VirTool:Win32/Obfuscator.JO

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

What is VirTool:Win32/Obfuscator.JO infection?

In this post you will discover about the definition of VirTool:Win32/Obfuscator.JO as well as its negative effect on your computer system. Such ransomware are a type of malware that is clarified by online frauds to demand paying the ransom by a victim.

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In the majority of the instances, VirTool:Win32/Obfuscator.JO infection will certainly advise its targets to launch funds move for the function of counteracting the modifications that the Trojan infection has actually presented to the victim’s tool.

VirTool:Win32/Obfuscator.JO Summary

These modifications 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.
  • 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.
  • Unconventionial language used in binary resources: Russian;
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Ciphering the documents situated on the victim’s hard drive — so the victim can no longer use 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.

VirTool:Win32/Obfuscator.JO

One of the most typical channels through which VirTool:Win32/Obfuscator.JO Ransomware Trojans are infused are:

  • By ways of phishing e-mails;
  • As an effect of user ending up on a source that organizes a malicious software program;

As soon as the Trojan is successfully injected, it will certainly either cipher the information on the sufferer’s computer or protect against the gadget from working in an appropriate fashion – while likewise putting a ransom money note that points out the need for the targets to impact the settlement for the objective of decrypting the records or recovering the documents system back to the preliminary condition. In the majority of circumstances, the ransom note will show up when the customer reboots the PC after the system has currently been harmed.

VirTool:Win32/Obfuscator.JO distribution networks.

In various edges of the globe, VirTool:Win32/Obfuscator.JO expands by jumps and bounds. Nonetheless, the ransom notes and also methods of extorting the ransom money amount may vary depending upon particular regional (regional) settings. The ransom notes and techniques of obtaining the ransom money quantity may vary depending on certain local (local) settings.

Ransomware injection

For instance:

    Faulty alerts concerning unlicensed software application.

    In specific areas, the Trojans usually wrongfully report having spotted some unlicensed applications allowed on the victim’s device. The sharp then requires the individual to pay the ransom.

    Faulty statements concerning prohibited material.

    In countries where software program piracy is less prominent, this approach is not as reliable for the cyber frauds. Alternatively, the VirTool:Win32/Obfuscator.JO popup alert might falsely assert to be originating from a law enforcement organization and will report having located kid porn or other prohibited data on the gadget.

    VirTool:Win32/Obfuscator.JO popup alert might wrongly declare to be acquiring from a law enforcement institution as well as will certainly report having located youngster pornography or various other unlawful information on the gadget. The alert will likewise consist of a requirement for the user to pay the ransom.

Technical details

File Info:

crc32: F5AB0D89
md5: 11b4c9c8776a3729e62483d27f613e46
name: 11B4C9C8776A3729E62483D27F613E46.mlw
sha1: a556ee7d4ca455d8ba72724478679c4c6bca66d8
sha256: 5d65a40d297a79ff44fea2dbe6b97a385abf8c7b504fa68130d2cc257821208c
sha512: 12e350e129e648857d13dea38e49966d41b5db5899e11663c69bf4afa928cdf07c208deb22a02fc4878c42a1b1eae8fe513c74ddce9dba9edc085a182837c528
ssdeep: 1536:kBd4N3sO+e0x20EwAHF8zoOHOoGzO/J7B6bkrhGIAAN/UBA3kScDi5Oi3nB:qY8/QwAH+RfGzO/J7Bq5A0ScDvi3nB
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: KYlAgR
FileVersion: 6.0
CompanyName: HjE
ProductName: jdrDrpe
ProductVersion: 6.0
FileDescription: nMbTXia
OriginalFilename: iKi.exe
Translation: 0x0409 0x0000

VirTool:Win32/Obfuscator.JO also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
MicroWorld-eScanTrojan.Ransom.Cerber.1
FireEyeGeneric.mg.11b4c9c8776a3729
ALYacTrojan.Ransom.Cerber.1
CylanceUnsafe
VIPRETrojan.Win32.Generic!BT
SangforTrojan.Win32.Save.a
K7AntiVirusTrojan ( 0050b7db1 )
BitDefenderTrojan.Ransom.Cerber.1
K7GWTrojan ( 0050b7db1 )
Cybereasonmalicious.8776a3
ArcabitTrojan.Ransom.Cerber.1
SymantecML.Attribute.HighConfidence
APEXMalicious
ClamAVWin.Trojan.Agent-966694
KasperskyHEUR:Trojan.Win32.Generic
NANO-AntivirusTrojan.Win32.Crypted.ubmkc
RisingTrojan.Win32.Generic.12DFB8E7 (C64:YzY0OpT7QHJ8gwcv)
Ad-AwareTrojan.Ransom.Cerber.1
EmsisoftTrojan.Ransom.Cerber.1 (B)
ComodoMalware@#1b0ouziq0qt8x
F-SecureTrojan.TR/Crypt.XPACK.Gen
DrWebBackDoor.Dego.2
ZillyaTrojan.FakeAV.Win32.45200
McAfee-GW-EditionBehavesLike.Win32.Dropper.mh
SophosML/PE-A + Mal/FakeAV-BW
IkarusVirus.Win32.Heri
JiangminTrojan.Generic.llko
Webrootnone
AviraTR/Crypt.XPACK.Gen
MAXmalware (ai score=80)
Antiy-AVLTrojan/Win32.AGeneric
MicrosoftVirTool:Win32/Obfuscator.JO
ZoneAlarmHEUR:Trojan.Win32.Generic
GDataTrojan.Ransom.Cerber.1
CynetMalicious (score: 100)
AhnLab-V3Trojan/Win32.Generic.C1913709
McAfeeGenericR-FSR!11B4C9C8776A
PandaTrj/CI.A
ESET-NOD32Win32/Agent.RMA
TencentWin32.Trojan.Bublik.gsi
YandexTrojan.Agent!uSjALLbARoQ
SentinelOneStatic AI – Malicious PE
FortinetW32/Agent.BW
BitDefenderThetaAI:Packer.246F9F731F
Paloaltogeneric.ml
CrowdStrikewin/malicious_confidence_100% (D)
Qihoo-360Generic/HEUR/Malware.QVM20.Gen

How to remove VirTool:Win32/Obfuscator.JO virus?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
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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 VirTool:Win32/Obfuscator.JO 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 VirTool:Win32/Obfuscator.JO 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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