Trojan.Kovter.ED

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

What is Trojan.Kovter.ED infection?

In this short article you will certainly locate regarding the interpretation of Trojan.Kovter.ED as well as its negative influence on your computer. Such ransomware are a form of malware that is elaborated by on-line fraudulences to require paying the ransom by a victim.

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Most of the situations, Trojan.Kovter.ED ransomware will advise its sufferers to initiate funds move for the function of neutralizing the amendments that the Trojan infection has actually presented to the target’s device.

Trojan.Kovter.ED Summary

These modifications can be as complies with:

  • 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.
  • Mimics the system’s user agent string for its own requests;
  • 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.

  • A process created a hidden window;
  • 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;
  • Detects the presence of Wine emulator via function name;
  • Checks for the presence of known windows from debuggers and forensic tools;
  • 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;
  • Attempts to execute a binary from a dead or sinkholed URL;
  • 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;
  • 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 identify installed analysis tools by registry key;
  • 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;
  • Detects Virtual PC through the presence of a registry key;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Attempts to modify browser security settings;
  • Creates a 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.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers located on the target’s disk drive — so the sufferer can no more make use of the data;
  • Preventing normal access 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.Kovter.ED

The most typical networks where Trojan.Kovter.ED Trojans are injected are:

  • By means of phishing e-mails;
  • As an effect of customer ending up on a source that organizes a destructive software application;

As quickly as the Trojan is successfully injected, it will either cipher the data on the victim’s computer or stop the device from working in a proper way – while likewise positioning a ransom money note that mentions the need for the victims to impact the repayment for the function of decrypting the papers or bring back the data system back to the first condition. In most instances, the ransom note will certainly show up when the client reboots the COMPUTER after the system has currently been harmed.

Trojan.Kovter.ED circulation networks.

In numerous corners of the globe, Trojan.Kovter.ED expands by leaps and also bounds. Nonetheless, the ransom money notes and also methods of extorting the ransom amount may vary relying on specific neighborhood (regional) setups. The ransom notes and methods of extorting the ransom money amount might differ depending on specific local (regional) setups.

Ransomware injection

For instance:

    Faulty signals concerning unlicensed software program.

    In particular areas, the Trojans typically wrongfully report having actually spotted some unlicensed applications enabled on the victim’s tool. The alert after that requires the customer to pay the ransom.

    Faulty declarations regarding unlawful web content.

    In nations where software program piracy is less prominent, this approach is not as efficient for the cyber frauds. Additionally, the Trojan.Kovter.ED popup alert may wrongly assert to be originating from a police establishment as well as will report having situated kid pornography or various other prohibited data on the tool.

    Trojan.Kovter.ED popup alert might wrongly declare to be obtaining from a legislation enforcement organization as well as will certainly report having situated kid pornography or various other illegal information on the tool. The alert will similarly include a need for the individual to pay the ransom.

Technical details

File Info:

crc32: 1BBDD080
md5: 4a108fd240faebe1150c96225537d3a0
name: 4A108FD240FAEBE1150C96225537D3A0.mlw
sha1: 372699e7cd46c12ce4645c073b93245cd39a9ff6
sha256: e0299b4f6d677579f4374f5c7274a574c586051777216c57b08972b8b1637785
sha512: d13e6a539f832e8d3c59114dbef7b59f1bd1afd1dd015c9c82248520441e2208ed7bfc1b21eae5be266b6d87dffa75b0c20e0bd4c2d949d565496b9c56348536
ssdeep: 6144:6h+ykFDX/tt5ipwQd3Zks1NqZNlPur5UMRjIjXn+Q:s+ykFJfimQd3V1QZNu5FRQ3B
type: PE32 executable (GUI) Intel 80386 system file, for MS Windows

Version Info:

0: [No Data]

Trojan.Kovter.ED also known as:

GridinSoftTrojan.Ransom.Gen
Elasticmalicious (high confidence)
DrWebTrojan.Encoder.858
CynetMalicious (score: 100)
ALYacGen:Variant.Zbot.176
CylanceUnsafe
ZillyaTrojan.Zbot.Win32.183870
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (W)
AlibabaTrojan:Win32/Shade.bb228075
K7GWTrojan ( 0055e3991 )
K7AntiVirusTrojan ( 0055e3991 )
CyrenW32/S-3650669b!Eldorado
ESET-NOD32Win32/Kovter.D
APEXMalicious
AvastWin32:RansomShade-B [Trj]
ClamAVWin.Trojan.AppWizard-9763600-1
KasperskyTrojan-Ransom.Win32.Shade.ug
BitDefenderGen:Variant.Zbot.176
NANO-AntivirusTrojan.Win32.Encoder.duagzv
ViRobotTrojan.Win32.CTB-Locker.790528
SUPERAntiSpywareTrojan.Agent/Gen-Kovter
MicroWorld-eScanGen:Variant.Zbot.176
TencentMalware.Win32.Gencirc.10b3eab8
Ad-AwareGen:Variant.Zbot.176
ComodoTrojWare.Win32.Bagsu.AF@5szj4v
BitDefenderThetaGen:NN.ZexaF.34628.tyX@aOJLQmoK
VIPRETrojan.Win32.Generic!BT
McAfee-GW-EditionPWSZbot-FAKV!4A108FD240FA
FireEyeGeneric.mg.4a108fd240faebe1
EmsisoftGen:Variant.Zbot.176 (B)
SentinelOneStatic AI – Malicious PE
JiangminTrojan/Shade.c
WebrootTrojan.Dropper.Gen
AviraHEUR/AGEN.1120601
KingsoftWin32.Troj.Generic_a.a.(kcloud)
MicrosoftTrojan:Win32/DllCheck.A!MSR
ArcabitTrojan.Zbot.176
AegisLabTrojan.Win32.Shade.tqva
GDataWin32.Trojan-Ransom.Troldesh.B
TACHYONTrojan-Dropper/W32.Inject.311350
AhnLab-V3Trojan/Win32.Miuref.R159490
Acronissuspicious
McAfeePWSZbot-FAKV!4A108FD240FA
MAXmalware (ai score=100)
VBA32TrojanDropper.Injector
MalwarebytesTrojan.Kovter.ED
PandaTrj/Genetic.gen
RisingRansom.Shade!8.12CC (CLOUD)
IkarusTrojan.Win32.Injector
FortinetW32/Generic.AC.1F4264!tr
AVGWin32:RansomShade-B [Trj]
Qihoo-360Win32/Ransom.Shade.HwcBEpsA

How to remove Trojan.Kovter.ED 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.Kovter.ED 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.Kovter.ED 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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