Trojan-Ransom.Win32.Cryptodef.xsa

Written by Robert Bailey

What is Trojan-Ransom.Win32.Cryptodef.xsa infection?

In this post you will certainly discover regarding the meaning of Trojan-Ransom.Win32.Cryptodef.xsa and also its unfavorable influence on your computer system. Such ransomware are a form of malware that is clarified by on the internet frauds to require paying the ransom by a target.

GridinSoft Anti-Malware Review

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.
GridinSoft Anti-Malware 6-day trial available.
EULA | Privacy Policy | GridinSoft

In the majority of the situations, Trojan-Ransom.Win32.Cryptodef.xsa infection will advise its targets to launch funds transfer for the purpose of counteracting the changes that the Trojan infection has introduced to the victim’s device.

Trojan-Ransom.Win32.Cryptodef.xsa Summary

These alterations can be as complies with:

  • 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.
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • Injection with CreateRemoteThread in a remote process;
  • 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.
  • Mimics the system’s user agent string for its own requests;
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic;
  • Performs some HTTP requests;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Looks up the external IP address;
  • Uses Windows utilities for basic functionality;
  • Executed a process and injected code into it, probably while unpacking;
  • Deletes its original binary from disk;
  • Attempts to delete volume shadow copies;
  • Attempts to stop active services;
  • Modifies boot configuration settings;
  • Installs itself for autorun at Windows startup. There is simple tactic using the Windows startup folder located at:
    C:\Users\[user-name]\AppData\Roaming\Microsoft\Windows\StartMenu\Programs\Startup. Shortcut links (.lnk extension) placed in this folder will cause Windows to launch the application each time [user-name] logs into Windows.

    The registry run keys perform the same action, and can be located in different locations:

    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Creates a copy of itself;
  • Attempts to disable System Restore. System Restore function – allows you to revert the computer’s state (system files, applications, and system settings) to that of a previous point in time, which can be used to recover after a virus attack.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the files situated on the victim’s disk drive — so the sufferer can no more use the information;
  • 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.
Similar behavior
Related domains
ip-addr.es Ransom.Win32.Cryptodef.8
myexternalip.com Ransom.Win32.Cryptodef.8
curlmyip.com Ransom.Win32.Cryptodef.8
conopizzachile.com Ransom.Win32.Cryptodef.8
bryanfross.com Ransom.Win32.Cryptodef.8
aplikacii.com Ransom.Win32.Cryptodef.8
gayphonesexboys.com Ransom.Win32.Cryptodef.8
misssupranationalthailand.com Ransom.Win32.Cryptodef.8
ferijalnirs.com Ransom.Win32.Cryptodef.8
chadwondermagic.com Ransom.Win32.Cryptodef.8
eduvantage.com Ransom.Win32.Cryptodef.8
kwiatpaproci.mazury.pl Ransom.Win32.Cryptodef.8
charlescrosson.com Ransom.Win32.Cryptodef.8
grizzlysts.com Ransom.Win32.Cryptodef.8
kesbuk.cz Ransom.Win32.Cryptodef.8
fashionpeople.com.br Ransom.Win32.Cryptodef.8
cafejapan.com Ransom.Win32.Cryptodef.8
motored.pl Ransom.Win32.Cryptodef.8
paperplane.co.id Ransom.Win32.Cryptodef.8
biz-brokerage.com Ransom.Win32.Cryptodef.8
infrontofmycamera.com Ransom.Win32.Cryptodef.8
oscotec.com Ransom.Win32.Cryptodef.8
comoaprenderamaquillarse.com Ransom.Win32.Cryptodef.8
couponsonakeychain.com Ransom.Win32.Cryptodef.8
miiart-jewelry.com Ransom.Win32.Cryptodef.8
charityfross.com Ransom.Win32.Cryptodef.8
glamazona.com Ransom.Win32.Cryptodef.8
clever-x.com Ransom.Win32.Cryptodef.8
shipedtoyou.com Ransom.Win32.Cryptodef.8
communityneuroclinic.com Ransom.Win32.Cryptodef.8
grpgroup.co.il Ransom.Win32.Cryptodef.8
homestyle1974.com Ransom.Win32.Cryptodef.8
elanahmias.com Ransom.Win32.Cryptodef.8
connectao.com Ransom.Win32.Cryptodef.8
idea-lab.kz Ransom.Win32.Cryptodef.8

Trojan-Ransom.Win32.Cryptodef.xsa

The most common channels through which Trojan-Ransom.Win32.Cryptodef.xsa Trojans are infused are:

  • By methods of phishing emails;
  • As a repercussion of individual ending up on a resource that organizes a harmful software application;

As quickly as the Trojan is successfully infused, it will certainly either cipher the data on the victim’s PC or avoid the gadget from working in a correct fashion – while likewise positioning a ransom money note that states the requirement for the sufferers to impact the payment for the objective of decrypting the papers or recovering the data system back to the first condition. In the majority of instances, the ransom note will certainly show up when the customer reboots the PC after the system has actually currently been damaged.

