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

What is Backdoor:Win32/Koceg!A infection?

In this post you will certainly find regarding the interpretation of Backdoor:Win32/Koceg!A and also its unfavorable effect on your computer system. Such ransomware are a form of malware that is specified by on-line fraudulences to require paying the ransom by a sufferer.

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Most of the cases, Backdoor:Win32/Koceg!A virus will advise its victims to launch funds move for the function of neutralizing the changes that the Trojan infection has actually presented to the target’s device.

Backdoor:Win32/Koceg!A Summary

These modifications can be as complies with:

  • 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.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents situated on the victim’s hard disk drive — so the sufferer can no longer use the data;
  • Preventing normal access 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.


One of the most normal networks where Backdoor:Win32/Koceg!A Trojans are injected are:

  • By means of phishing emails;
  • As a consequence of user winding up on a resource that hosts a harmful software application;

As quickly as the Trojan is successfully injected, it will certainly either cipher the data on the victim’s PC or stop the tool from operating in an appropriate manner – while additionally positioning a ransom note that mentions the demand for the sufferers to impact the repayment for the purpose of decrypting the documents or restoring the data system back to the initial problem. In most circumstances, the ransom money note will certainly turn up when the customer reboots the COMPUTER after the system has already been harmed.

Backdoor:Win32/Koceg!A distribution channels.

In numerous corners of the world, Backdoor:Win32/Koceg!A grows by leaps as well as bounds. Nevertheless, the ransom money notes as well as tricks of obtaining the ransom amount may differ depending upon certain neighborhood (local) setups. The ransom notes as well as tricks of extorting the ransom amount might vary depending on particular regional (regional) setups.

Ransomware injection

As an example:

    Faulty notifies about unlicensed software.

    In particular locations, the Trojans often wrongfully report having spotted some unlicensed applications enabled on the sufferer’s tool. The alert then demands the user to pay the ransom money.

    Faulty statements regarding illegal material.

    In countries where software piracy is less prominent, this technique is not as efficient for the cyber scams. Additionally, the Backdoor:Win32/Koceg!A popup alert may wrongly assert to be deriving from a police organization and will certainly report having situated youngster porn or other illegal data on the device.

    Backdoor:Win32/Koceg!A popup alert may wrongly assert to be deriving from a regulation enforcement organization and also will certainly report having situated child pornography or various other unlawful data on the tool. The alert will similarly have a need for the user to pay the ransom.

Technical details

File Info:

crc32: B056A9A3
md5: b4eeb8b1c741d277de1db1c7a708eba0
name: B4EEB8B1C741D277DE1DB1C7A708EBA0.mlw
sha1: ac8ec82cc54a25805046ff5d1d3a39c17de74250
sha256: 19d51921d648c5c2c250a99b1f355ca9a6a71f4f1da1e095ed5c7ae8312434a1
sha512: 34b2074a23f78096a074c56c6a92211162da8e1334fece0e628a78a195d6915bae29db25fbebb51a439a6be8277d53189db29e837462a24f7fe06ab7465c0a0b
ssdeep: 24576:OaqeGz8PceFDeeo8eeIeeUTeaas0kQWU8/E0EP:Gek8PceFDeeVeeIeeUTeaasi8s9P
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Backdoor:Win32/Koceg!A also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.FamVT.SockTTc.Worm
K7AntiVirus Trojan ( 0003a77a1 )
Elastic malicious (high confidence)
DrWeb Win32.HLLW.Socks.4
Cynet Malicious (score: 100)
CAT-QuickHeal Worm.Socks.14448
ALYac Backdoor.IRCBot.ACGB
Cylance Unsafe
Zillya Worm.Socks.Win32.21
Sangfor Trojan.Win32.Save.a
K7GW Trojan ( 0003a77a1 )
Cybereason malicious.1c741d
Baidu Win32.Backdoor.IRCBot.a
Cyren W32/Socks.A.gen!Eldorado
Symantec W32.Mandaph
ESET-NOD32 Win32/Socks.EX
APEX Malicious
Avast Win32:Injecter-AT [Trj]
ClamAV Win.Worm.Socks-12
Kaspersky Trojan-Ransom.Win32.Blocker.jaxq
BitDefender Backdoor.IRCBot.ACGB
NANO-Antivirus Trojan.Win32.Socks.wbrnt
MicroWorld-eScan Backdoor.IRCBot.ACGB
Tencent Trojan.Win32.Gandcrab.q
Ad-Aware Backdoor.IRCBot.ACGB
Sophos ML/PE-A + Troj/DwnLdc-Gen
Comodo Worm.Win32.Socks.EX@9uvh
F-Secure Trojan.TR/Drop.Agent.snv
BitDefenderTheta AI:Packer.48611E961B
VIPRE (fs)
Emsisoft Backdoor.IRCBot.ACGB (B)
SentinelOne Static AI – Malicious PE
Jiangmin Worm/
Avira TR/Drop.Agent.snv
Antiy-AVL Trojan/Generic.ASMalwS.18462BE
Microsoft Backdoor:Win32/Koceg.gen!A
Arcabit Backdoor.IRCBot.ACGB
ZoneAlarm Trojan-Ransom.Win32.Blocker.jaxq
GData Backdoor.IRCBot.ACGB
AhnLab-V3 Worm/Win32.Socks.C86480
Acronis suspicious
McAfee BackDoor-DOQ
MAX malware (ai score=83)
VBA32 BScope.Worm.Socks
Malwarebytes Generic.Worm.Autorun.DDS
TrendMicro-HouseCall BKDR_SMALL.JAN
Rising Ransom.Blocker!8.12A (TFE:dGZlOgVkX+xbyaUUQw)
Yandex Worm.Socks!giDPU5cMz9s
Ikarus Trojan-Downloader.Win32.Small
MaxSecure Trojan.Malware.121218.susgen
Fortinet W32/Socks.HF!worm
AVG Win32:Injecter-AT [Trj]

How to remove Backdoor:Win32/Koceg!A virus?

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 Backdoor:Win32/Koceg!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 Backdoor:Win32/Koceg!A you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site:
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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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