CryptTool.Agent

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is CryptTool.Agent infection?

In this short article you will certainly discover concerning the definition of CryptTool.Agent and its adverse impact on your computer. Such ransomware are a form of malware that is clarified by on-line frauds to demand paying the ransom money by a target.

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In the majority of the instances, CryptTool.Agent infection will instruct its victims to initiate funds transfer for the purpose of reducing the effects of the amendments that the Trojan infection has presented to the victim’s tool.

CryptTool.Agent Summary

These adjustments can be as complies with:

  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • 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
  • Exhibits possible ransomware file modification behavior;
  • Writes a potential ransom message to disk;
  • 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.
  • Likely virus infection of existing system binary;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers found on the target’s hard disk drive — so the target can no longer utilize the data;
  • Preventing normal access 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
z.whorecord.xyz Trojan-Ransom.Win32.Encoder.htl
a.tomx.xyz Trojan-Ransom.Win32.Encoder.htl

CryptTool.Agent

One of the most common channels through which CryptTool.Agent Ransomware 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 an effect of individual winding up on a resource that organizes a malicious software application;

As quickly as the Trojan is successfully injected, it will either cipher the data on the victim’s computer or avoid the gadget from operating in a proper manner – while additionally putting a ransom note that discusses the demand for the victims to impact the settlement for the function of decrypting the files or recovering the file system back to the preliminary problem. In a lot of instances, the ransom money note will turn up when the customer reboots the COMPUTER after the system has actually already been harmed.

CryptTool.Agent distribution networks.

In numerous corners of the world, CryptTool.Agent grows by leaps and bounds. Nevertheless, the ransom notes as well as techniques of extorting the ransom quantity may vary depending upon particular regional (local) setups. The ransom notes as well as techniques of obtaining the ransom money amount may vary depending on particular neighborhood (regional) setups.

Ransomware injection

For example:

    Faulty notifies about unlicensed software application.

    In certain areas, the Trojans often wrongfully report having actually detected some unlicensed applications made it possible for on the sufferer’s device. The alert then requires the user to pay the ransom.

    Faulty declarations about unlawful content.

    In nations where software piracy is much less popular, this technique is not as reliable for the cyber frauds. Additionally, the CryptTool.Agent popup alert might incorrectly assert to be deriving from a police organization and will report having situated kid porn or other prohibited data on the device.

    CryptTool.Agent popup alert might incorrectly declare to be obtaining from a law enforcement institution as well as will report having situated youngster porn or other illegal information on the gadget. The alert will likewise include a need for the individual to pay the ransom money.

Technical details

File Info:

crc32: 30F2F512
md5: cfd00ed27a81ca43e2fa762aabf07f10
name: 101_output.exe
sha1: aacd49ae67ee77c4401fda2af990864f964b994f
sha256: 1c410b97f8f0244a981bdb028ff93954a7a6495d4e64a16cb5142b9417497d30
sha512: 8b3d913044ac6d0ec2ff4cf235092fb10dc16cd2f837492b08e8bd92c5ca133d024be48db9fe853b1dcb3692e6e26f78f0150502762160703a3a472a084fa7aa
ssdeep: 6144:ZK6g8ITJp0yN90QEvgBDIWB2SXdJ+Eg27lTBkuo4HTd2Sy3WlNufwv1BWD7V4gJ:ZKUy906XB2U+DkWubHT18w6D7tJg6
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright 2018 x5nU5X9N6
Assembly Version: 4.0.0.0
InternalName: 9qYrXIow7
FileVersion: 4.0.0.0
CompanyName: bgufKEE 9EV2A8
LegalTrademarks: Kltz7yrpH QpGyFUvUt
ProductName: Memory Fixer
ProductVersion: 4.0.0.0
FileDescription: mj3Fw7qhk
AssemblyName: 19zSiko9g
AssemblyTitle: wUHPRYNlU
OriginalFilename: cbCSiXeVJ
Translation: 0x0409 0x04b0

CryptTool.Agent also known as:

GridinSoft Trojan.Ransom.Gen
DrWeb Tool.Crypter.47
MicroWorld-eScan Application.Crypter.H
McAfee Artemis!CFD00ED27A81
Cylance Unsafe
Sangfor Malware
K7AntiVirus Trojan ( 004f72f61 )
K7GW Trojan ( 004f72f61 )
Cybereason malicious.e67ee7
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:Trojan-gen
GData Win32.Trojan.Agent.SDNDUZ
Kaspersky Trojan-Ransom.Win32.Encoder.htl
Alibaba Ransom:Win32/generic.ali2000010
ViRobot Trojan.Win32.Z.Wacatac.509440.D
AegisLab Trojan.Multi.Generic.4!e
Rising PUA.Presenoker!8.F608 (CLOUD)
Sophos Mal/Generic-S
F-Secure Trojan.TR/AD.DeathRansom.uumrf
Invincea heuristic
McAfee-GW-Edition RDN/Generic PWS.y
Trapmine malicious.high.ml.score
FireEye Generic.mg.cfd00ed27a81ca43
Ikarus Trojan.Inject
Cyren W32/Trojan.TWFY-0703
Avira TR/AD.DeathRansom.uumrf
Endgame malicious (high confidence)
ZoneAlarm Trojan-Ransom.Win32.Encoder.htl
Microsoft Trojan:Win32/Occamy.C
Acronis suspicious
MAX malware (ai score=99)
Malwarebytes CryptTool.Agent
Panda Trj/CI.A
Zoner Trojan.Win32.80900
ESET-NOD32 a variant of Win32/Packed.CAB.AE
Tencent Win32.Trojan.Encoder.Tdzc
Fortinet W32/Encoder.HTL!tr.ransom
AVG Win32:Trojan-gen
Paloalto generic.ml
CrowdStrike win/malicious_confidence_90% (W)
Qihoo-360 Win32/Trojan.Ransom.ffb

How to remove CryptTool.Agent ransomware?

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

The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

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 CryptTool.Agent 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

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If the guide doesn’t help you to remove CryptTool.Agent you can always ask me in the comments for getting help.

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References

  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  2. More information about GridinSoft products: https://gridinsoft.com/comparison

About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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