MSIL/TrojanDownloader.Tiny.RZ

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

What is MSIL/TrojanDownloader.Tiny.RZ infection?

In this short article you will certainly locate concerning the interpretation of MSIL/TrojanDownloader.Tiny.RZ and also its unfavorable impact on your computer. Such ransomware are a form of malware that is clarified by online scams to demand paying the ransom money by a target.

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Most of the situations, MSIL/TrojanDownloader.Tiny.RZ infection will certainly instruct its victims to initiate funds transfer for the function of counteracting the modifications that the Trojan infection has presented to the sufferer’s device.

MSIL/TrojanDownloader.Tiny.RZ Summary

These modifications 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.
  • 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
  • Attempts to create or modify system certificates;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers situated on the victim’s hard disk — so the sufferer can no longer make use of the information;
  • Preventing normal access to the target’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.
Similar behavior
Related domains
www64.zippyshare.comGen:Variant.Ransom.PassCrypt.1

MSIL/TrojanDownloader.Tiny.RZ

One of the most regular networks where MSIL/TrojanDownloader.Tiny.RZ are infused are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As a consequence of customer winding up on a source that holds a destructive software;

As quickly as the Trojan is effectively injected, it will either cipher the data on the target’s computer or prevent the gadget from functioning in an appropriate manner – while likewise putting a ransom note that mentions the requirement for the victims to impact the repayment for the purpose of decrypting the records or bring back the documents system back to the preliminary problem. In many circumstances, the ransom note will show up when the customer reboots the PC after the system has actually currently been harmed.

MSIL/TrojanDownloader.Tiny.RZ distribution channels.

In numerous corners of the globe, MSIL/TrojanDownloader.Tiny.RZ grows by leaps and bounds. Nonetheless, the ransom money notes and also tricks of obtaining the ransom quantity may vary depending upon certain local (local) setups. The ransom money notes and methods of extorting the ransom amount may vary depending on certain regional (local) setups.

Ransomware injection

For instance:

    Faulty alerts about unlicensed software application.

    In particular locations, the Trojans usually wrongfully report having actually spotted some unlicensed applications allowed on the sufferer’s device. The sharp after that requires the user to pay the ransom money.

    Faulty statements regarding unlawful content.

    In countries where software application piracy is much less popular, this approach is not as reliable for the cyber frauds. Alternatively, the MSIL/TrojanDownloader.Tiny.RZ popup alert might wrongly declare to be originating from a police establishment and will certainly report having located youngster porn or other prohibited information on the device.

    MSIL/TrojanDownloader.Tiny.RZ popup alert may falsely declare to be acquiring from a regulation enforcement organization as well as will report having located youngster porn or other illegal data on the gadget. The alert will in a similar way contain a requirement for the individual to pay the ransom.

Technical details

File Info:

crc32: C19D04B0
md5: 80bdb50572e37600c988ee26e4458ced
name: 80BDB50572E37600C988EE26E4458CED.mlw
sha1: 4584baadf6b5693f6c141b03d8b5428fcb71e903
sha256: ce1170be8c6158e303d346d704c11bb7536406ad77e8d6e6b7fba3a88d0d800d
sha512: cb57dd47e3b48025b4b655bdf572ae3dfbdd84a4725de71976ce6934169bc0da0527615038e4543eb2418349503c517bded751114924a9f19c03b318d9b01895
ssdeep: 192:oXAzAwdA2wX3HQYZSSk2pEiMTtnL+z24pzSYmIW1Y8D/jkgbBUuEgtMZ8:mw+2wX3JZyHLf4pmYMD/jhaubt6
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: Copyright xa9 2021
Assembly Version: 1.0.0.0
InternalName: svchost.exe
FileVersion: 1.0.0.0
CompanyName:
LegalTrademarks:
Comments:
ProductName: svchost
ProductVersion: 1.0.0.0
FileDescription: svchost
OriginalFilename: svchost.exe

MSIL/TrojanDownloader.Tiny.RZ also known as:

GridinSoftTrojan.Ransom.Gen
K7AntiVirusTrojan ( 00517fbc1 )
Elasticmalicious (high confidence)
CynetMalicious (score: 100)
ALYacGen:Variant.Ransom.PassCrypt.1
CylanceUnsafe
SangforTrojan.Win32.Save.a
K7GWTrojan ( 00517fbc1 )
Cybereasonmalicious.572e37
CyrenW32/PassCrypt.A.gen!Eldorado
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of MSIL/TrojanDownloader.Tiny.RZ
APEXMalicious
AvastWin32:GenMaliciousA-VFO [Trj]
KasperskyHEUR:Trojan.MSIL.Bingoml.gen
BitDefenderGen:Variant.Ransom.PassCrypt.1
MicroWorld-eScanGen:Variant.Ransom.PassCrypt.1
Ad-AwareGen:Variant.Ransom.PassCrypt.1
SophosMal/Generic-S
BitDefenderThetaGen:NN.ZemsilF.34688.am0@aCu056p
TrendMicroTROJ_GEN.R005C0WEA21
McAfee-GW-EditionArtemis!Trojan
FireEyeGeneric.mg.80bdb50572e37600
EmsisoftGen:Variant.Ransom.PassCrypt.1 (B)
SentinelOneStatic AI – Malicious PE
WebrootTrojanSpy:MSIL/VB.A
eGambitUnsafe.AI_Score_99%
GridinsoftTrojan.Win32.Gen.sd!n
ArcabitTrojan.Ransom.PassCrypt.1
GDataGen:Variant.Ransom.PassCrypt.1
McAfeeArtemis!80BDB50572E3
MAXmalware (ai score=81)
VBA32Trojan.MSIL.gen.a.1
MalwarebytesTrojan.Crypt.Generic
PandaTrj/GdSda.A
TrendMicro-HouseCallTROJ_GEN.R005C0WEA21
IkarusTrojan-Dropper.MSIL.Agent
FortinetMSIL/Agent.DFS!tr.dldr
AVGWin32:GenMaliciousA-VFO [Trj]

How to remove MSIL/TrojanDownloader.Tiny.RZ virus?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
Reasons why I would recommend GridinSoft1

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 MSIL/TrojanDownloader.Tiny.RZ 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 MSIL/TrojanDownloader.Tiny.RZ you can always ask me in the comments for getting help.

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References

  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  2. More information about GridinSoft products: https://gridinsoft.com/comparison

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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