Win32/Kryptik.FWLM

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

What is Win32/Kryptik.FWLM infection?

In this post you will find concerning the definition of Win32/Kryptik.FWLM as well as its unfavorable influence on your computer. Such ransomware are a type of malware that is specified by on the internet scams to demand paying the ransom money by a target.

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In the majority of the instances, Win32/Kryptik.FWLM ransomware will certainly instruct its targets to launch funds transfer for the purpose of reducing the effects of the modifications that the Trojan infection has actually presented to the target’s tool.

Win32/Kryptik.FWLM Summary

These adjustments 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.
  • A process created a hidden window;
  • Creates an excessive number of UDP connection attempts to external IP addresses;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses Windows utilities for basic functionality;
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • 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
  • EternalBlue behavior. Allows cyber threat actors to remotely execute arbitrary code and gain access to a network by sending specially crafted packets.

    This is has made EternalBlue trick popular with various malware, such as Trickbot, a modular banking trojan, as well as CoinMiner and WannaMine, crypto miners that use the EternalBlue exploit in order to gain access to computing power to mine cryptocurrencies.

  • Attempts to access Bitcoin/ALTCoin wallets;
  • Generates some ICMP traffic;
  • 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.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the files located on the target’s hard drive — so the target can no more 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.

Win32/Kryptik.FWLM

One of the most regular channels whereby Win32/Kryptik.FWLM Trojans are injected are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As a repercussion of individual ending up on a source that holds a malicious software program;

As soon as the Trojan is efficiently infused, it will either cipher the data on the sufferer’s PC or avoid the gadget from functioning in a proper way – while additionally placing a ransom money note that discusses the demand for the targets to effect the payment for the purpose of decrypting the documents or restoring the documents system back to the preliminary condition. In the majority of instances, the ransom note will certainly show up when the client restarts the COMPUTER after the system has actually already been damaged.

Win32/Kryptik.FWLM circulation channels.

In numerous edges of the world, Win32/Kryptik.FWLM expands by jumps and bounds. However, the ransom money notes and also techniques of obtaining the ransom amount might differ relying on specific neighborhood (regional) setups. The ransom money notes as well as techniques of extorting the ransom quantity may vary depending on specific regional (regional) setups.

Ransomware injection

As an example:

    Faulty signals concerning unlicensed software program.

    In specific locations, the Trojans often wrongfully report having actually identified some unlicensed applications enabled on the sufferer’s gadget. The alert then demands the individual to pay the ransom.

    Faulty declarations about illegal material.

    In countries where software application piracy is less prominent, this technique is not as reliable for the cyber scams. Alternatively, the Win32/Kryptik.FWLM popup alert may wrongly assert to be originating from a police establishment and also will certainly report having situated youngster porn or other prohibited data on the device.

    Win32/Kryptik.FWLM popup alert may falsely claim to be acquiring from a law enforcement organization and will certainly report having located child pornography or other unlawful data on the device. The alert will in a similar way have a need for the user to pay the ransom money.

Technical details

File Info:

crc32: 842FA1DC
md5: 818d11aab773ba094119be32e2a26893
name: 818D11AAB773BA094119BE32E2A26893.mlw
sha1: 25a95da23099d02e2318ae345de147ffbbf77632
sha256: f17649565e73e4761df7a46bf69e8c1fda8402d55e529bccf364687547f41625
sha512: b26c8912727ae5e5896c9c4e7c60fa1b36cb4dad807ee92825406215d50b77486b5fae7d789c0ae80a978329aef9e72fb7a1963ef8b5a8b356c6da4fc4658787
ssdeep: 12288:ZRCvq903BEgk/0NFhlIWQqz/1mRvODPyX:rCy90Gz/kF3VQqL1mRvODKX
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Tonec Inc., Copyright xa9 1999 - 2015
InternalName: IDMGrHlp
FileVersion: 6, 22, 1, 1
CompanyName: Tonec Inc.
LegalTrademarks: Internet Download Manager
Comments: Auxiliary program for Internet Download Manager
ProductName: Internet Download Manager
ProductVersion: 6, 22, 1, 1
FileDescription: Internet Download Manager module
OriginalFilename: IDMGrHlp.EXE
Translation: 0x0409 0x04b0

Win32/Kryptik.FWLM also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.GenericKDZ.40326
FireEye Generic.mg.818d11aab773ba09
CAT-QuickHeal Ransom.Cerber.A4
McAfee Ransomware-GCQ!818D11AAB773
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 005188bf1 )
BitDefender Trojan.GenericKDZ.40326
K7GW Trojan ( 0039f5721 )
Cybereason malicious.ab773b
BitDefenderTheta Gen:NN.ZexaF.34590.fr3@aq3KFhji
Symantec Packed.Generic.459
APEX Malicious
Paloalto generic.ml
ClamAV Win.Dropper.Cerber-9779368-0
Kaspersky HEUR:Trojan.Win32.Generic
NANO-Antivirus Trojan.Win32.Kryptik.eskwtg
Rising Trojan.Kryptik!1.AD41 (CLOUD)
Ad-Aware Trojan.GenericKDZ.40326
Sophos ML/PE-A + Mal/Cerber-AL
Comodo TrojWare.Win32.Bulta.GR@7k46qi
F-Secure Heuristic.HEUR/AGEN.1117922
DrWeb Trojan.Encoder.4691
Zillya Trojan.Kryptik.Win32.1268650
TrendMicro Ransom_HPCERBER.SMALY5B
McAfee-GW-Edition BehavesLike.Win32.Ransomware.th
Emsisoft Trojan.GenericKDZ.40326 (B)
Jiangmin Trojan.Zerber.dba
eGambit Unsafe.AI_Score_99%
Avira HEUR/AGEN.1117922
Antiy-AVL Trojan/Win32.AGeneric
Microsoft Ransom:Win32/Cerber.L!bit
Arcabit Trojan.Generic.D9D86
AegisLab Trojan.Win32.Generic.4!c
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Win32.Trojan-Ransom.Cerber.AL
Cynet Malicious (score: 100)
AhnLab-V3 Win-Trojan/Lukitus2.Exp
Acronis suspicious
VBA32 Trojan-Ransom.Zerber
MAX malware (ai score=100)
Malwarebytes Generic.Trojan.Malicious.DDS
Panda Trj/Genetic.gen
ESET-NOD32 a variant of Win32/Kryptik.FWLM
TrendMicro-HouseCall Ransom_HPCERBER.SMALY5B
Tencent Malware.Win32.Gencirc.10b3f2be
SentinelOne Static AI – Malicious PE
MaxSecure Win.MxResIcn.Heur.Gen
Fortinet W32/Zamg.O!tr
AVG Win32:RansomX-gen [Ransom]
Avast Win32:RansomX-gen [Ransom]
CrowdStrike win/malicious_confidence_100% (D)
Qihoo-360 Generic/HEUR/QVM20.1.B857.Malware.Gen

How to remove Win32/Kryptik.FWLM 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 Win32/Kryptik.FWLM 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.FWLM 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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