Trojan-Ransom.Win32.Blocker.jcen

Written by Robert Bailey

What is Trojan-Ransom.Win32.Blocker.jcen infection?

In this post you will discover concerning the interpretation of Trojan-Ransom.Win32.Blocker.jcen as well as its adverse impact on your computer system. Such ransomware are a form of malware that is specified by online fraudulences to demand paying the ransom money by a target.

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In the majority of the situations, Trojan-Ransom.Win32.Blocker.jcen ransomware will advise its sufferers to initiate funds move for the objective of neutralizing the modifications that the Trojan infection has introduced to the sufferer’s device.

Trojan-Ransom.Win32.Blocker.jcen Summary

These adjustments can be as follows:

  • Attempts to connect to a dead IP:Port (1 unique times);
  • Starts servers listening on 0.0.0.0:13960;
  • 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.
  • 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;
  • Sniffs keystrokes;
  • Attempts to stop active services;
  • A process attempted to delay the analysis task by a long amount of time.;
  • 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;
  • 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.
  • Creates a copy of itself;
  • Attempts to disable UAC.

    User Account Control or just UAC is a part of the Windows security system which prevents apps from making unwanted changes on PC.

    UAC includes several technologies 1:

    • File and egistry Virtualization;
    • Same-desktop Elevation;
    • Filtered Token;
    • User Interface Privilege Isolation;
    • Protected Mode Internet Explorer;
    • Installer Detection;
  • Attempts to modify UAC prompt behavior;
  • Ciphering the records situated on the target’s hard disk drive — so the sufferer can no longer utilize 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.
Similar behavior
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Trojan-Ransom.Win32.Blocker.jcen

One of the most normal networks whereby Trojan-Ransom.Win32.Blocker.jcen are injected are:

  • By means of phishing emails;
  • As a repercussion of customer ending up on a source that hosts a destructive software application;

As quickly as the Trojan is efficiently infused, it will either cipher the data on the sufferer’s PC or prevent the gadget from functioning in an appropriate fashion – while likewise positioning a ransom money note that mentions the requirement for the sufferers to impact the payment for the purpose of decrypting the records or restoring the file system back to the initial problem. In a lot of instances, the ransom note will certainly turn up when the customer reboots the COMPUTER after the system has already been harmed.

Trojan-Ransom.Win32.Blocker.jcen circulation networks.

In numerous edges of the globe, Trojan-Ransom.Win32.Blocker.jcen grows by jumps and also bounds. Nevertheless, the ransom money notes and also methods of extorting the ransom amount may differ depending on particular local (regional) setups. The ransom money notes as well as techniques of extorting the ransom money amount might differ depending on particular local (local) setups.

Ransomware injection

For example:

    Faulty informs regarding unlicensed software application.

    In particular areas, the Trojans frequently wrongfully report having spotted some unlicensed applications made it possible for on the victim’s device. The sharp after that demands the user to pay the ransom money.

    Faulty statements about illegal material.

    In nations where software piracy is much less preferred, this method is not as effective for the cyber frauds. Conversely, the Trojan-Ransom.Win32.Blocker.jcen popup alert might falsely declare to be originating from a police institution and will report having situated youngster porn or various other prohibited data on the tool.

    Trojan-Ransom.Win32.Blocker.jcen popup alert might incorrectly assert to be obtaining from a law enforcement organization as well as will report having situated kid porn or other unlawful data on the tool. The alert will similarly consist of a need for the customer to pay the ransom money.

