Written by Robert Bailey

What is Ransom:Win32/DefrayCrypt infection?

In this article you will locate regarding the meaning of Ransom:Win32/DefrayCrypt and its adverse impact on your computer system. Such ransomware are a kind of malware that is specified by on-line fraudulences to require paying the ransom money by a sufferer.

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It is better to prevent, than repair and repent!

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, Ransom:Win32/DefrayCrypt infection will certainly advise its targets to launch funds transfer for the objective of counteracting the amendments that the Trojan infection has actually introduced to the target’s tool.

Ransom:Win32/DefrayCrypt Summary

These adjustments can be as complies with:

  • Injection (inter-process);
  • Injection (Process Hollowing);
  • 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.
  • Possible date expiration check, exits too soon after checking local time;
  • A process attempted to delay the analysis task.;
  • A named pipe was used for inter-process communication;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • A process created a hidden window;
  • Executed a very long command line or script command which may be indicative of chained commands or obfuscation;
  • Uses Windows utilities for basic functionality;
  • Attempts to delete volume shadow copies;
  • Executed a process and injected code into it, probably while unpacking;
  • Attempts to stop active services;
  • Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
  • Modifies boot configuration settings;
  • A potential decoy document was displayed to the user;
  • Writes a potential ransom message to disk;
  • Clears Windows events or logs;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the papers found on the target’s hard disk drive — so the sufferer can no more make use of the data;
  • Preventing routine accessibility 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 typical networks where Ransom:Win32/DefrayCrypt Ransomware Trojans are injected 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 winding up on a source that organizes a malicious software;

As soon as the Trojan is successfully injected, it will certainly either cipher the information on the sufferer’s computer or prevent the gadget from functioning in an appropriate manner – while also positioning a ransom money note that states the need for the victims to impact the payment for the function of decrypting the files or recovering the file system back to the preliminary problem. In most instances, the ransom note will certainly show up when the client reboots the COMPUTER after the system has currently been harmed.

Ransom:Win32/DefrayCrypt circulation channels.

In different edges of the world, Ransom:Win32/DefrayCrypt expands by leaps as well as bounds. Nonetheless, the ransom money notes and also tricks of obtaining the ransom money quantity may differ relying on specific neighborhood (local) setups. The ransom notes as well as methods of extorting the ransom quantity might differ depending on specific regional (regional) settings.

Ransomware injection

For example:

    Faulty informs concerning unlicensed software.

    In specific locations, the Trojans typically wrongfully report having spotted some unlicensed applications enabled on the target’s gadget. The alert then requires the individual to pay the ransom.

    Faulty statements concerning unlawful material.

    In nations where software piracy is much less preferred, this technique is not as efficient for the cyber fraudulences. Alternatively, the Ransom:Win32/DefrayCrypt popup alert might incorrectly assert to be stemming from a police organization and will report having located kid pornography or other illegal information on the tool.

    Ransom:Win32/DefrayCrypt popup alert may wrongly declare to be obtaining from a regulation enforcement establishment as well as will report having situated child pornography or other illegal information on the gadget. The alert will likewise contain a demand for the individual to pay the ransom.

Technical details

File Info:

crc32: BE962ACE
md5: d13f890034a68ccb4af4e0bf51e2b5ec
name: D13F890034A68CCB4AF4E0BF51E2B5EC.mlw
sha1: 84afde24c913c007b0c0490041b61877aa254737
sha256: 08cf8ed94cc1ef6ae23133f3e506a50d8aad9047c6fa74568a0373d991261aa4
sha512: 0065844527f3a3556bc50705f9d5608561a04e95a2d99b1a262db1094ca188425ef69f02f801eab2eaf74e14e027ceebb471a754192e195e51b6c57d3d7d45ce
ssdeep: 12288:jk2624GHVUBOSRVrHZfiZHJ2HFO/9xwrPgWyzZp+L7vN3:H6+VUBraeF8/tSh
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Ransom:Win32/DefrayCrypt also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Riskware ( 0040eff71 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.13975
Cynet Malicious (score: 90)
CAT-QuickHeal TrojanRansom.Agent
ALYac Trojan.Ransom.Defray
Cylance Unsafe
Zillya Trojan.Deshacop.Win32.879
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/DefrayCrypt.bc508874
K7GW Riskware ( 0040eff71 )
Cybereason malicious.034a68
Symantec Ransom.Defray
ESET-NOD32 Win32/Filecoder.NNJ
APEX Malicious
Avast FileRepMalware
ClamAV Win.Ransomware.Defray-6336140-2
Kaspersky Trojan-Ransom.Win32.Agent.jab
BitDefender Generic.Ransom.Defray.5E86C7F8
NANO-Antivirus Trojan.Win32.Encoder.fjnpzg
ViRobot Trojan.Win32.Defray.744960
MicroWorld-eScan Generic.Ransom.Defray.5E86C7F8
Tencent Malware.Win32.Gencirc.1149286d
Ad-Aware Generic.Ransom.Defray.5E86C7F8
Sophos Mal/Generic-R + Troj/Ransom-EQK
Comodo Malware@#1s03z87199ov5
BitDefenderTheta Gen:NN.ZexaF.34628.TuW@amKIgwdi
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_DEFRAY.A
McAfee-GW-Edition Ransom-DeFray!D13F890034A6
FireEye Generic.mg.d13f890034a68ccb
Emsisoft Generic.Ransom.Defray.5E86C7F8 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Deshacop.xs
Webroot W32.Trojan.GenKD
Avira HEUR/AGEN.1140493
eGambit Unsafe.AI_Score_99%
Kingsoft Win32.Troj.Generic_a.a.(kcloud)
Microsoft Ransom:Win32/DefrayCrypt
Arcabit Generic.Ransom.Defray.5E86C7F8
AegisLab Trojan.Win32.Agent.j!c
GData Generic.Ransom.Defray.5E86C7F8
AhnLab-V3 Trojan/Win32.Ransom.C2104118
Acronis suspicious
McAfee Ransom-DeFray!D13F890034A6
MAX malware (ai score=100)
VBA32 Hoax.Agent
Panda Trj/GdSda.A
TrendMicro-HouseCall Ransom_DEFRAY.A
Rising Ransom.Genasom!8.293 (C64:YzY0Ogc4eaGGPc5p)
Yandex Trojan.GenAsa!DS+xdKjbUw0
Ikarus Trojan-Ransom.Defray
Fortinet W32/Defray.FA01!tr.ransom
AVG FileRepMalware
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Defray.HwoCEpsA

How to remove Ransom:Win32/DefrayCrypt virus?

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

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.

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 Ransom:Win32/DefrayCrypt 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/DefrayCrypt 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/
  2. More information about GridinSoft products: https://gridinsoft.com/products/

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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