What is Ransom:Win32/Cryproto.B infection?

In this article you will discover about the interpretation of Ransom:Win32/Cryproto.B as well as its unfavorable impact on your computer. Such ransomware are a kind of malware that is clarified by online fraudulences to demand paying the ransom by a target.

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Most of the instances, Ransom:Win32/Cryproto.B infection will certainly instruct its sufferers to start funds move for the objective of neutralizing the amendments that the Trojan infection has actually introduced to the sufferer’s tool.

Ransom:Win32/Cryproto.B Summary

These modifications 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.
  • 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.
  • Ciphering the documents located on the sufferer’s hard disk drive — so the sufferer can no more make use of the data;
  • Preventing routine accessibility 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.


One of the most typical channels where Ransom:Win32/Cryproto.B Ransomware Trojans are injected are:

  • By ways of phishing emails;
  • As an effect of individual ending up on a source that holds a harmful software;

As soon as the Trojan is efficiently infused, it will either cipher the data on the target’s PC or prevent the device from operating in a correct way – while additionally positioning a ransom money note that states the requirement for the sufferers to impact the payment for the objective of decrypting the files or recovering the documents system back to the preliminary problem. In the majority of instances, the ransom note will show up when the client restarts the COMPUTER after the system has currently been harmed.

Ransom:Win32/Cryproto.B distribution channels.

In various corners of the world, Ransom:Win32/Cryproto.B expands by leaps and bounds. Nevertheless, the ransom notes and tricks of obtaining the ransom money quantity may vary relying on certain neighborhood (local) settings. The ransom notes and also methods of obtaining the ransom amount might differ depending on specific neighborhood (local) settings.

Ransomware injection

For instance:

    Faulty alerts regarding unlicensed software program.

    In particular locations, the Trojans usually wrongfully report having detected some unlicensed applications allowed on the sufferer’s tool. The alert then requires the customer to pay the ransom money.

    Faulty statements regarding unlawful web content.

    In nations where software application piracy is much less popular, this approach is not as effective for the cyber frauds. Alternatively, the Ransom:Win32/Cryproto.B popup alert may incorrectly assert to be originating from a police establishment and also will certainly report having situated child pornography or various other unlawful information on the gadget.

    Ransom:Win32/Cryproto.B popup alert might falsely declare to be acquiring from a law enforcement organization and also will report having located child pornography or other illegal information on the gadget. The alert will in a similar way have a requirement for the customer to pay the ransom.

Technical details

File Info:

crc32: A1F07240
md5: 7e73f3917b7e5c4b47e84f6084ef1e68
name: 7E73F3917B7E5C4B47E84F6084EF1E68.mlw
sha1: 408fd93dcaa2de74fc222e8b0c60a5c2aaf737b8
sha256: 8e75343a0b04581eaaf50624a88de2cb5e10173d4c41519e1e266fefc9042fe7
sha512: 432032846046b592cadf417e45150e75d31aeabfc6e3e05cd47539ff0965257518a69a0f8a4e1faae92941fc1b252637144c525e10f6bb275f4abcc92f435356
ssdeep: 3072:Qg4Rs8eMZQtnNB7yg2uUmIDJ0oTRmnfl94:Qg4RsXNtnNcnu+dE94
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Ransom:Win32/Cryproto.B also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 004f959f1 )
DrWeb Trojan.Encoder.5342
Cynet Malicious (score: 100)
ALYac Trojan.Ransom.RotorCrypt
Cylance Unsafe
Zillya Trojan.Rotor.Win32.46
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Cryproto.0d624931
K7GW Trojan ( 004f959f1 )
Cybereason malicious.17b7e5
Cyren W32/Kryptik.DPP.gen!Eldorado
Symantec Ransom.Troldesh
ESET-NOD32 Win32/Filecoder.RotoCrypt.C
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Trojan.Tofsee-6345150-0
Kaspersky HEUR:Trojan.Win32.Refinka.vho
BitDefender Trojan.Ransom.CerberKD.6112200
MicroWorld-eScan Trojan.Ransom.CerberKD.6112200
Tencent Win32.Trojan.Rotor.Akpf
Ad-Aware Trojan.Ransom.CerberKD.6112200
Sophos Mal/Generic-S + Mal/Elenoocka-E
Comodo Malware@#m6gyz99l2e4g
F-Secure Heuristic.HEUR/AGEN.1120889
BitDefenderTheta Gen:NN.ZexaF.34608.hmW@aKgGO3oi
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_CERBER.SMALY0
McAfee-GW-Edition BehavesLike.Win32.Ransomware.cc
FireEye Generic.mg.7e73f3917b7e5c4b
Emsisoft Trojan.Ransom.CerberKD.6112200 (B)
SentinelOne Static AI – Suspicious PE
Webroot W32.Trojan.Gen
Avira HEUR/AGEN.1120889
eGambit Unsafe.AI_Score_93%
Microsoft Ransom:Win32/Cryproto.B
Arcabit Trojan.Ransom.CerberKD.D5D43C8
AegisLab Trojan.Win32.Generic.4!c
ZoneAlarm HEUR:Trojan.Win32.Refinka.vho
GData Trojan.Ransom.CerberKD.6112200
Acronis suspicious
McAfee Ransomware-GEO!7E73F3917B7E
MAX malware (ai score=99)
VBA32 Trojan-Ransom.Rotor
Malwarebytes MachineLearning/Anomalous.100%
Panda Trj/GdSda.A
TrendMicro-HouseCall Ransom_CERBER.SMALY0
Rising Ransom.Cryptoff!8.E62C (CLOUD)
Yandex Trojan.GenAsa!6XO6mwzKwnM
Ikarus Backdoor.Win32.Vawtrak
Fortinet W32/GenKryptik.BHMX!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Generic.HgIASOgA

How to remove Ransom:Win32/Cryproto.B 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.

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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.

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Press “Install” button.

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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/Cryproto.B 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.

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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 Ransom:Win32/Cryproto.B you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
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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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