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

What is Win32/Kryptik.LGK infection?

In this short article you will find regarding the interpretation of Win32/Kryptik.LGK and also its unfavorable impact on your computer system. Such ransomware are a form of malware that is elaborated by online fraudulences to require paying the ransom money by a target.

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Most of the instances, Win32/Kryptik.LGK virus will instruct its sufferers to start funds move for the objective of counteracting the amendments that the Trojan infection has introduced to the sufferer’s device.

Win32/Kryptik.LGK Summary

These alterations 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.
  • 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.
  • Unconventionial language used in binary resources: Russian;
  • Sniffs keystrokes;
  • 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.
  • Ciphering the documents situated on the sufferer’s disk drive — so the victim can no more use the information;
  • Preventing routine accessibility 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.
Similar behavior
Related domains Ransom:Win32/LockScreen.1430b635 Ransom:Win32/LockScreen.1430b635


The most normal networks where Win32/Kryptik.LGK Ransomware are infused are:

  • By means of phishing emails;
  • As a repercussion of individual winding up on a resource that organizes a harmful software program;

As quickly as the Trojan is successfully injected, it will certainly either cipher the data on the sufferer’s computer or protect against the tool from operating in an appropriate fashion – while likewise positioning a ransom money note that mentions the demand for the sufferers to effect the payment for the function of decrypting the records or recovering the data system back to the preliminary problem. In most circumstances, the ransom money note will certainly come up when the customer restarts the COMPUTER after the system has actually already been damaged.

Win32/Kryptik.LGK circulation networks.

In different edges of the globe, Win32/Kryptik.LGK grows by leaps and also bounds. Nevertheless, the ransom money notes and also techniques of obtaining the ransom money quantity may vary relying on specific regional (local) setups. The ransom notes and also techniques of extorting the ransom money amount may differ depending on certain neighborhood (local) settings.

Ransomware injection

For example:

    Faulty notifies concerning unlicensed software program.

    In specific areas, the Trojans commonly wrongfully report having detected some unlicensed applications made it possible for on the target’s gadget. The alert then demands the customer to pay the ransom money.

    Faulty declarations concerning prohibited web content.

    In nations where software piracy is less preferred, this method is not as effective for the cyber fraudulences. Alternatively, the Win32/Kryptik.LGK popup alert might falsely assert to be stemming from a law enforcement organization and also will report having situated child pornography or various other prohibited information on the gadget.

    Win32/Kryptik.LGK popup alert might incorrectly claim to be acquiring from a regulation enforcement institution and also will certainly report having situated child porn or other unlawful data on the tool. The alert will likewise have a need for the user to pay the ransom money.

Technical details

File Info:

crc32: 31280AE6
md5: 0ad337e6984f1d7dbc5a6ebffd1cafcc
name: 0AD337E6984F1D7DBC5A6EBFFD1CAFCC.mlw
sha1: a026f187c69dada6fa2f51380b8b4739d7041058
sha256: 5499490c459c4e6abbfa1d6bdb75c755faa6cb4043fb26fc0c8117605065bad2
sha512: 0e2642f55ae68b29205539acdc7681522183771cec77e7d629075c0cff3f0418a8eb691414ca74dbd1b833605328092585f4edac8837a9300c3d38cbbf943df6
ssdeep: 6144:4ATsl0bDLTS/Qxdum9VJaiCRa4PuIB3DuuKSxPe9EBjLtNJE5jg+nyrJKb:4CqQxdumrR4P5B3DuWxmgLzWN/b
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (C) 2011
InternalName: Idsosid.exe
CompanyName: Idsosid
ProductName: Idsosid
FileDescription: Idsosid
OriginalFilename: Idsosid.exe
Translation: 0x001c 0x04b0

Win32/Kryptik.LGK also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 0055dd191 )
DrWeb Trojan.Winlock.3020
Cynet Malicious (score: 100)
ALYac Gen:Trojan.Heur.RP.By0@bWcLpXjk
Cylance Unsafe
Zillya Trojan.Kryptik.Win32.964123
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_60% (D)
Alibaba Ransom:Win32/LockScreen.1430b635
K7GW Trojan ( 0055dd191 )
Cybereason malicious.6984f1
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Kryptik.LGK
APEX Malicious
Avast Win32:Zbot-MZZ [Trj]
BitDefender Gen:Trojan.Heur.RP.By0@bWcLpXjk
NANO-Antivirus Trojan.Win32.Winlock.econwv
MicroWorld-eScan Gen:Trojan.Heur.RP.By0@bWcLpXjk
Tencent Malware.Win32.Gencirc.114bbed0
Ad-Aware Gen:Trojan.Heur.RP.By0@bWcLpXjk
Sophos Mal/Generic-S
Comodo Malware@#3u49orwvdjm4h
BitDefenderTheta AI:Packer.6E5CBFF51F
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_LOCKSCREEN.CBQ165K
Emsisoft Gen:Trojan.Heur.RP.By0@bWcLpXjk (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/Gimemo.aag
Webroot W32.Rogue.Gen
Avira TR/Crypt.ZPACK.Gen2
eGambit Generic.Malware
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Ransom:Win32/LockScreen.AO
Arcabit Trojan.Heur.RP.E68E8D
AegisLab Trojan.Win32.Generic.4!c
GData Gen:Trojan.Heur.RP.By0@bWcLpXjk
AhnLab-V3 Malware/Win32.Generic.C1969143
Acronis suspicious
McAfee Artemis!0AD337E6984F
MAX malware (ai score=100)
VBA32 BScope.Trojan.Proxy
Panda Trj/CI.A
TrendMicro-HouseCall Ransom_LOCKSCREEN.CBQ165K
Rising Ransom.LockScreen!8.83D (CLOUD)
Ikarus Trojan-Ransom.Gimemo
Fortinet W32/Kryptik.LEC!tr
AVG Win32:Zbot-MZZ [Trj]

How to remove Win32/Kryptik.LGK 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 Win32/Kryptik.LGK 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 Win32/Kryptik.LGK 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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