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The Daily Insight

Ransom:MSIL/Crilock.A

Author

Rachel Ross

Updated on February 26, 2026

What is Ransom:MSIL/Crilock.A infection?

In this short article you will discover concerning the meaning of Ransom:MSIL/Crilock.A and also its unfavorable effect on your computer. Such ransomware are a kind of malware that is elaborated by online scams to demand paying the ransom by a target.

In the majority of the cases, Ransom:MSIL/Crilock.A virus will instruct its victims to initiate funds transfer for the purpose of neutralizing the modifications that the Trojan infection has introduced to the target’s tool.

Ransom:MSIL/Crilock.A Summary

These modifications can be as complies with:

  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records found on the target’s hard drive — so the victim can no more utilize the data;
  • Preventing normal accessibility 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.

Ransom:MSIL/Crilock.A

One of the most regular networks where Ransom:MSIL/Crilock.A Trojans 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 user ending up on a resource that holds a malicious software;

As soon as the Trojan is efficiently infused, it will certainly either cipher the information on the sufferer’s PC or avoid the device from operating in an appropriate way – while also placing a ransom money note that points out the need for the targets to impact the repayment for the objective of decrypting the files or recovering the documents system back to the first condition. In most instances, the ransom money note will certainly show up when the customer reboots the PC after the system has currently been harmed.

Ransom:MSIL/Crilock.A circulation networks.

In numerous edges of the world, Ransom:MSIL/Crilock.A grows by leaps as well as bounds. Nonetheless, the ransom notes as well as methods of obtaining the ransom amount may differ depending on certain regional (local) setups. The ransom notes and techniques of extorting the ransom money quantity might differ depending on certain local (regional) setups.

Ransomware injection

For example:

    Faulty alerts about unlicensed software application.

    In particular areas, the Trojans typically wrongfully report having actually discovered some unlicensed applications allowed on the target’s tool. The alert after that demands the user to pay the ransom.

    Faulty declarations concerning unlawful material.

    In countries where software application piracy is less preferred, this technique is not as reliable for the cyber fraudulences. Additionally, the Ransom:MSIL/Crilock.A popup alert may incorrectly claim to be stemming from a police institution and also will certainly report having located youngster pornography or various other illegal information on the device.

    Ransom:MSIL/Crilock.A popup alert may incorrectly claim to be deriving from a regulation enforcement organization and also will report having located child pornography or various other illegal information on the gadget. The alert will in a similar way have a demand for the customer to pay the ransom money.

Technical details

File Info:

crc32: 6F109692md5: 4f6011ff98c257441ed388c607c5c7fename: 4F6011FF98C257441ED388C607C5C7FE.mlwsha1: cff8ccf239f9513ee2272c7e710b3d40e4d17ae4sha256: 3d9af2cb75bf685209ca0cfcc84e7ece27a2007044c2dc4b0ddcbc7fb141ad3esha512: 1951009509dfaeccca69c1d94bd40e8f090174fa106b11f993c8cb5c1df7df345aa07978a1be927a12cf54de397c3379f91ba098d5b9aaa7c47e2fece5fe8329ssdeep: 12288:BuucC/r6vkvt5Bv1s+7+bK6ErCd46hDjHyVqZOf3OD/RC6UE1ygKraRVR8TqjN:EucEa+7ubPxj57/LkrU5type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0LegalCopyright: Copyright xa9 Microsoft Corporation 2002Assembly Version: 1.2.3566.4561InternalName: msunet.exeFileVersion: 1.2.3566.4561CompanyName: Microsoft CorporationProductName: Microsoft UpdateProductVersion: 1.2.3566.4561FileDescription: Microsoft UpdateOriginalFilename: msunet.exe

Ransom:MSIL/Crilock.A also known as:

GridinSoftTrojan.Ransom.Gen
K7AntiVirusTrojan ( 004900c61 )
Elasticmalicious (high confidence)
DrWebTrojan.DownLoader9.4864
CynetMalicious (score: 85)
CAT-QuickHealTrojanRansom.MSIL
ALYacTrojan.Ransom.AEI
CylanceUnsafe
ZillyaTrojan.Rsarist.Win32.1
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (W)
AlibabaRansom:MSIL/Rsarist.95d4b767
K7GWTrojan ( 004900c61 )
Cybereasonmalicious.f98c25
CyrenW32/Ransom.SEDP-3056
ESET-NOD32MSIL/Filecoder.E
ZonerTrojan.Win32.20565
APEXMalicious
AvastWin32:CryptoLocker-A [Trj]
KasperskyTrojan-Ransom.MSIL.Rsarist.b
BitDefenderTrojan.Ransom.AEI
NANO-AntivirusTrojan.Win32.Ransom.ejkzkz
ViRobotTrojan.Win32.S.Agent.972288
MicroWorld-eScanTrojan.Ransom.AEI
TencentMalware.Win32.Gencirc.114cc6d6
Ad-AwareTrojan.Ransom.AEI
SophosMal/Generic-R + Mal/Ransom-CD
ComodoMalware@#3hz2aci8nou0f
BitDefenderThetaGen:NN.ZemsilF.34608.7m0@aCC55An
VIPRETrojan.Win32.Generic!BT
TrendMicroWORM_CRILOCK.SM
McAfee-GW-EditionGeneric.rx
FireEyeTrojan.Ransom.AEI
EmsisoftTrojan.Ransom.AEI (B)
SentinelOneStatic AI – Malicious PE
WebrootW32.Suspicious.Heur
AviraTR/Rsarist.B
KingsoftWin32.Troj.Undef.(kcloud)
MicrosoftRansom:MSIL/Crilock.A
ArcabitTrojan.Ransom.AEI
AegisLabTrojan.MSIL.Rsarist.4!c
ZoneAlarmTrojan-Ransom.MSIL.Rsarist.b
GDataWin32.Trojan.Agent.77YUN4
TACHYONTrojan/W32.DN-Agent.972288.C
AhnLab-V3Trojan/Win32.Filecoder.C235767
McAfeeGeneric.rx
MAXmalware (ai score=100)
VBA32Hoax.MSIL.Rsarist
PandaTrj/WLT.A
TrendMicro-HouseCallWORM_CRILOCK.SM
RisingTrojan.Spy.Win32.Crilock.h (CLOUD)
IkarusTrojan-Ransomer.CQA
eGambitUnsafe.AI_Score_99%
FortinetMSIL/Filecoder.E!tr
AVGWin32:CryptoLocker-A [Trj]
Paloaltogeneric.ml
Qihoo-360Win32/Worm.CryptoLock.HwMAH58A

How to remove Ransom:MSIL/Crilock.A virus?

There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft">2.

Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

Download GridinSoft Anti-Malware

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 Ransom:MSIL/Crilock.A 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 Ransom:MSIL/Crilock.A you can always ask me in the comments for getting help.

References

  1. GridinSoft Anti-Malware Review from HowToFix site:
  2. More information about GridinSoft products: