Worm:VBS/Jenxcus

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

What is Worm:VBS/Jenxcus infection?

In this short article you will locate concerning the definition of Worm:VBS/Jenxcus and its adverse impact on your computer system. Such ransomware are a kind of malware that is specified by on-line scams to require paying the ransom money by a sufferer.

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In the majority of the instances, Worm:VBS/Jenxcus ransomware will advise its victims to initiate funds transfer for the objective of neutralizing the changes that the Trojan infection has actually presented to the sufferer’s tool.

Worm:VBS/Jenxcus Summary

These alterations can be as complies with:

  • 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.
  • Detected script timer window indicative of sleep style evasion;
  • A process attempted to delay the analysis task.;
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • A process created a hidden window;
  • 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;
  • Unconventionial language used in binary resources: Russian;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • A scripting utility was executed;
  • Uses Windows utilities for basic functionality;
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • 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
  • Stores JavaScript or a script command in the registry, likely for persistence or configuration;
  • A wscript.exe process commonly used in script or document file downloaders initiated network activity;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers situated on the target’s hard disk drive — so the sufferer can no longer utilize the information;
  • Preventing routine accessibility to the target’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 TrojanRansom.Blocker
a.tomx.xyz TrojanRansom.Blocker
installer.jdownloader.org TrojanRansom.Blocker

Worm:VBS/Jenxcus

The most regular channels where Worm:VBS/Jenxcus Ransomware are infused are:

  • By ways of phishing emails;
  • As a repercussion of individual ending up on a source that organizes a harmful software;

As soon as the Trojan is successfully infused, it will either cipher the data on the victim’s computer or stop the gadget from functioning in an appropriate fashion – while likewise positioning a ransom money note that mentions the need for the sufferers to impact the repayment for the objective of decrypting the files or bring back the documents system back to the first condition. In a lot of instances, the ransom note will certainly turn up when the customer reboots the PC after the system has currently been harmed.

Worm:VBS/Jenxcus circulation channels.

In different corners of the globe, Worm:VBS/Jenxcus grows by jumps and bounds. However, the ransom money notes and techniques of extorting the ransom amount might differ depending upon specific neighborhood (regional) setups. The ransom money notes and tricks of obtaining the ransom money amount might differ depending on particular regional (local) settings.

Ransomware injection

For example:

    Faulty notifies about unlicensed software application.

    In certain locations, the Trojans usually wrongfully report having found some unlicensed applications enabled on the victim’s device. The sharp after that demands the customer to pay the ransom money.

    Faulty statements regarding prohibited web content.

    In countries where software application piracy is much less popular, this technique is not as effective for the cyber scams. Alternatively, the Worm:VBS/Jenxcus popup alert may incorrectly claim to be stemming from a law enforcement institution and also will report having located youngster porn or other unlawful information on the gadget.

    Worm:VBS/Jenxcus popup alert may falsely claim to be acquiring from a legislation enforcement organization as well as will report having situated child porn or other illegal data on the gadget. The alert will similarly have a need for the customer to pay the ransom.

Technical details

File Info:

crc32: CE58034C
md5: 7953277b75d63c0a1eb9c6da79dc2abe
name: 7953277B75D63C0A1EB9C6DA79DC2ABE.mlw
sha1: ca879f54e9e9f5efc3a57400d56b3998446d4307
sha256: 158408ff6a81995ec6ca05776aa1c89fd7af970fbdcd784c6191de706238a16a
sha512: dfea41fd257594ceb0ce0094be13010a70a058607c7b943d23b00d0578aacff7ef4d28b8656ca54f7133d37a05eb9c9af494ba32181aa712d4ce188fa2f3a674
ssdeep: 12288:CANwRo+mv8QD4+0V16j3sdWVSm1jy//lqjS0Wpnd/9DErsLvc:CAT8QE+kqsdWo+y//0S0ekrsw
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: ConsPiracY
FileDescription: Jdownloader 2 Espaxf1ol 2.0.0.1
FileVersion: 2.0.0.1
Comments:
CompanyName: ConsPiracY
Translation: 0x0409 0x04e4

Worm:VBS/Jenxcus also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
MicroWorld-eScan Gen:Heur.SMHeist.3
FireEye Gen:Heur.SMHeist.3
CAT-QuickHeal TrojanRansom.Blocker
McAfee Artemis!7953277B75D6
Cylance Unsafe
AegisLab Trojan.Win32.Blocker.j!c
Sangfor Trojan.Win32.Agent.C
BitDefender Gen:Heur.SMHeist.3
K7GW Trojan ( 005103ce1 )
K7AntiVirus Trojan ( 005103ce1 )
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Generik.DUDHFII
APEX Malicious
Avast Other:Malware-gen [Trj]
Kaspersky Trojan-Ransom.Win32.Blocker.khcm
Alibaba Ransom:Win32/Blocker.585ec00a
NANO-Antivirus Riskware.Nsis.Agent.eocvgy
Tencent Win32.Trojan.Blocker.Ahyh
Ad-Aware Gen:Heur.SMHeist.3
Emsisoft Gen:Heur.SMHeist.3 (B)
F-Secure Adware.ADWARE/Agent.sphdy
DrWeb Trojan.MulDrop11.19126
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_Blocker.R002C0GB121
McAfee-GW-Edition BehavesLike.Win32.Dropper.jc
Sophos Mal/Generic-S
Ikarus Trojan.SuspectCRC
Jiangmin AdWare.Generic.ggsn
Webroot W32.Gen.BT
Avira ADWARE/Agent.sphdy
Kingsoft Win32.Troj.Generic_a.a.(kcloud)
Microsoft Worm:VBS/Jenxcus
Arcabit Trojan.SMHeist.3
AhnLab-V3 PUP/Win32.Helper.C2689020
ZoneAlarm Trojan-Ransom.Win32.Blocker.khcm
GData Gen:Heur.SMHeist.3
Cynet Malicious (score: 85)
VBA32 Adware.Creprote
MAX malware (ai score=86)
Malwarebytes Generic.Malware/Suspicious
Panda Trj/CI.A
TrendMicro-HouseCall Ransom_Blocker.R002C0GB121
Yandex PUA.Agent!gd/CuVbj+3Q
MaxSecure Trojan-Ransom.Win32.Crypmod.zfq
Fortinet Adware/Generic
AVG Other:Malware-gen [Trj]
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Blocker.HwUBIZ8A

How to remove Worm:VBS/Jenxcus 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

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 Worm:VBS/Jenxcus 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:

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If the guide doesn’t help you to remove Worm:VBS/Jenxcus 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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