Technical details

File Info:

crc32: 0B87BBE8
md5: 3d37eef2eb7ac13b66fa8efe56fd9f2e
name: 3D37EEF2EB7AC13B66FA8EFE56FD9F2E.mlw
sha1: 775123b0517b67ede217e2d045ddaeca69d9a1cb
sha256: b0cb7efc6ec2376689e125d41d1b8e98081ca19d61faac39ea6ba1ce262a884d
sha512: 18aa94b53e875788476e84918e5e9945fcc5e1a55e727e6a33e06badf5670e1d72fd9b9931dfafd41b65c4cbab9a0d242480905771b5e5c186e1d6e4ed560c58
ssdeep: 6144:G3ue8ySm8hQAAIfFrRXuEE+0l97mKwKzqHVRe86JQPDHDdx/Qtqa:u/zkFF+EExZmKbzuVRePJQPDHvd
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan-Ransom.Win32.Blocker.jcen also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.FxcaxMMUqhATTc.Worm
K7AntiVirus Trojan ( 003da8d71 )
Elastic malicious (high confidence)
DrWeb Trojan.Siggen.36621
Cynet Malicious (score: 100)
CAT-QuickHeal Trojan.Mauvaise.SL1
ALYac Gen:Variant.Pykspa.1
Malwarebytes Generic.Worm.Agent.DDS
Zillya Trojan.Vilsel.Win32.2602
K7GW Trojan ( 003da8d71 )
Cybereason malicious.2eb7ac
Baidu Win32.Worm.Autorun.o
Cyren W32/Risk.BZSN-6837
Symantec W32.Pykspa.D
ESET-NOD32 Win32/AutoRun.Agent.TG
Zoner Trojan.Win32.24407
APEX Malicious
Avast Win32:Renos-KY [Trj]
ClamAV Win.Worm.Pykspa-1
Kaspersky Trojan-Ransom.Win32.Blocker.jcen
BitDefender Gen:Variant.Pykspa.1
NANO-Antivirus Trojan.Win32.Agent.ctkmgw
ViRobot Trojan.Win32.Blocker.Gen.B
SUPERAntiSpyware Worm.SkypeBot
MicroWorld-eScan Gen:Variant.Pykspa.1
Tencent Worm.Win32.Pykspa.a
Ad-Aware Gen:Variant.Pykspa.1
Comodo Worm.Win32.Autorun.Agent_TG0@1isiwy
BitDefenderTheta Gen:NN.ZexaF.34690.unW@aev1Aop
VIPRE Worm.Win32.Skyper.b (v)
TrendMicro WORM_VILSEL.SMC
McAfee-GW-Edition BehavesLike.Win32.Pykse.tz
FireEye Generic.mg.3d37eef2eb7ac13b
Sophos ML/PE-A + W32/Pykse-F
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/Blocker.lhz
Webroot W32.Trojan.Gen
Avira TR/Agent.327680.A
eGambit Unsafe.AI_Score_99%
Antiy-AVL Trojan/Generic.ASMalwS.C6BB
Kingsoft Heur.SSC.2452.1216.(kcloud)
Arcabit Trojan.Pykspa.1
ZoneAlarm Trojan-Ransom.Win32.Blocker.jcen
GData Win32.Trojan.PSE.17RRBDK
TACHYON Ransom/W32.Blocker.1376256.D
AhnLab-V3 Trojan/Win32.Zepfod.R4378
Acronis suspicious
McAfee W32/Pykse.worm.gen.a
MAX malware (ai score=83)
VBA32 Trojan.ChidikSun.28205
Panda Trj/Vilsel.B
TrendMicro-HouseCall WORM_VILSEL.SMC
Rising Worm.Autorun!1.BC87 (RDMK:cmRtazoa8qt9hrhvscyQ5X/CqwSz)
Yandex Trojan.GenAsa!R41E4MI3PTc
Ikarus Trojan.Win32.AntiAV
MaxSecure Trojan.Ransom.Blocker.iprw
Fortinet W32/Agent.XEK!tr
AVG Win32:Renos-KY [Trj]

How to remove Trojan-Ransom.Win32.Blocker.jcen 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 GridinSoft2

There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft3.

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.Blocker.jcen 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.Blocker.jcen you can always ask me in the comments for getting help.

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References

  1. Microsoft Ignite: How to disable User Account Control (UAC) on Windows Server
  2. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  3. 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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