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

What is Win32/TrojanDropper.Delf.OSQ infection?

In this article you will certainly discover concerning the meaning of Win32/TrojanDropper.Delf.OSQ as well as its adverse influence on your computer system. Such ransomware are a kind of malware that is specified by on-line frauds to require paying the ransom by a sufferer.

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Most of the situations, Win32/TrojanDropper.Delf.OSQ virus will advise its victims to launch funds transfer for the objective of neutralizing the amendments that the Trojan infection has actually introduced to the victim’s device.

Win32/TrojanDropper.Delf.OSQ Summary

These adjustments can be as complies with:

  • Executable code extraction;
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • Injection with CreateRemoteThread in a remote process;
  • Attempts to connect to a dead IP:Port (1 unique times);
  • Creates RWX memory;
  • Reads data out of its own binary image;
  • Drops a binary and executes it;
  • The binary likely contains encrypted or compressed data.;
  • Queries information on disks, possibly for anti-virtualization;
  • Executed a process and injected code into it, probably while unpacking;
  • Installs itself for autorun at Windows startup;
  • Anomalous binary characteristics;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the documents situated on the sufferer’s hard disk drive — so the victim can no longer make use of the information;
  • Preventing regular accessibility to the victim’s workstation;

Related domains: Gen:Variant.Ransom.Troldesh.251


The most common channels through which Win32/TrojanDropper.Delf.OSQ Ransomware Trojans are injected are:

  • By methods of phishing emails;
  • As a consequence of user ending up on a source that organizes a malicious software;

As soon as the Trojan is successfully injected, it will certainly either cipher the information on the target’s PC or protect against the gadget from working in a correct fashion – while likewise positioning a ransom money note that mentions the need for the sufferers to impact the payment for the purpose of decrypting the documents or restoring the file system back to the preliminary problem. In most circumstances, the ransom note will turn up when the client reboots the PC after the system has currently been damaged.

Win32/TrojanDropper.Delf.OSQ circulation channels.

In different corners of the world, Win32/TrojanDropper.Delf.OSQ grows by jumps and also bounds. Nevertheless, the ransom notes and techniques of extorting the ransom amount may vary relying on specific local (local) settings. The ransom money notes and also techniques of obtaining the ransom quantity might vary depending on particular local (regional) setups.

Ransomware injection

As an example:

    Faulty notifies concerning unlicensed software program.

    In certain areas, the Trojans commonly wrongfully report having found some unlicensed applications enabled on the target’s gadget. The sharp after that demands the customer to pay the ransom money.

    Faulty declarations regarding illegal material.

    In nations where software application piracy is less prominent, this approach is not as efficient for the cyber frauds. Conversely, the Win32/TrojanDropper.Delf.OSQ popup alert may incorrectly claim to be originating from a police establishment and also will report having located youngster pornography or various other illegal information on the tool.

    Win32/TrojanDropper.Delf.OSQ popup alert might incorrectly assert to be deriving from a law enforcement institution and also will report having located kid pornography or various other illegal data on the tool. The alert will likewise contain a requirement for the individual to pay the ransom.

Technical details

File Info:

crc32: 41C8DF6C
md5: e4f86ce3e8ed1427515443edb13bde27
name: E4F86CE3E8ED1427515443EDB13BDE27.mlw
sha1: 6ef0af88e92b33bf6f77a51ada02e44c7c09b9a7
sha256: 404890f96c3f442683da581a613683adbca57a09a5021cea9c01c4e23aaa7456
sha512: 60efaf0f6ebfac3b4eafec2477de89596d73cd7ff293486d35d383e0c3da7454c040781b8b5d1b8265ea2662709c3553ad9217198fee5bb50423993fe4accd26
ssdeep: 24576:tSWVOFV9HQUe6XvNQj5XWnoup5NxfOx1B//U2m:tCV9H7e6SdSaQ2m
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright Byte Technologies LLC.
FileVersion: 1.2
CompanyName: Byte Technologies LLC.
ProductName: ByteFence
ProductVersion: 1.2
FileDescription: ByteFence Real-time Protection Service
Translation: 0x0409 0x04b0

Win32/TrojanDropper.Delf.OSQ also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Riskware ( 0040eff71 )
Elastic malicious (high confidence)
DrWeb Trojan.PWS.Stealer.18836
Cynet Malicious (score: 99)
ALYac Gen:Variant.Ransom.Troldesh.251
Cylance Unsafe
Zillya Dropper.Delf.Win32.28521
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Ransom:Win32/Foreign.4d1b42de
K7GW Riskware ( 0040eff71 )
Cybereason malicious.3e8ed1
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/TrojanDropper.Delf.OSQ
Zoner Probably Heur.ExeHeaderH
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Malware.Delf-6964478-0
Kaspersky Trojan-Ransom.Win32.Foreign.ogft
BitDefender Gen:Variant.Ransom.Troldesh.251
NANO-Antivirus Trojan.Win32.Stealer.fpzdgi
MicroWorld-eScan Gen:Variant.Ransom.Troldesh.251
Tencent Win32.Trojan.Foreign.Amma
Ad-Aware Gen:Variant.Ransom.Troldesh.251
Sophos Mal/Generic-S
Comodo Malware@#2sa5mtf5stm1x
BitDefenderTheta Gen:NN.ZelphiF.34142.sP0aa4JLS7cO
VIPRE Trojan.Win32.Generic!BT
Emsisoft Gen:Variant.Ransom.Troldesh.251 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.Foreign.ggh
Avira HEUR/AGEN.1105368
eGambit Unsafe.AI_Score_99%
Antiy-AVL Trojan/Generic.ASMalwS.2B65E2C
Microsoft Exploit:Win32/ShellCode!ml
GData Gen:Variant.Ransom.Troldesh.251
AhnLab-V3 Malware/Win32.Generic.C3218657
McAfee Artemis!E4F86CE3E8ED
Malwarebytes Trojan.MalPack.SMY.Generic
Panda Trj/CI.A
Rising Malware.FakeXLS/ICON!1.9C3D (CLASSIC)
Yandex Trojan.Foreign!vqDvuRZA3UY
Ikarus Backdoor.Win32.Hupigon
MaxSecure Trojan.Malware.73688777.susgen
Fortinet W32/GenKryptik.EKLE!tr
AVG Win32:Malware-gen

How to remove Win32/TrojanDropper.Delf.OSQ 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/TrojanDropper.Delf.OSQ 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/TrojanDropper.Delf.OSQ 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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