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The Daily Insight

Ransom:Win32/CruelSister!MSR

Author

Daniel Foster

Updated on May 11, 2026

What is Ransom:Win32/CruelSister!MSR infection?

In this article you will find concerning the meaning of Ransom:Win32/CruelSister!MSR and also its unfavorable influence on your computer. Such ransomware are a kind of malware that is specified by online scams to require paying the ransom money by a sufferer.

In the majority of the situations, Ransom:Win32/CruelSister!MSR virus will advise its sufferers to launch funds transfer for the purpose of neutralizing the amendments that the Trojan infection has actually presented to the sufferer’s gadget.

Ransom:Win32/CruelSister!MSR Summary

These alterations can be as follows:

  • A process created a hidden window;
  • Uses Windows utilities for basic functionality;
  • Network activity detected but not expressed in API logs;
  • Anomalous binary characteristics;
  • Ciphering the files found on the victim’s disk drive — so the target can no more make use of the information;
  • Preventing regular accessibility to the target’s workstation;

Ransom:Win32/CruelSister!MSR

The most regular networks where Ransom:Win32/CruelSister!MSR are injected are:

  • By means of phishing e-mails;
  • As a repercussion of customer winding up on a resource that hosts a destructive software program;

As soon as the Trojan is efficiently injected, it will certainly either cipher the information on the sufferer’s computer or prevent the device from functioning in an appropriate way – while additionally positioning a ransom money note that points out the requirement for the victims to effect the repayment for the function of decrypting the files or restoring the documents system back to the initial problem. In most instances, the ransom money note will show up when the client restarts the PC after the system has already been harmed.

Ransom:Win32/CruelSister!MSR circulation networks.

In different corners of the world, Ransom:Win32/CruelSister!MSR grows by jumps as well as bounds. Nonetheless, the ransom money notes as well as methods of obtaining the ransom quantity might vary depending upon certain regional (local) settings. The ransom money notes as well as tricks of obtaining the ransom money amount may differ depending on particular local (regional) setups.

Ransomware injection

For instance:

    Faulty notifies concerning unlicensed software.

    In particular locations, the Trojans often wrongfully report having detected some unlicensed applications made it possible for on the victim’s device. The alert after that demands the customer to pay the ransom money.

    Faulty declarations regarding prohibited material.

    In nations where software application piracy is much less prominent, this method is not as effective for the cyber scams. Additionally, the Ransom:Win32/CruelSister!MSR popup alert may falsely claim to be deriving from a police establishment and also will report having located youngster pornography or various other prohibited information on the gadget.

    Ransom:Win32/CruelSister!MSR popup alert might falsely claim to be acquiring from a law enforcement organization and will certainly report having located kid porn or various other prohibited information on the gadget. The alert will in a similar way consist of a need for the customer to pay the ransom money.

Technical details

File Info:

crc32: E1FEE7FDmd5: 748b61626e0015845bd7434ca03f27faname: 748B61626E0015845BD7434CA03F27FA.mlwsha1: f4a54594ff0789f2ba8670f19c1f4dfd6759aa08sha256: ede55d924a00a0d21f2253f6b0ce2be5fefac6262fd9a736f347e2467500725bsha512: 4392e13d57a9f7624644515f6daf016e151fabe9ec2aa2cff1d7a979d313aabb24ea6b952eaba69400b35acd383d7ef13e2e60fd9c22657dfeda0a9bac4f9432ssdeep: 1536:c7fPGykbOqjoHm4pICdfkLtAfupcWX50MxFY+yIOlnToIf1xWJS2iFuajjgCGb9M:yq6+ouCpk2mpcWJ0r+QNTBf1hFxgCGatype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Ransom:Win32/CruelSister!MSR also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusRiskware ( 0040eff71 )
LionicTrojan.Win32.Tiny.trFe
Elasticmalicious (high confidence)
DrWebTrojan.Encoder.31526
CynetMalicious (score: 100)
ALYacTrojan.Ransom.Filecoder
CylanceUnsafe
ZillyaTool.Lazagne.Win32.102
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (W)
AlibabaRansom:BAT/CruelSister.433f9075
K7GWRiskware ( 0040eff71 )
Cybereasonmalicious.26e001
SymantecDownloader
ESET-NOD32BAT/Filecoder.DG
ZonerTrojan.Win32.85523
APEXMalicious
AvastWin32:Trojan-gen
KasperskyTrojan-Ransom.Win32.Encoder.ids
BitDefenderTrojan.GenericKD.33656853
MicroWorld-eScanTrojan.GenericKD.33656853
TencentWin32.Trojan.Encoder.Ahex
Ad-AwareTrojan.GenericKD.33656853
SophosMal/Generic-S
VIPRETrojan.Win32.Generic!BT
McAfee-GW-EditionBehavesLike.Win32.Trojan.dt
FireEyeGeneric.mg.748b61626e001584
EmsisoftTrojan.GenericKD.33656853 (B)
SentinelOneStatic AI – Suspicious PE
JiangminTrojan.PowerShell.bj
WebrootW32.Trojan.Gen
eGambitUnsafe.AI_Score_98%
Antiy-AVLTrojan/Generic.ASMalwS.2B9EB3B
MicrosoftRansom:Win32/CruelSister!MSR
ArcabitTrojan.Generic.D2019015
ZoneAlarmTrojan-Ransom.Win32.Encoder.ids
GDataTrojan.GenericKD.33656853
AhnLab-V3Malware/Win32.Generic.C4083229
McAfeeArtemis!748B61626E00
MAXmalware (ai score=100)
MalwarebytesRansom.Cruel
PandaTrj/CI.A
RisingTrojan.Generic@ML.100 (RDMK:mFW4MRtVW4YcS1jo5CBWpw)
IkarusTrojan-Ransom.FileCrypter
MaxSecureWin.MxResIcn.Heur.Gen
FortinetW32/Filecoder.DG!tr.ransom
AVGWin32:Trojan-gen
Paloaltogeneric.ml
Qihoo-360Win32/Ransom.Encoder.HwUBEpsA

How to remove Ransom:Win32/CruelSister!MSR ransomware?

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:Win32/CruelSister!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.

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:Win32/CruelSister!MSR 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: