Written by Robert Bailey

What is Win32/TrojanDownloader.Delf.DCU infection?

In this article you will certainly find about the definition of Win32/TrojanDownloader.Delf.DCU and its negative impact on your computer system. Such ransomware are a form of malware that is specified by on the internet frauds to require paying the ransom money by a victim.

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In the majority of the situations, Win32/TrojanDownloader.Delf.DCU virus will instruct its targets to start funds move for the function of neutralizing the amendments that the Trojan infection has introduced to the target’s gadget.

Win32/TrojanDownloader.Delf.DCU Summary

These adjustments can be as adheres to:

  • 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.
  • Unconventionial language used in binary resources: Hebrew;
  • 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.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records found on the target’s hard drive — so the target can no more use the information;
  • Preventing routine 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.


One of the most typical networks whereby Win32/TrojanDownloader.Delf.DCU Ransomware are injected are:

  • By means of phishing e-mails;
  • As a consequence of customer winding up on a source that organizes a destructive software program;

As quickly as the Trojan is efficiently infused, it will either cipher the data on the target’s computer or stop the device from functioning in a correct fashion – while additionally placing a ransom note that points out the need for the victims to effect the settlement for the function of decrypting the files or recovering the data system back to the preliminary problem. In the majority of circumstances, the ransom note will come up when the client reboots the PC after the system has already been harmed.

Win32/TrojanDownloader.Delf.DCU circulation channels.

In different edges of the globe, Win32/TrojanDownloader.Delf.DCU expands by leaps and bounds. However, the ransom notes and techniques of extorting the ransom money quantity may differ depending on particular local (local) settings. The ransom notes and also methods of extorting the ransom money amount might differ depending on particular local (local) setups.

Ransomware injection

For example:

    Faulty alerts regarding unlicensed software program.

    In certain areas, the Trojans often wrongfully report having actually identified some unlicensed applications made it possible for on the victim’s gadget. The sharp after that demands the individual to pay the ransom.

    Faulty statements about unlawful material.

    In countries where software piracy is much less preferred, this method is not as efficient for the cyber scams. Additionally, the Win32/TrojanDownloader.Delf.DCU popup alert may wrongly declare to be originating from a police organization and also will certainly report having located child pornography or other illegal data on the gadget.

    Win32/TrojanDownloader.Delf.DCU popup alert might wrongly declare to be acquiring from a regulation enforcement institution as well as will report having situated kid porn or various other prohibited information on the tool. The alert will likewise contain a demand for the user to pay the ransom.

Technical details

File Info:

crc32: 51232C97
md5: 54a4be7037ecdb031563998906a365cd
name: 54A4BE7037ECDB031563998906A365CD.mlw
sha1: e19e35a43087696fc4e7ac0dfeea4ea19fed8f28
sha256: 248eabc9c97d8c4994c26c88cf1806ea9274eb187e3eb0bae7ae8035c7f3b189
sha512: 515c6edb804b85cdaa610a275cfda7490884a42dc5c1585681d13d644c0e5b2ef363dff586e24e1a44410db85e49ee3e2c9737b865f1f9e84271dc5800dbd60d
ssdeep: 12288:9Esf2663Kqz+uv5+lBNErkAfhK6Pl7bDDnfvcfYM:KsO68So+svZb3YYM
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright xa9 2009 - 2013 Nir Sofer
InternalName: Document
FileVersion: 1.35
CompanyName: Document
ProductName: DocumentStartup
ProductVersion: 1.35
FileDescription: Document
OriginalFilename: Document
Translation: 0x0409 0x04b0

Win32/TrojanDownloader.Delf.DCU also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetectVM.malware1
MicroWorld-eScan Trojan.GenericKD.35971496
CAT-QuickHeal Trojan.Multi
McAfee Fareit-FZO!54A4BE7037EC
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
Sangfor Malware
BitDefender Trojan.GenericKD.35971496
Cybereason malicious.037ecd
Cyren W32/Trojan.AWBT-6701
Symantec ML.Attribute.HighConfidence
Avast Win32:Malware-gen
Kaspersky HEUR:Trojan-Ransom.Win32.Blocker.gen
Alibaba TrojanDownloader:Win32/Blocker.4af7dadc
ViRobot Trojan.Win32.Z.Highconfidence.723744
AegisLab Trojan.Win32.Blocker.j!c
Rising Downloader.Delf!8.16F (TFE:4:o1xB3CNbqnR)
Ad-Aware Trojan.GenericKD.35971496
Emsisoft Trojan.GenericKD.35971496 (B)
Comodo Malware@#2wywlg8y2zpa0
F-Secure Trojan.TR/AD.DbatLdr.bqqgo
Zillya Downloader.Delf.Win32.60402
TrendMicro Ransom_Blocker.R03BC0PA521
McAfee-GW-Edition Fareit-FZO!54A4BE7037EC
Sophos Mal/Generic-S
Ikarus Trojan-Downloader.Win32.Delf
eGambit PE.Heur.InvalidSig
Avira TR/AD.DbatLdr.bqqgo
Antiy-AVL Trojan[Ransom]/Win32.Blocker
Kingsoft Win32.Troj.Generic_a.a.(kcloud)
Microsoft Trojan:Win32/Ymacco.AA24
Gridinsoft Trojan.Win32.Downloader.oa
Arcabit Trojan.Generic.D224E1A8
ZoneAlarm HEUR:Trojan-Ransom.Win32.Blocker.gen
GData Trojan.GenericKD.35971496
Cynet Malicious (score: 90)
AhnLab-V3 Malware/Win32.Generic.C4287760
BitDefenderTheta Gen:NN.ZelphiF.34760.SG2@a4R!MumQ
ALYac Trojan.GenericKD.35971496
VBA32 TScope.Trojan.Delf
Malwarebytes Trojan.MalPack.DLF
Panda Trj/CI.A
ESET-NOD32 Win32/TrojanDownloader.Delf.DCU
TrendMicro-HouseCall Ransom_Blocker.R03BC0PA521
Tencent Win32.Trojan.Falsesign.Swbc
Fortinet W32/GenKryptik.DPIE!tr
Webroot W32.Trojan.Gen
AVG Win32:Malware-gen
CrowdStrike win/malicious_confidence_100% (W)
Qihoo-360 Win32/Trojan.Ransom.ed7

How to remove Win32/TrojanDownloader.Delf.DCU 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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The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

Download GridinSoft Anti-Malware.

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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.

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Press “Install” button.

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Once installed, Anti-Malware will automatically run.

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Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Win32/TrojanDownloader.Delf.DCU 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.

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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/TrojanDownloader.Delf.DCU 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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