Written by Robert Bailey

What is TrojanDownloader:Win32/Renos infection?

In this post you will locate concerning the interpretation of TrojanDownloader:Win32/Renos as well as its adverse effect on your computer system. Such ransomware are a type of malware that is clarified by on the internet frauds to require paying the ransom money by a victim.

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In the majority of the instances, TrojanDownloader:Win32/Renos infection will advise its sufferers to initiate funds move for the objective of counteracting the modifications that the Trojan infection has actually presented to the victim’s gadget.

TrojanDownloader:Win32/Renos Summary

These alterations can be as adheres to:

  • 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.
  • 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.
  • 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.
  • 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.
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files situated on the victim’s hard disk — so the target can no more utilize the data. This is the typical behavior of malware known as ransomware that encrypts a victim’s files. The cybercriminal then demands a ransom from the victim to restore access to the data upon payment.
  • Preventing routine 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.

Related domains: Trojan.Win32.Ransom Trojan.Win32.Ransom Trojan.Win32.Ransom Trojan.Win32.Ransom Trojan.Win32.Ransom Trojan.Win32.Ransom


The most typical channels whereby TrojanDownloader:Win32/Renos Trojans are infused are:

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

As soon as the Trojan is effectively injected, it will either cipher the information on the target’s PC or stop the gadget from working in an appropriate way – while additionally putting a ransom note that states the demand for the victims to effect the settlement for the function of decrypting the documents or recovering the data system back to the initial problem. In the majority of instances, the ransom money note will certainly turn up when the client reboots the COMPUTER after the system has actually already been harmed.

TrojanDownloader:Win32/Renos circulation channels.

In different corners of the globe, TrojanDownloader:Win32/Renos grows by leaps as well as bounds. Nevertheless, the ransom money notes and methods of extorting the ransom money quantity might differ relying on particular regional (regional) setups. The ransom notes and also methods of obtaining the ransom quantity might vary depending on certain local (regional) setups.

Ransomware injection

For example:

    Faulty alerts concerning unlicensed software application.

    In specific locations, the Trojans frequently wrongfully report having detected some unlicensed applications made it possible for on the victim’s gadget. The alert after that demands the individual to pay the ransom money.

    Faulty declarations regarding illegal material.

    In countries where software piracy is less prominent, this technique is not as reliable for the cyber frauds. Additionally, the TrojanDownloader:Win32/Renos popup alert might wrongly claim to be originating from a law enforcement establishment and also will report having situated kid porn or other prohibited data on the device.

    TrojanDownloader:Win32/Renos popup alert may incorrectly claim to be acquiring from a regulation enforcement organization as well as will report having located child porn or other unlawful data on the tool. The alert will similarly have a requirement for the user to pay the ransom.

Technical details

File Info:

crc32: AF451B59
md5: 37c7a0e918bb34f28aabd919db3adb4c
name: 37C7A0E918BB34F28AABD919DB3ADB4C.mlw
sha1: 54dec64b872eb2e2a4ca5cf82b9aa661c67c4881
sha256: a9d443f73d06942738b1c03529ae920e5a7bd437240aa26e2c2d4c88e236bbe1
sha512: 26f31458a67eff6995babe67cd82e68de743c4eb560590f41132d9a2fd246f9cd02d2ca2b61a8080fef3d87b97c47d2cc1494eda8944c552e8533634c8c7b35e
ssdeep: 3072:d9QCl5seJvbzlZ3jdzgejHqgpJbBBEJf0/wwQTUbBBYvijpMLN79tMa4bs:d9QCzLJvbzHdTHx5BBZxZlMLNvB4
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright xa9 2010 RFirma7 All rights reserved.c
InternalName: 1tyodos5AG.exe
CompanyName: Sun Microsystems, Inc.
ProductName: E
FileDescription: IMacro setup jn
OriginalFilename: 1tyodos5AG.exe
Translation: 0x0409 0x04e4

TrojanDownloader:Win32/Renos also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetectGBM.malware.02
DrWeb Trojan.Siggen2.58252
MicroWorld-eScan Gen:Variant.Renos.60
CAT-QuickHeal Trojan.Renos.LN
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
SUPERAntiSpyware Trojan.Agent/Gen-Falint
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 005485311 )
BitDefender Gen:Variant.Renos.60
K7GW Trojan ( 005485311 )
CrowdStrike win/malicious_confidence_80% (D)
Arcabit Trojan.Renos.60
BitDefenderTheta Gen:NN.ZexaF.34574.py0@a8fW1Xki
Cyren W32/FakeAlert.OX.gen!Eldorado
Symantec Trojan.FakeAV!gen63
APEX Malicious
ClamAV Win.Trojan.Fraudload-4034
Kaspersky Trojan-Downloader.Win32.FraudLoad.ibp
NANO-Antivirus Trojan.Win32.TrjGen.eaict
Tencent Win32.Trojan-Downloader.Fraudload.vdf
Ad-Aware Gen:Variant.Renos.60
Sophos ML/PE-A + Mal/FakeAV-IZ
Comodo TrojWare.Win32.Kryptik.BQ@3xt3xs
F-Secure Trojan.TR/Kazy.dzzev
Zillya Downloader.FraudLoad.Win32.35717
TrendMicro Mal_FakeAV-55
Emsisoft Gen:Variant.Renos.60 (B)
SentinelOne Static AI – Suspicious PE
Avira TR/Kazy.dzzev
MAX malware (ai score=83)
Antiy-AVL Trojan[Downloader]/Win32.FraudLoad
Microsoft TrojanDownloader:Win32/Renos
ViRobot Trojan.Win32.A.Downloader.254976
ZoneAlarm Trojan-Downloader.Win32.FraudLoad.ibp
GData Gen:Variant.Renos.60
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.FakeAV.R8995
Acronis suspicious
VBA32 BScope.Trojan.Downloader
Malwarebytes Trojan.FraudPack
Panda Trj/Genetic.gen
ESET-NOD32 a variant of Win32/Kryptik.QTC
TrendMicro-HouseCall Mal_FakeAV-55
Rising Trojan.Win32.Generic.12A6DBFE (C64:YzY0OtJS/VHklHiq)
Yandex Trojan.DL.FraudLoad!8qb0mSEFxdI
Ikarus Trojan.Win32.Ransom
Fortinet W32/Krypt.QKV!tr
AVG Win32:Renos-BCM [Trj]
Cybereason malicious.918bb3
Avast Win32:Renos-BCM [Trj]
Qihoo-360 HEUR/QVM20.1.65BF.Malware.Gen

How to remove TrojanDownloader:Win32/Renos 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 TrojanDownloader:Win32/Renos 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 TrojanDownloader:Win32/Renos 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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