AVG Win32:Zbot-PZJ [Trj]
Qihoo-360 Win32/Trojan.Zbot.HwcBEpsA

How to remove Win32:Zbot-PZJ [Trj] virus?

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 Win32:Zbot-PZJ [Trj] 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 Win32:Zbot-PZJ [Trj] 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/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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