Win32/Kovter.I

Written by Robert Bailey

What is Win32/Kovter.I infection?

In this short article you will discover regarding the interpretation of Win32/Kovter.I and also its unfavorable influence on your computer. Such ransomware are a form of malware that is elaborated by online frauds to demand paying the ransom by a sufferer.

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Most of the instances, Win32/Kovter.I infection will instruct its sufferers to start funds move for the objective of counteracting the amendments that the Trojan infection has actually presented to the sufferer’s gadget.

Win32/Kovter.I Summary

These modifications can be as adheres to:

  • 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);
  • 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;
  • 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 binary language: Polish;
  • Unconventionial language used in binary resources: Polish;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Executed a process and injected code into it, probably while unpacking;
  • Detects VirtualBox through the presence of a library;
  • Detects Sandboxie through the presence of a library;
  • Detects SunBelt Sandbox through the presence of a library;
  • A process attempted to delay the analysis task by a long amount of time.;
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • Creates a registry key or value with NUL characters to avoid detection with regedit;
  • 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
  • Stores JavaScript or a script command in the registry, likely for persistence or configuration;
  • Attempts to identify installed analysis tools by registry key;
  • Attempts to identify installed AV products by installation directory;
  • Checks the version of Bios, possibly for anti-virtualization;
  • Checks the presence of disk drives in the registry, possibly for anti-virtualization;
  • Detects VirtualBox through the presence of a file;
  • Detects VirtualBox through the presence of a registry key;
  • Detects VMware through the presence of a file;
  • Detects VMware through the presence of a registry key;
  • Detects Virtual PC through the presence of a file;
  • Attempts to modify browser security settings;
  • 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 files located on the victim’s disk drive — so the target can no more utilize 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.

Win32/Kovter.I

The most common networks where Win32/Kovter.I are injected are:

  • By ways of phishing e-mails;
  • As a consequence of individual winding up on a resource that holds a harmful software application;

As soon as the Trojan is successfully infused, it will certainly either cipher the data on the sufferer’s PC or prevent the gadget from working in an appropriate manner – while likewise putting a ransom money note that points out the need for the sufferers to effect the settlement for the purpose of decrypting the files or recovering the documents system back to the preliminary problem. In many circumstances, the ransom note will certainly show up when the client restarts the PC after the system has currently been damaged.

Win32/Kovter.I distribution networks.

In various edges of the world, Win32/Kovter.I expands by jumps and also bounds. Nevertheless, the ransom money notes and also techniques of extorting the ransom money quantity may vary depending upon particular regional (regional) settings. The ransom money notes and also methods of extorting the ransom money amount may differ depending on particular regional (regional) settings.

Ransomware injection

As an example:

    Faulty informs about unlicensed software.

    In specific areas, the Trojans frequently wrongfully report having detected some unlicensed applications enabled on the target’s tool. The alert after that demands the customer to pay the ransom money.

    Faulty statements concerning prohibited material.

    In nations where software piracy is much less popular, this method is not as efficient for the cyber scams. Conversely, the Win32/Kovter.I popup alert may falsely assert to be originating from a law enforcement establishment as well as will certainly report having situated youngster pornography or other prohibited data on the device.

    Win32/Kovter.I popup alert may incorrectly claim to be deriving from a regulation enforcement institution and also will certainly report having situated kid porn or various other illegal data on the tool. The alert will similarly have a demand for the individual to pay the ransom.

Technical details

File Info:

crc32: 9AD0951C
md5: b4052e75f02f4611fdbe6a22cd7412b2
name: B4052E75F02F4611FDBE6A22CD7412B2.mlw
sha1: 755c66b10250874a8b3d8c54cba00f09793cb2b9
sha256: 26e9301f569d210dabcdf3bd7ebd5027e78f8d933e2cc8f1e27dd471149f4846
sha512: c5910f84f40c6c25bf7d17144d439f5cb25bb8f60951634b33712e69213d1ec91386da73f836bb006162005eef9a7a594d75207ef7ce2ef6e5d05d9b0ab7aec4
ssdeep: 6144:uMqpWaRUl4NIiG6wlw6AKOxw5um7D0bb1eJX9YKFztgJdBqzefdceJev:cWaRM4twwDKcw5B7DO5e9aKFzYdBMey
type: MS-DOS executable, MZ for MS-DOS

Version Info:

LegalCopyright: Copyright (C) 2001-2015 by Tracker Software Products (Canada) Ltd.
InternalName: PDF-XChange Viewer
FileVersion: 2.5.0314.0000
FileDescription: PDF-XChange Viewer
SpecialBuild:
CompanyName: Tracker Software Products (Canada) Ltd.
LegalTrademarks: Tracker Software Products (Canada) Ltd.
Comments: PDF-XChange Viewer
ProductName: PDF-XChange Viewer
ProductVersion: 2.5
PrivateBuild:
OriginalFilename: PDFXCview.exe
Translation: 0x0415 0x04e2

Win32/Kovter.I also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
MicroWorld-eScan Trojan.GenericKD.12241988
FireEye Generic.mg.b4052e75f02f4611
Qihoo-360 Win32/Botnet.Yakes.HgIASQgA
McAfee Artemis!B4052E75F02F
Cylance Unsafe
Zillya Trojan.Yakes.Win32.65628
Sangfor Trojan.Win32.Yakes.ueny
K7AntiVirus Trojan ( 004ff7221 )
BitDefender Trojan.GenericKD.12241988
K7GW Trojan ( 004ff7221 )
Cybereason malicious.5f02f4
Symantec Ransom.Kovter
APEX Malicious
Avast Win32:Evo-gen [Susp]
Cynet Malicious (score: 100)
Kaspersky Trojan.Win32.Yakes.ueny
Alibaba Trojan:Win32/Yakes.6cd7e931
NANO-Antivirus Trojan.Win32.Yakes.esnhxi
AegisLab Trojan.Win32.Generic.4!c
Rising Ransom.Tovicrypt!8.9F4B (CLOUD)
Ad-Aware Trojan.GenericKD.12241988
Sophos Mal/Generic-S
Comodo Malware@#3gepgher028r
DrWeb Trojan.MulDrop7.9015
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Generic.fc
Emsisoft Trojan.GenericKD.12241988 (B)
SentinelOne Static AI – Suspicious PE
Avira TR/Crypt.XPACK.Gen3
MAX malware (ai score=99)
Antiy-AVL Trojan/Win32.Poweliks
Microsoft Trojan:Win32/Kovter.I
Arcabit Trojan.Generic.DBACC44
ZoneAlarm Trojan.Win32.Yakes.ueny
GData Trojan.GenericKD.12241988
ESET-NOD32 Win32/Kovter.I
Acronis suspicious
BitDefenderTheta Gen:NN.ZexaF.34608.vmuaaa1TwhmG
ALYac Trojan.GenericKD.12241988
VBA32 Trojan.Yakes
Malwarebytes Malware.Heuristic.1003
Panda Trj/CI.A
Tencent Win32.Trojan.Inject.Auto
Yandex Trojan.GenAsa!BMQ1RHwcHpk
Ikarus Trojan.Win32.Rescoms
AVG Win32:Evo-gen [Susp]
Paloalto generic.ml
CrowdStrike win/malicious_confidence_60% (D)

How to remove Win32/Kovter.I 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/Kovter.I 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/Kovter.I 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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