MSIL/KillFiles.Y

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

What is MSIL/KillFiles.Y infection?

In this short article you will certainly locate regarding the definition of MSIL/KillFiles.Y and also its negative effect on your computer system. Such ransomware are a form of malware that is specified by on the internet frauds to demand paying the ransom money by a target.

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In the majority of the instances, MSIL/KillFiles.Y infection will advise its victims to launch funds transfer for the purpose of neutralizing the amendments that the Trojan infection has introduced to the sufferer’s tool.

MSIL/KillFiles.Y Summary

These alterations can be as follows:

  • 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.
  • A process created a hidden window;
  • Uses Windows utilities for basic functionality;
  • Exhibits behavior characteristic of iSpy Keylogger;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the files found on the target’s disk drive — so the victim can no longer utilize the data;
  • 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.

MSIL/KillFiles.Y

The most regular channels where MSIL/KillFiles.Y Ransomware are injected are:

  • By means of phishing emails;
  • As a repercussion of customer ending up on a source that organizes a malicious software application;

As soon as the Trojan is effectively injected, it will either cipher the information on the target’s computer or prevent the device from operating in a correct way – while also positioning a ransom money note that mentions the demand for the targets to effect the settlement for the objective of decrypting the papers or recovering the documents system back to the preliminary condition. In many instances, the ransom money note will certainly show up when the client reboots the COMPUTER after the system has actually already been harmed.

MSIL/KillFiles.Y distribution channels.

In different corners of the world, MSIL/KillFiles.Y expands by jumps and also bounds. Nonetheless, the ransom money notes and techniques of extorting the ransom money amount may differ relying on particular neighborhood (regional) setups. The ransom notes and tricks of obtaining the ransom quantity may differ depending on specific local (local) settings.

Ransomware injection

As an example:

    Faulty signals about unlicensed software application.

    In certain locations, the Trojans typically wrongfully report having actually spotted some unlicensed applications allowed on the target’s device. The sharp then demands the individual to pay the ransom.

    Faulty statements concerning illegal web content.

    In nations where software piracy is much less popular, this method is not as efficient for the cyber frauds. Additionally, the MSIL/KillFiles.Y popup alert might falsely declare to be deriving from a police establishment as well as will certainly report having located kid porn or other illegal data on the gadget.

    MSIL/KillFiles.Y popup alert may falsely claim to be obtaining from a legislation enforcement organization as well as will certainly report having situated youngster pornography or other unlawful data on the tool. The alert will similarly contain a requirement for the user to pay the ransom money.

Technical details

File Info:

crc32: 181EED91
md5: aa1b645e51e0d1dcfac0a46fe081d3d8
name: AA1B645E51E0D1DCFAC0A46FE081D3D8.mlw
sha1: 4e94aaa508166483c198fd7a372644eac65bb60d
sha256: 81374c1f86519bae5066290c3e54836d349dbe724f516679f79e0053a9ca9400
sha512: 971fd7ddc3f2cf3d0eb8b6623e58da97283ab6b95171e8185b8b33b9eb46e76c168b8fad857da40fc467e422b0c2c6869a4d50813e5b2dae007b33ebb5431bf9
ssdeep: 384:6tILupDvok8reHpav9xKG9Qpp8E9GUEKBqFUjwOF:6ttpToRrqg9xD9QnfTEWkOF
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: 1880
Assembly Version: 3.5.2.9
InternalName: whereis.exe
FileVersion: 1.7.2.7
CompanyName: schooool
Comments: whereis my home
ProductName: whereis
ProductVersion: 1.7.2.7
FileDescription: whereis
OriginalFilename: whereis.exe

MSIL/KillFiles.Y also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 700000121 )
Elastic malicious (high confidence)
DrWeb Trojan.KillFiles.60933
Cynet Malicious (score: 90)
ALYac Trojan.Ransom.SamSam
Cylance Unsafe
Sangfor Ransom.MSIL.Samas.mt
CrowdStrike win/malicious_confidence_60% (D)
K7GW Trojan ( 700000121 )
Cybereason malicious.e51e0d
Cyren W32/Azorult.D.gen!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 MSIL/KillFiles.Y
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan-Ransom.Win32.Agent.ixe
BitDefender Gen:Variant.Ransom.Samas.9
NANO-Antivirus Trojan.Win32.KillFiles.elwkqq
ViRobot Trojan.Win32.S.SamSam.18432
MicroWorld-eScan Gen:Variant.Ransom.Samas.9
Tencent Win32.Trojan.Agent.Llqx
Ad-Aware Gen:Variant.Ransom.Samas.9
Sophos Mal/Generic-R + Troj/MSIL-JHP
Comodo Malware@#1ll4ci9avsai5
BitDefenderTheta Gen:NN.ZemsilF.34628.bm0@aCdntid
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition Trojan-FLKG!AA1B645E51E0
FireEye Generic.mg.aa1b645e51e0d1dc
Emsisoft Gen:Variant.Ransom.Samas.9 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Agent.auqs
Webroot W32.Malware.Gen
Avira TR/Dropper.MSIL.Gen
eGambit Unsafe.AI_Score_94%
Kingsoft Win32.Troj.Generic_a.a.(kcloud)
Microsoft Ransom:MSIL/Samas
Arcabit Trojan.Ransom.Samas.9
AegisLab Trojan.Win32.Generic.4!c
GData Gen:Variant.Ransom.Samas.9
AhnLab-V3 Trojan/Win32.Samas.C1915755
McAfee Trojan-FLKG!AA1B645E51E0
MAX malware (ai score=100)
Panda Trj/GdSda.A
Rising Ransom.Samas!8.1C0E (CLOUD)
Ikarus Trojan.MSIL.KillFiles
Fortinet MSIL/KillFiles.Y!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Generic.HgIASQoA

How to remove MSIL/KillFiles.Y 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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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/KillFiles.Y 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/KillFiles.Y 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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