Trojan:MSIL/DataStealer.MK!MSR
Olivia Norman
Updated on April 28, 2026
What is Trojan:MSIL/DataStealer.MK!MSR infection?
In this article you will discover about the definition of Trojan:MSIL/DataStealer.MK!MSR and its unfavorable effect on your computer. Such ransomware are a kind of malware that is elaborated by on-line frauds to require paying the ransom money by a victim.
In the majority of the situations, Trojan:MSIL/DataStealer.MK!MSR ransomware will certainly advise its victims to launch funds transfer for the objective of reducing the effects of the changes that the Trojan infection has presented to the target’s gadget.
Trojan:MSIL/DataStealer.MK!MSR Summary
These alterations can be as follows:
- 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.
- 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.
- The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
- 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 files situated on the victim’s hard disk drive — so the sufferer can no longer make use of the information;
- Preventing normal 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.
Trojan:MSIL/DataStealer.MK!MSR
The most regular channels through which Trojan:MSIL/DataStealer.MK!MSR Ransomware Trojans are injected are:
- By means of phishing emails;
- As a repercussion of user winding up on a source that holds a destructive software application;
As quickly as the Trojan is effectively injected, it will certainly either cipher the information on the target’s PC or stop the device from working in a proper way – while additionally putting a ransom note that points out the requirement for the victims to impact the payment for the objective of decrypting the papers or recovering the documents system back to the initial condition. In a lot of circumstances, the ransom note will turn up when the client reboots the COMPUTER after the system has currently been damaged.
Trojan:MSIL/DataStealer.MK!MSR circulation networks.
In different edges of the world, Trojan:MSIL/DataStealer.MK!MSR expands by jumps and bounds. Nevertheless, the ransom notes and methods of obtaining the ransom quantity might differ depending upon certain neighborhood (regional) settings. The ransom notes and techniques of obtaining the ransom quantity may vary depending on particular neighborhood (local) settings.
For instance:
Faulty informs about unlicensed software program.
In specific areas, the Trojans often wrongfully report having identified some unlicensed applications made it possible for on the target’s gadget. The sharp then requires the user to pay the ransom money.
Faulty statements concerning illegal web content.
In nations where software piracy is less popular, this technique is not as efficient for the cyber frauds. Conversely, the Trojan:MSIL/DataStealer.MK!MSR popup alert might falsely declare to be deriving from a police organization and also will report having situated youngster porn or other prohibited information on the device.
Trojan:MSIL/DataStealer.MK!MSR popup alert might falsely assert to be obtaining from a legislation enforcement establishment and will report having situated child porn or various other illegal information on the tool. The alert will in a similar way contain a demand for the user to pay the ransom.
Technical details
File Info:
crc32: 72396B4Fmd5: 82f3fa3a18aa8ae20687818635ea46a4name: 82F3FA3A18AA8AE20687818635EA46A4.mlwsha1: 1f82779e6e0b56d1a943a911b9a51e1008ae874dsha256: 0b4529f2d4f2fbd1050215f210bf4f8e23457606db28be596cbde0931e722af5sha512: 5acee81ae2b04b5c8790fad19daff59d7d0022cf47a57027cb643126278a9f36cd74864210d40c0e53641712a5d8742268af36613e3089b3f94b53ec9dda3fedssdeep: 12288:L5xdvoDYwbipHZZu/2D98zHAMJIaobBJSwiscMnw0IKEQy:L5Poa3cE+DKHF2Vr6type: PE32 executable (GUI) Intel 80386, for MS WindowsVersion Info:
0: [No Data]
Trojan:MSIL/DataStealer.MK!MSR also known as:
| GridinSoft | Trojan.Ransom.Gen |
| Bkav | W32.AIDetectVM.malware2 |
| Elastic | malicious (high confidence) |
| MicroWorld-eScan | Trojan.GenericKD.45181536 |
| FireEye | Generic.mg.82f3fa3a18aa8ae2 |
| McAfee | Fareit-FZO!82F3FA3A18AA |
| Cylance | Unsafe |
| K7AntiVirus | Trojan-Downloader ( 005754961 ) |
| BitDefender | Trojan.GenericKD.45181536 |
| K7GW | Trojan-Downloader ( 005754961 ) |
| Cybereason | malicious.e6e0b5 |
| Cyren | W32/Trojan.ZKDW-8210 |
| Symantec | ML.Attribute.HighConfidence |
| APEX | Malicious |
| Avast | Win32:TrojanX-gen [Trj] |
| Kaspersky | HEUR:Trojan-Ransom.Win32.Blocker.gen |
| Alibaba | TrojanDownloader:Win32/Blocker.79e1413f |
| AegisLab | Trojan.Win32.Blocker.j!c |
| Rising | Downloader.Delf!8.16F (TFE:4:vplTBWiojZC) |
| Ad-Aware | Trojan.GenericKD.45181536 |
| Sophos | Mal/Generic-S |
| F-Secure | |
| McAfee-GW-Edition | Fareit-FZO!82F3FA3A18AA |
| Emsisoft | Trojan.GenericKD.45181536 (B) |
| SentinelOne | Static AI – Malicious PE |
| eGambit | PE.Heur.InvalidSig |
| Avira | TR/Dldr.Delf.rwskf |
| Microsoft | Trojan:MSIL/DataStealer.MK!MSR |
| Gridinsoft | Ransom.Win32.Wacatac.oa |
| Arcabit | Trojan.Generic.D2B16A60 |
| ZoneAlarm | HEUR:Trojan-Ransom.Win32.Blocker.gen |
| GData | Trojan.GenericKD.45181536 |
| Cynet | Malicious (score: 100) |
| AhnLab-V3 | Malware/Win32.RL_Generic.R360818 |
| BitDefenderTheta | Gen:NN.ZelphiF.34700.XGY@a0Uc6Tci |
| ALYac | Trojan.GenericKD.45181536 |
| Panda | Trj/CI.A |
| ESET-NOD32 | Win32/TrojanDownloader.Delf.DCQ |
| TrendMicro-HouseCall | TROJ_GEN.R002H06LQ20 |
| Tencent | Malware.Win32.Gencirc.11b7ebbe |
| Ikarus | Trojan-Downloader.Win32.Delf |
| MaxSecure | Trojan.Malware.300983.susgen |
| Fortinet | W32/Delf.DCB!tr |
| AVG | Win32:TrojanX-gen [Trj] |
| Paloalto | generic.ml |
| CrowdStrike | win/malicious_confidence_100% (W) |
| Qihoo-360 | Win32/Trojan.Ransom.ed7 |
How to remove Trojan:MSIL/DataStealer.MK!MSR virus?
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.
You can download GridinSoft Anti-Malware by clicking the button below:
Download GridinSoft Anti-MalwareRun 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.
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.
Press “Install” button.
Once installed, Anti-Malware will automatically run.
Wait for the Anti-Malware scan to complete.
GridinSoft Anti-Malware will automatically start scanning your system for Trojan:MSIL/DataStealer.MK!MSR 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.
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.
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:
Full version of GridinSoft Anti-Malware
If the guide doesn’t help you to remove Trojan:MSIL/DataStealer.MK!MSR you can always ask me in the comments for getting help.
References
- GridinSoft Anti-Malware Review from HowToFix site:
- More information about GridinSoft products:
