Win32/Waledac.FJ

Written by Robert Bailey

What is Win32/Waledac.FJ infection?

In this post you will discover about the interpretation of Win32/Waledac.FJ and also its adverse impact on your computer system. Such ransomware are a type of malware that is specified by on-line scams to demand paying the ransom by a target.

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When we talk about the intrusion of unfamiliar programs into your computer’s work, the proverb “Forewarned is forearmed” describes the situation as accurately as possible. Gridinsoft Anti-Malware is exactly the tool that is always useful to have in your armory: fast, efficient, up-to-date. It is appropriate to use it as an emergency help at the slightest suspicion of infection.
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In the majority of the instances, Win32/Waledac.FJ ransomware will certainly advise its victims to initiate funds transfer for the objective of neutralizing the changes that the Trojan infection has introduced to the victim’s tool.

Win32/Waledac.FJ Summary

These alterations can be as follows:

  • 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 attempted to delay the analysis task.;
  • 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;
  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • The executable is compressed using UPX;
  • Uses Windows utilities for basic functionality;
  • Queries information on disks, possibly for anti-virtualization. Since VMs share the same disk space so it is expected that they won’t be getting as much space as an application running on
    native hardware will have access to.
  • Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
  • Creates a copy of itself;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the documents located on the target’s hard disk — so the sufferer can no longer utilize the data;
  • Preventing regular accessibility to the target’s workstation;

Win32/Waledac.FJ

One of the most normal networks through which Win32/Waledac.FJ are infused are:

  • By ways of phishing e-mails;
  • As an effect of individual ending up on a resource that holds a destructive software application;

As quickly as the Trojan is efficiently injected, it will certainly either cipher the information on the target’s PC or prevent the gadget from functioning in a proper way – while likewise positioning a ransom note that mentions the need for the victims to impact the settlement for the purpose of decrypting the records or bring back the documents system back to the first condition. In most instances, the ransom note will certainly come up when the customer reboots the PC after the system has actually currently been harmed.

Win32/Waledac.FJ circulation channels.

In numerous corners of the world, Win32/Waledac.FJ grows by leaps as well as bounds. However, the ransom money notes and also techniques of obtaining the ransom money quantity may differ relying on certain neighborhood (regional) setups. The ransom notes and also techniques of extorting the ransom quantity might vary depending on certain neighborhood (local) settings.

Ransomware injection

For example:

    Faulty signals regarding unlicensed software.

    In certain areas, the Trojans commonly wrongfully report having spotted some unlicensed applications made it possible for on the sufferer’s device. The alert then demands the individual to pay the ransom money.

    Faulty statements regarding unlawful material.

    In countries where software program piracy is less popular, this technique is not as reliable for the cyber fraudulences. Alternatively, the Win32/Waledac.FJ popup alert may incorrectly declare to be stemming from a police organization as well as will certainly report having situated child pornography or other illegal information on the device.

    Win32/Waledac.FJ popup alert might incorrectly declare to be obtaining from a law enforcement organization and will certainly report having situated youngster porn or other illegal data on the device. The alert will likewise contain a demand for the user to pay the ransom money.

Technical details

File Info:

crc32: 31018DE4
md5: 19e17983b39fd2d8be1eaf23f9fc2012
name: 19E17983B39FD2D8BE1EAF23F9FC2012.mlw
sha1: 662f9451e0643e0d8215fca75bbc9aa9dec3866d
sha256: 858426eefc9c39687563483865d029357d72651c96e4e5c99a1334737d1d63c7
sha512: fd25fe9b20c209194ee0356c4b5c5c001f21c61e96f740f48915df92096fdebcfbf8d8ece3cc1fcd6923fa419df176071f9211693f698a0c070eac0a2c1fee5e
ssdeep: 6144:3vGr+57OeEzZSGz+4z2pQicTQ0JrQu+Oomg3WdgTgoSOla/i+8:3vJyzDtqHyQ0JzDoPGdFoSUaK
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

LegalCopyright: Copyright (C) 2010
InternalName: UIScanner
FileVersion: 13,0,21,1
CompanyName: BitDefender S.R.L.
ProductName: BitDefender 2010
ProductVersion: 13,0,18,344
FileDescription: BitDefender Antivirus Scanner
OriginalFilename: uiscan.exe
Translation: 0x0409 0x04b0

Win32/Waledac.FJ also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 001e60c61 )
DrWeb Trojan.Fakealert.21231
Cynet Malicious (score: 100)
ALYac Gen:Heur.FKP.1
Cylance Unsafe
Zillya Trojan.FakeAV.Win32.84804
Alibaba Trojan:Win32/Obfuscator.0e2ba627
K7GW Trojan ( 001e60c61 )
Cybereason malicious.3b39fd
Cyren W32/S-bdcee22a!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Waledac.FJ
APEX Malicious
Avast Win32:Mystic
ClamAV Win.Trojan.Fakeav-48780
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Heur.FKP.1
NANO-Antivirus Trojan.Win32.ULPM.farbzc
SUPERAntiSpyware Trojan.Agent/Gen-FakeAlert
MicroWorld-eScan Gen:Heur.FKP.1
Tencent Win32.Trojan-psw.Flashapp.Ebrd
Ad-Aware Gen:Heur.FKP.1
Sophos ML/PE-A + Mal/FakeAV-MR
Comodo Suspicious@#30a67k3m9hukw
BitDefenderTheta Gen:NN.ZexaF.34692.pmKfaetVhBuS
VIPRE Trojan.Win32.Ransom.do (v)
TrendMicro TROJ_FAKEAV.SMWR
McAfee-GW-Edition FakeAV-SecurityTool.jr
FireEye Generic.mg.19e17983b39fd2d8
Emsisoft Gen:Heur.FKP.1 (B)
SentinelOne Static AI – Suspicious PE
Webroot none
Avira TR/Crypt.XPACK.Gen2
Antiy-AVL Trojan/Generic.ASMalwS.1840611
Microsoft Program:Win32/Wacapew.C!ml
Arcabit Trojan.FKP.1
AegisLab Hacktool.Win32.FlashApp.3!c
GData Gen:Heur.FKP.1
McAfee FakeAV-SecurityTool.jr
MAX malware (ai score=100)
VBA32 Trojan.ExpProc.014
Panda Generic Malware
TrendMicro-HouseCall TROJ_FAKEAV.SMWR
Rising Trojan.Bulta!8.35D (CLOUD)
Yandex Trojan.FlashApp!f0HmNPeCGLw
Ikarus Trojan.Win32.Yakes
MaxSecure Trojan.Yakes.dwnc
Fortinet W32/RansomTimer.fam!tr
AVG Win32:Mystic
Paloalto generic.ml

How to remove Win32/Waledac.FJ 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/Waledac.FJ 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/Waledac.FJ 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: http://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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