Trojan-Ransom.Win32.Zerber.extk

Written by Robert Bailey

What is Trojan-Ransom.Win32.Zerber.extk infection?

In this short article you will locate regarding the meaning of Trojan-Ransom.Win32.Zerber.extk and also its adverse impact on your computer. Such ransomware are a kind of malware that is specified by on the internet scams to require paying the ransom money by a sufferer.

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In the majority of the situations, Trojan-Ransom.Win32.Zerber.extk infection will certainly instruct its sufferers to launch funds transfer for the purpose of reducing the effects of the modifications that the Trojan infection has introduced to the sufferer’s gadget.

Trojan-Ransom.Win32.Zerber.extk 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.
  • Compression (or decompression);
  • Enumerates user accounts on the system;
  • 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.;
  • 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.

  • Attempts to modify desktop wallpaper;
  • Exhibits behavior characteristic of Cerber ransomware;
  • Attempts to execute a binary from a dead or sinkholed URL;
  • 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.
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Attempts to access Bitcoin/ALTCoin wallets;
  • 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.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers found on the victim’s hard disk drive — so the victim can no more make use of the data;
  • Preventing normal access to the target’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-Ransom.Win32.Zerber.extk

The most common networks whereby Trojan-Ransom.Win32.Zerber.extk are injected are:

  • By methods of phishing emails;
  • As a consequence of user ending up on a resource that holds a malicious software program;

As quickly as the Trojan is efficiently injected, it will certainly either cipher the information on the target’s computer or prevent the tool from functioning in an appropriate way – while additionally placing a ransom note that points out the demand for the victims to effect the settlement for the function of decrypting the papers or bring back the documents system back to the initial condition. In the majority of instances, the ransom money note will come up when the client reboots the PC after the system has currently been harmed.

Trojan-Ransom.Win32.Zerber.extk distribution channels.

In various edges of the world, Trojan-Ransom.Win32.Zerber.extk expands by jumps and also bounds. However, the ransom notes and techniques of obtaining the ransom money amount may vary depending on certain neighborhood (local) setups. The ransom notes and tricks of obtaining the ransom amount may vary depending on particular local (local) setups.

Ransomware injection

For instance:

    Faulty informs regarding unlicensed software.

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

    Faulty declarations regarding illegal web content.

    In nations where software application piracy is less prominent, this technique is not as efficient for the cyber frauds. Alternatively, the Trojan-Ransom.Win32.Zerber.extk popup alert might incorrectly declare to be originating from a law enforcement establishment and also will report having located youngster pornography or various other illegal data on the tool.

    Trojan-Ransom.Win32.Zerber.extk popup alert might incorrectly declare to be acquiring from a regulation enforcement organization and will report having located kid pornography or various other illegal information on the tool. The alert will in a similar way have a need for the individual to pay the ransom money.

Technical details

File Info:

crc32: 7A7ECC41
md5: 8c5794cf9e144a7a81741d967c38bc0c
name: 8C5794CF9E144A7A81741D967C38BC0C.mlw
sha1: 5366ccb777cdc7347ec74b21ef7d13e5c00bbe03
sha256: c0b05ddd7c8b25f97709656f330f2c27f0ce7125ee93f7a9469962952e0b8a73
sha512: fbc2170aac3519b55cfe4fca86b23e4a37df428c0a54f2e30c1db578553f38dcce7e885ef1b65f656c90f58e4f8f83cbcd17bb9d4dd1a1c8384fe74f4c0e117f
ssdeep: 6144:9W+7+eMWONEzzwFhOPbmOX2jf1FZUVe6NXGbX9YvO+hArflzT:9R1woGOPbaBie6NX2gRCr9zT
type: PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive

Version Info:

0: [No Data]

Trojan-Ransom.Win32.Zerber.extk also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Riskware ( 0040eff71 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.4691
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.Cerber.B
Cylance Unsafe
Sangfor Ransom.Win32.Zerber.extk
CrowdStrike win/malicious_confidence_100% (D)
K7GW Riskware ( 0040eff71 )
Cybereason malicious.777cdc
Cyren W32/Trojan.KVCU-2269
Symantec Ransom.Cerber
ESET-NOD32 NSIS/Injector.SJ
APEX Malicious
Avast Win32:Trojan-gen
ClamAV Win.Ransomware.Cerber-9168461-0
Kaspersky Trojan-Ransom.Win32.Zerber.extk
NANO-Antivirus Trojan.Nsis.Zerber.elbyqr
Sophos ML/PE-A + Mal/Cerber-AA
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.ObfusRansom.dc
FireEye Generic.mg.8c5794cf9e144a7a
SentinelOne Static AI – Suspicious PE
Webroot Trojan.Dropper.Gen
Avira TR/Dropper.Gen
Microsoft Ransom:Win32/Cerber.J
AegisLab Trojan.Win32.Zerber.j!c
AhnLab-V3 Trojan/Win32.Cerber.R194435
McAfee Artemis!8C5794CF9E14
MAX malware (ai score=100)
Panda Trj/CI.A
Tencent Win32.Trojan.Raas.Auto
Ikarus Trojan.NSIS.Injector
Fortinet W32/Injector.TD!tr
AVG Win32:Trojan-gen
Paloalto generic.ml

How to remove Trojan-Ransom.Win32.Zerber.extk 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 Trojan-Ransom.Win32.Zerber.extk 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 Trojan-Ransom.Win32.Zerber.extk 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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