Win32:AdwareSig [Adw]

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

What is Win32:AdwareSig [Adw] infection?

In this short article you will certainly find regarding the definition of Win32:AdwareSig [Adw] and its negative impact on your computer system. Such ransomware are a form of malware that is specified by online frauds to demand paying the ransom by a target.

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In the majority of the situations, Win32:AdwareSig [Adw] infection will advise its targets to launch funds transfer for the purpose of counteracting the amendments that the Trojan infection has introduced to the victim’s device.

Win32:AdwareSig [Adw] Summary

These adjustments 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.
  • Presents an Authenticode digital signature;
  • 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.;
  • Expresses interest in specific running processes;
  • 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.

  • 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.
  • 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;
  • Network activity contains more than one unique useragent.;
  • 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
  • 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 modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents situated on the sufferer’s hard disk — so the victim can no more use the information;
  • Preventing normal accessibility 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.

Win32:AdwareSig [Adw]

One of the most regular channels through which Win32:AdwareSig [Adw] Ransomware are infused are:

  • By ways of phishing e-mails;
  • As a repercussion of user winding up on a resource that hosts a harmful software application;

As soon as the Trojan is efficiently injected, it will either cipher the information on the victim’s PC or stop the tool from functioning in a correct manner – while additionally placing a ransom note that points out the need for the victims to effect the settlement for the purpose of decrypting the records or bring back the documents system back to the preliminary problem. In a lot of circumstances, the ransom money note will turn up when the client reboots the COMPUTER after the system has already been damaged.

Win32:AdwareSig [Adw] circulation channels.

In different edges of the world, Win32:AdwareSig [Adw] grows by jumps and also bounds. Nevertheless, the ransom notes and also techniques of extorting the ransom quantity may differ depending upon certain local (regional) settings. The ransom money notes as well as techniques of obtaining the ransom amount may differ depending on specific neighborhood (regional) setups.

Ransomware injection

As an example:

    Faulty signals regarding unlicensed software application.

    In specific locations, the Trojans typically wrongfully report having actually discovered some unlicensed applications made it possible for on the victim’s gadget. The alert after that demands the user to pay the ransom.

    Faulty statements about unlawful web content.

    In nations where software program piracy is less preferred, this approach is not as effective for the cyber scams. Alternatively, the Win32:AdwareSig [Adw] popup alert might wrongly declare to be originating from a police organization and will report having situated youngster porn or various other unlawful data on the tool.

    Win32:AdwareSig [Adw] popup alert might incorrectly assert to be obtaining from a regulation enforcement institution as well as will report having located kid porn or various other illegal data on the device. The alert will likewise contain a demand for the individual to pay the ransom money.

Technical details

File Info:

crc32: FA7265E1
md5: e8ed64f4b37e75e8ccdf89f06f4d1e25
name: E8ED64F4B37E75E8CCDF89F06F4D1E25.mlw
sha1: 69ae4ff80098aabb0e9f173baa9ade73b3260245
sha256: 7c21348acd348d5be2bde3081eaeb72dc2e481795e5c2b9cebbded740e07d476
sha512: ff331c8d2cac485a50462b1922cacfed669783b49e5da57d986246cc1e890af35c891f0081fbd1d0f3f36330fbfcf3f84e5a69feba1ff499f4b3c1e907e74357
ssdeep: 24576:ud3jC28zwCD00HxM0J2xTeFl84PldKBtQqIqr5klTBgv8jXu7Fmrveg:UzOzwCDJHPYdIlDeyqINBgUjXu7Fmag
type: PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive

Version Info:

LegalCopyright: (c) 2018 Polarity Technologies Ltd
CompanyName: Polarity Technologies Ltd
ProductName: Desktop Search Bar
FileDescription: Desktop web search
OriginalFilename: SBInstaller
Translation: 0x0409 0x0000

Win32:AdwareSig [Adw] also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Adware ( 0053b2bb1 )
Elastic malicious (high confidence)
DrWeb Adware.Spigot.149
Cynet Malicious (score: 100)
ALYac Dropped:Trojan.GenericKD.34104561
Cylance Unsafe
Zillya Tool.WebToolbar.Win32.23
Sangfor Suspicious.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba AdWare:Win32/BrowserIO.20864567
K7GW Adware ( 0053b2bb1 )
Cybereason malicious.4b37e7
Symantec Trojan Horse
ESET-NOD32 a variant of Win32/Adware.BrowserIO.C
APEX Malicious
Avast Win32:AdwareSig [Adw]
ClamAV Win.Trojan.Generic-6931301-0
Kaspersky HEUR:Trojan-Ransom.Win32.Blocker.gen
BitDefender Dropped:Trojan.GenericKD.34104561
NANO-Antivirus Riskware.Win32.WebSearch.fjeunv
SUPERAntiSpyware Adware.Spigot/Variant
MicroWorld-eScan Dropped:Trojan.GenericKD.34104561
Tencent Win32.Trojan.Blocker.Anpt
Ad-Aware Dropped:Trojan.GenericKD.34104561
Sophos BrowserIO (PUA)
Comodo Application.Win32.BrowserIO.C@7v8oon
VIPRE Trojan.Win32.Generic!BT
Emsisoft Dropped:Trojan.GenericKD.34104561 (B)
Avira ADWARE/OnlineIO.Gen
GData Dropped:Trojan.GenericKD.34104561
AhnLab-V3 PUP/Win32.WebToolbar.R239059
Acronis suspicious
McAfee Artemis!E8ED64F4B37E
MAX malware (ai score=87)
VBA32 Adware.WebSearch
Malwarebytes Adware.BrowserIO
Panda Trj/CI.A
Rising Adware.BrowserIO!1.B395 (CLASSIC)
Yandex Trojan.GenAsa!GaST7sujVuk
Fortinet Riskware/BrowserIO
AVG Win32:AdwareSig [Adw]
Qihoo-360 Win32/Ransom.Blocker.HoMASQwA

How to remove Win32:AdwareSig [Adw] 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:AdwareSig [Adw] 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:AdwareSig [Adw] you can always ask me in the comments for getting help.

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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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