Trojan:Win32/Puzlice.A

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

What is Trojan:Win32/Puzlice.A infection?

In this short article you will locate concerning the interpretation of Trojan:Win32/Puzlice.A and also its adverse effect on your computer system. Such ransomware are a form of malware that is clarified by online scams to demand paying the ransom money by a sufferer.

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Most of the situations, Trojan:Win32/Puzlice.A infection will advise its victims to launch funds transfer for the function of reducing the effects of the modifications that the Trojan infection has actually introduced to the target’s gadget.

Trojan:Win32/Puzlice.A 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.
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • 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.
  • Possible date expiration check, exits too soon after checking local time;
  • 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.

  • 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;
  • Executed a process and injected code into it, probably while unpacking;
  • 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
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Attempts to modify browser security settings;
  • Attempts to disable browser security warnings;
  • 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 papers found on the victim’s hard disk drive — so the target can no more use the data;
  • Preventing routine accessibility 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.

Trojan:Win32/Puzlice.A

The most typical networks where Trojan:Win32/Puzlice.A Ransomware Trojans are infused are:

  • By means of phishing e-mails;
  • As an effect of individual ending up on a resource that hosts a destructive software application;

As soon as the Trojan is efficiently injected, it will either cipher the information on the target’s computer or prevent the gadget from operating in an appropriate way – while likewise positioning a ransom note that mentions the requirement for the targets to impact the payment for the function of decrypting the documents or restoring the file system back to the first condition. In the majority of instances, the ransom money note will certainly come up when the client reboots the COMPUTER after the system has currently been harmed.

Trojan:Win32/Puzlice.A circulation networks.

In numerous corners of the globe, Trojan:Win32/Puzlice.A expands by leaps as well as bounds. Nevertheless, the ransom money notes and methods of obtaining the ransom amount may differ depending upon particular local (local) settings. The ransom money notes and methods of obtaining the ransom amount might differ depending on particular regional (local) setups.

Ransomware injection

As an example:

    Faulty informs concerning unlicensed software.

    In certain locations, the Trojans frequently wrongfully report having actually identified some unlicensed applications allowed on the sufferer’s tool. The alert after that demands the individual to pay the ransom.

    Faulty statements about unlawful material.

    In countries where software application piracy is less preferred, this method is not as reliable for the cyber frauds. Additionally, the Trojan:Win32/Puzlice.A popup alert may falsely claim to be originating from a law enforcement organization as well as will certainly report having situated kid porn or various other prohibited information on the gadget.

    Trojan:Win32/Puzlice.A popup alert may falsely assert to be obtaining from a regulation enforcement establishment and will report having located youngster pornography or various other illegal information on the tool. The alert will in a similar way contain a demand for the user to pay the ransom money.

Technical details

File Info:

crc32: 15B6D6B0
md5: e0e8f55840c1022ffd759f51fbb726f4
name: E0E8F55840C1022FFD759F51FBB726F4.mlw
sha1: 6860ad42752f0ad93538f9cb38defc475b944a48
sha256: 4c0bd3c13354dbc95b4bb53999322317998e7fa05982fb06c8258c54569ae160
sha512: 2b2a7c4818559d18372512e3eb6c06f210099aa3b47e3e6feb866c70cee7e70c2357603ee1d4d43a693c6344408abcb24d99fec8f6d6469a7783883ad58d74ea
ssdeep: 3072:2Vqs1sm7vpbq6gzF1cuG9+/gjm6riphmL5vGsdg1pLS5XEt:2i1cyYTimQ1pAw
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Puzlice.A also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0055e3991 )
Elastic malicious (high confidence)
DrWeb Trojan.FakeAV.11616
Cynet Malicious (score: 100)
ALYac Gen:Variant.Razy.655791
Cylance Unsafe
Zillya Trojan.Blocker.Win32.12154
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_80% (D)
Alibaba Ransom:Win32/Blocker.c7be4314
K7GW Trojan ( 0055e3991 )
Cybereason malicious.840c10
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Injector.ARPQ
APEX Malicious
Avast Win32:Zbot-TNS [Trj]
Kaspersky Trojan-Ransom.Win32.Blocker.cvjs
BitDefender Gen:Variant.Razy.655791
NANO-Antivirus Trojan.Win32.Blocker.cnkupr
MicroWorld-eScan Gen:Variant.Razy.655791
Tencent Win32.Trojan.Blocker.Akou
Ad-Aware Gen:Variant.Razy.655791
Sophos Mal/Generic-S
Comodo Malware@#2aq6p5uk014yq
BitDefenderTheta Gen:NN.ZevbaF.34690.kmW@a0!rzhni
VIPRE Trojan.Win32.Generic!BT
TrendMicro TROJ_SPNR.35LB13
McAfee-GW-Edition BehavesLike.Win32.VBObfus.cc
FireEye Generic.mg.e0e8f55840c1022f
Emsisoft Gen:Variant.Razy.655791 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/Blocker.hfk
Webroot Trojan.Dropper.Gen
Avira TR/Dropper.Gen
eGambit Generic.Malware
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Trojan:Win32/Puzlice.A
AegisLab Trojan.Win32.Blocker.j!c
GData Gen:Variant.Razy.655791
McAfee Generic.emy
MAX malware (ai score=99)
VBA32 Hoax.Blocker
Panda Trj/CI.A
TrendMicro-HouseCall TROJ_SPNR.35LB13
Rising Ransom.Blocker!8.12A (CLOUD)
Yandex Trojan.Blocker!tELcsfZ0erM
Fortinet W32/Blocker.CVJS!tr
AVG Win32:Zbot-TNS [Trj]
Paloalto generic.ml

How to remove Trojan:Win32/Puzlice.A 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 Trojan:Win32/Puzlice.A 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 Trojan:Win32/Puzlice.A 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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