What is Win32/Delf.QAI infection?

In this article you will certainly locate about the definition of Win32/Delf.QAI and also its negative impact on your computer. Such ransomware are a form of malware that is specified by online fraudulences to require paying the ransom by a sufferer.

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In the majority of the situations, Win32/Delf.QAI ransomware will certainly advise its victims to launch funds transfer for the purpose of reducing the effects of the modifications that the Trojan infection has presented to the target’s tool.

Win32/Delf.QAI 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.
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • 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.
  • 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;
  • Executed a process and injected code into it, probably while unpacking;
  • 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 files found on the target’s disk drive — so the sufferer can no more use the data;
  • Preventing regular 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.


The most typical channels where Win32/Delf.QAI Ransomware are infused are:

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

As quickly as the Trojan is efficiently injected, it will certainly either cipher the data on the victim’s computer or protect against the tool from working in a correct way – while additionally positioning a ransom money note that mentions the demand for the victims to impact the settlement for the purpose of decrypting the records or restoring the file system back to the preliminary condition. In many circumstances, the ransom note will certainly show up when the customer restarts the PC after the system has currently been damaged.

Win32/Delf.QAI circulation channels.

In numerous corners of the globe, Win32/Delf.QAI expands by leaps and bounds. Nonetheless, the ransom notes as well as techniques of extorting the ransom money amount may differ relying on particular regional (regional) setups. The ransom notes as well as techniques of obtaining the ransom quantity may differ depending on certain local (local) setups.

Ransomware injection

For instance:

    Faulty informs concerning unlicensed software program.

    In specific locations, the Trojans typically wrongfully report having actually discovered some unlicensed applications allowed on the sufferer’s device. The sharp then demands the user to pay the ransom.

    Faulty statements regarding prohibited web content.

    In countries where software piracy is less prominent, this method is not as efficient for the cyber frauds. Additionally, the Win32/Delf.QAI popup alert might wrongly declare to be deriving from a law enforcement organization and will certainly report having situated kid pornography or other prohibited data on the device.

    Win32/Delf.QAI popup alert might wrongly assert to be deriving from a legislation enforcement institution as well as will certainly report having situated kid porn or various other unlawful information on the tool. The alert will likewise include a requirement for the individual to pay the ransom.

Technical details

File Info:

crc32: A4CEE172
md5: 003bd87db0ce10dd769c4fb1c21e8127
name: 003BD87DB0CE10DD769C4FB1C21E8127.mlw
sha1: 3babcb4fabcc1a40d680749dc383c46e356200bd
sha256: 85d7f93dde641da6e8a1066e1fc516b91c128670ac4a4f2a93d54b79aaff20f5
sha512: 9cb9524e9ef8ce5485bdb0d901c75d9307fe713a323c9923a791a1908693c9b31c51b98ac631a3213e60fd1c185ceab6e9e0bae8654bfe44c6c23b3b8de0f41c
ssdeep: 1536:0bY1j7qWyXfUWX4QRrUp1HnnHMO5PWHYwoYNexy59yhhBqPavNZh5f0fx:yqj7qWyXsg4uQxH95eHYwKx6yAENZh5
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

Translation: 0x0409 0x04b0
LegalCopyright: kosquagm xalytmfezwa
InternalName: kg
FileVersion: 27.02.0005
CompanyName: q
LegalTrademarks: pylinhr bdzcdpjuif
Comments: gjvubmay
ProductName: ni
ProductVersion: 27.02.0005
FileDescription: dr
OriginalFilename: kg.exe

Win32/Delf.QAI also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
DrWeb Trojan.Siggen2.40642
Cynet Malicious (score: 100)
ALYac Trojan.Generic.6561780
Cylance Unsafe
Zillya Trojan.PornoBlocker.Win32.1655
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/PornoBlocker.d45735e8
Cybereason malicious.db0ce1
Cyren W32/VBInject.1!Generic
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/Delf.QAI
APEX Malicious
Avast Win32:Trojan-gen
ClamAV Win.Trojan.Pornoblocker-847
BitDefender Trojan.Generic.6561780
NANO-Antivirus Trojan.Win32.Delf.ecamer
MicroWorld-eScan Trojan.Generic.6561780
Tencent Win32.Trojan.Pornoblocker.Bdz
Ad-Aware Trojan.Generic.6561780
Sophos ML/PE-A + Mal/VBCheMan-C
Comodo Suspicious@#2a93mnnie685q
BitDefenderTheta AI:Packer.E198927720
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_PornoBlocker.R002C0OB821
FireEye Trojan.Generic.6561780
Emsisoft Trojan.Generic.6561780 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.PornoBlocker.q
Webroot W32.Malware.Gen
Avira TR/Dropper.Gen
eGambit Generic.Malware
Microsoft Trojan:Win32/Malagent
AegisLab Trojan.Win32.VB.lje7
GData Trojan.Generic.6561780
McAfee Artemis!003BD87DB0CE
MAX malware (ai score=99)
VBA32 Hoax.PornoBlocker
Panda Generic Malware
TrendMicro-HouseCall Ransom_PornoBlocker.R002C0OB821
Rising Ransom.PornoBlocker!8.24E (CLOUD)
Yandex Trojan.PornoBlocker!o2j24AwcL7s
Ikarus Trojan-Dropper.SuspectCRC
Fortinet W32/VBKrypt.CZLQ!tr
AVG Win32:Trojan-gen

How to remove Win32/Delf.QAI 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/Delf.QAI 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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Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Win32/Delf.QAI you can always ask me in the comments for getting help.

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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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