Trojan-Ransom.Win32.Cryptodef.xsa circulation channels.

In different edges of the world, Trojan-Ransom.Win32.Cryptodef.xsa expands by leaps and also bounds. Nevertheless, the ransom notes and also techniques of obtaining the ransom quantity may vary depending upon particular regional (local) setups. The ransom notes and techniques of obtaining the ransom quantity may vary depending on specific regional (local) settings.

Ransomware injection

For instance:

    Faulty signals about unlicensed software program.

    In specific areas, the Trojans usually wrongfully report having actually spotted some unlicensed applications enabled on the sufferer’s tool. The sharp then demands the customer to pay the ransom.

    Faulty statements about illegal web content.

    In nations where software program piracy is less preferred, this approach is not as effective for the cyber scams. Conversely, the Trojan-Ransom.Win32.Cryptodef.xsa popup alert might falsely assert to be deriving from a law enforcement institution and also will certainly report having situated kid pornography or other unlawful data on the gadget.

    Trojan-Ransom.Win32.Cryptodef.xsa popup alert may falsely assert to be acquiring from a regulation enforcement organization and will certainly report having situated kid porn or other unlawful information on the gadget. The alert will in a similar way contain a need for the customer to pay the ransom.

Technical details

File Info:

crc32: 8399B698
md5: 8a4502b284da4d60f2043e47a23ba12f
name: 8A4502B284DA4D60F2043E47A23BA12F.mlw
sha1: f51e0732186c1b7876b853a924486049b27fe77c
sha256: 9a1392f0556da10c1ca4da80967eea952d70dd71e56b7579fa668eefae98eb5c
sha512: 4d8c575dff191edc77044f49c5c3450ec585d05eaa582df8332abc9b65949caaaeff6460a2943c5484e278cd02b6e630f288d0847925f4b8d2b93ba3494c1723
ssdeep: 3072:wl5tTIscxvrj0R4Cbe69FB5xOovkzXhonQ:EIzvrj0RjfvTCzWn
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: 2012 Poster Software. All Rights Reserved.
InternalName: Pakistan
FileVersion: 16.8.11.15879
CompanyName: Poster Software
ProductName: Poster Pakistan
ProductVersion: 16.8
FileDescription: Poster Pakistan
OriginalFilename: PAKISTAN.EXE
Translation: 0x0409 0x04b0

Trojan-Ransom.Win32.Cryptodef.xsa also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.514
Cynet Malicious (score: 100)
Cylance Unsafe
Zillya Trojan.Cryptodef.Win32.1025
Sangfor Ransom.Win32.Cryptodef.8
CrowdStrike win/malicious_confidence_60% (D)
K7GW Trojan ( 0055e3ef1 )
K7AntiVirus Trojan ( 0055e3ef1 )
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/Filecoder.CryptoWall.D
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan-Ransom.Win32.Cryptodef.xsa
NANO-Antivirus Trojan.Win32.Cryptodef.dvfjia
Tencent Win32.Trojan.Cryptodef.Eawz
Sophos Mal/Generic-S
Comodo Malware@#2jvfydy8hzl5x
BitDefenderTheta Gen:NN.ZexaE.34688.iq0@a0qbe6gi
VIPRE Trojan.Win32.Generic!BT
TrendMicro TROJ_CRYPWALL.CPH1597
McAfee-GW-Edition Ransom-CWall.a
FireEye Generic.mg.8a4502b284da4d60
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Cryptodef.abv
Webroot Trojan.Dropper.Gen
Avira HEUR/AGEN.1110797
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Ransom:Win32/Crowti
AegisLab Trojan.Win32.Cryptodef.j!c
McAfee Ransom-CWall.a
MAX malware (ai score=99)
VBA32 Hoax.Cryptodef
Malwarebytes MachineLearning/Anomalous.100%
Panda Trj/CI.A
TrendMicro-HouseCall TROJ_CRYPWALL.CPH1597
Rising Ransom.Cryptodef!8.672 (CLOUD)
Yandex Trojan.Cryptodef!WEVdq8SjWZU
Ikarus Trojan.Win32.Filecoder
AVG Win32:Malware-gen
Paloalto generic.ml

How to remove Trojan-Ransom.Win32.Cryptodef.xsa 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 Trojan-Ransom.Win32.Cryptodef.xsa 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 Trojan-Ransom.Win32.Cryptodef.xsa you can always ask me in the comments for getting help.

Sending
User Review
0 (0 votes)
Comments Rating 0 (0 reviews)

References

  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.

Leave a Reply

Sending

This site uses Akismet to reduce spam. Learn how your comment data is processed.