Written by Robert Bailey

What is Backdoor:MSIL/CrimsonRat.A!MTB infection?

In this short article you will locate concerning the meaning of Backdoor:MSIL/CrimsonRat.A!MTB and its negative influence on your computer system. Such ransomware are a type of malware that is clarified by online fraudulences to demand paying the ransom by a victim.

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When we talk about the intrusion of unfamiliar programs into your computer’s work, the proverb “Forewarned is forearmed” describes the situation as accurately as possible. Gridinsoft Anti-Malware is exactly the tool that is always useful to have in your armory: fast, efficient, up-to-date. It is appropriate to use it as an emergency help at the slightest suspicion of infection.
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Most of the instances, Backdoor:MSIL/CrimsonRat.A!MTB ransomware will certainly instruct its sufferers to start funds move for the objective of counteracting the amendments that the Trojan infection has introduced to the victim’s device.

Backdoor:MSIL/CrimsonRat.A!MTB Summary

These modifications can be as adheres to:

  • 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.
  • Ciphering the records situated on the sufferer’s disk drive — so the victim can no longer make use of the data;
  • Preventing regular access 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.


One of the most normal channels through which Backdoor:MSIL/CrimsonRat.A!MTB are injected are:

  • By methods of phishing emails;
  • As an effect of customer ending up on a source that hosts a harmful software;

As quickly as the Trojan is effectively infused, it will certainly either cipher the information on the victim’s computer or protect against the tool from operating in a proper manner – while additionally putting a ransom note that discusses the demand for the targets to effect the settlement for the function of decrypting the files or recovering the file system back to the first problem. In most circumstances, the ransom note will turn up when the client restarts the COMPUTER after the system has already been harmed.

Backdoor:MSIL/CrimsonRat.A!MTB circulation channels.

In different edges of the world, Backdoor:MSIL/CrimsonRat.A!MTB grows by jumps as well as bounds. Nonetheless, the ransom notes and also methods of extorting the ransom amount may vary depending on certain neighborhood (local) settings. The ransom money notes and techniques of obtaining the ransom amount might vary depending on specific neighborhood (regional) setups.

Ransomware injection

As an example:

    Faulty informs about unlicensed software application.

    In particular areas, the Trojans frequently wrongfully report having actually discovered some unlicensed applications made it possible for on the victim’s device. The alert after that requires the individual to pay the ransom.

    Faulty declarations concerning unlawful content.

    In countries where software program piracy is much less prominent, this technique is not as efficient for the cyber scams. Additionally, the Backdoor:MSIL/CrimsonRat.A!MTB popup alert might falsely assert to be originating from a police organization and will certainly report having situated youngster porn or various other illegal information on the device.

    Backdoor:MSIL/CrimsonRat.A!MTB popup alert might falsely declare to be obtaining from a regulation enforcement establishment and also will report having situated youngster porn or various other prohibited information on the tool. The alert will likewise contain a need for the individual to pay the ransom.

Technical details

File Info:

crc32: E6DED1C3
md5: 2cd6db80e8dadce0c00f2417b6dedaf4
name: 2CD6DB80E8DADCE0C00F2417B6DEDAF4.mlw
sha1: 488f62cab74c7754fe8736b0fe8c12c75065789e
sha256: b9446d663f2aef34efdb579ae02e62923b5c3bc02b9d0fe537f5974ae439a422
sha512: a5373990db293797347fe054333ba66dadc4eb8551515a9e67652219240f0cee3112969b3087df5a18e5fe9ccc525bfb7091356ecef293b4053b8f6a18646d63
ssdeep: 6144:x9qJUWgqn97HMOXS2Ku4INExyl7th9qs:MUMFK9I+yl7Dgs
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: Copyright xa9 2020
Assembly Version:
InternalName: rvhdhimsa.exe
ProductName: rvhdhimsa
FileDescription: rvhdhimsa
OriginalFilename: rvhdhimsa.exe

Backdoor:MSIL/CrimsonRat.A!MTB also known as:

GridinSoft Trojan.Ransom.Gen
MicroWorld-eScan Trojan.GenericKD.35143051
CAT-QuickHeal TrojanRansom.MSIL
McAfee RDN/Ransom
Cylance Unsafe
AegisLab Trojan.MSIL.Foreign.j!c
Sangfor Malware
K7AntiVirus Trojan ( 0056d46b1 )
BitDefender Trojan.GenericKD.35143051
K7GW Trojan ( 0056d46b1 )
Arcabit Trojan.Generic.D2183D8B
TrendMicro Ransom_Foreign.R002C0PKA20
Cyren W32/Trojan.HLWT-5248
Symantec ML.Attribute.HighConfidence
APEX Malicious
Kaspersky HEUR:Trojan-Ransom.MSIL.Foreign.gen
Alibaba Backdoor:MSIL/CrimsonRat.2d6e40ed
Tencent Msil.Trojan.Foreign.Hvjq
Ad-Aware Trojan.GenericKD.35143051
Emsisoft Trojan.GenericKD.35143051 (B)
Comodo TrojWare.Win32.UMal.olxrl@0
F-Secure Heuristic.HEUR/AGEN.1136904
DrWeb BackDoor.CrimsonRat.31
VIPRE Trojan.Win32.Generic!BT
Invincea Mal/Generic-S
McAfee-GW-Edition RDN/Ransom
Sophos Mal/Generic-S
Jiangmin Trojan.MSIL.rnkp
MaxSecure Trojan.Malware.73715240.susgen
Avira HEUR/AGEN.1136904
MAX malware (ai score=83)
Antiy-AVL Trojan[Ransom]/MSIL.Foreign
Microsoft Backdoor:MSIL/CrimsonRat.A!MTB
ZoneAlarm HEUR:Trojan-Ransom.MSIL.Foreign.gen
GData Trojan.GenericKD.35143051
Cynet Malicious (score: 85)
BitDefenderTheta Gen:NN.ZemsilCO.34634.sq0@aGDenOp
ALYac Trojan.GenericKD.35143051
Panda Trj/GdSda.A
ESET-NOD32 a variant of MSIL/GenKryptik.EQXM
TrendMicro-HouseCall Ransom_Foreign.R002C0PKA20
Ikarus Trojan.MSIL.Krypt
eGambit Unsafe.AI_Score_95%
Fortinet MSIL/Agent.BNY!tr
AVG Win32:MalwareX-gen [Trj]
Avast Win32:MalwareX-gen [Trj]
CrowdStrike win/malicious_confidence_60% (D)
Qihoo-360 Generic/Trojan.Ransom.59a

How to remove Backdoor:MSIL/CrimsonRat.A!MTB ransomware?

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

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:

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 Backdoor:MSIL/CrimsonRat.A!MTB 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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Backdoor:MSIL/CrimsonRat.A!MTB you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site:
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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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