Win32/VB.SJW

Written by Robert Bailey

What is Win32/VB.SJW infection?

In this post you will certainly discover concerning the interpretation of Win32/VB.SJW and its negative effect on your computer system. Such ransomware are a type of malware that is elaborated by online frauds to demand paying the ransom by a target.

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In the majority of the situations, Win32/VB.SJW infection will certainly instruct its sufferers to initiate funds move for the function of reducing the effects of the modifications that the Trojan infection has actually introduced to the target’s gadget.

Win32/VB.SJW 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.
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • 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.
  • A process attempted to delay the analysis task.;
  • 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.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • 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 repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
  • 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 copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the papers located on the target’s hard disk drive — so the sufferer 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.

Win32/VB.SJW

One of the most normal networks whereby Win32/VB.SJW are infused are:

  • By means of phishing e-mails;
  • As an effect of customer winding up on a resource that organizes a malicious software program;

As quickly as the Trojan is successfully infused, it will either cipher the data on the target’s PC or avoid the gadget from functioning in a proper fashion – while additionally placing a ransom money note that points out the demand for the victims to impact the payment for the objective of decrypting the records or recovering the documents system back to the first problem. In a lot of circumstances, the ransom money note will certainly turn up when the client reboots the PC after the system has currently been damaged.

Win32/VB.SJW circulation channels.

In numerous corners of the world, Win32/VB.SJW grows by jumps as well as bounds. Nonetheless, the ransom notes and also tricks of extorting the ransom money amount might differ depending upon specific local (local) settings. The ransom money notes as well as techniques of obtaining the ransom quantity may vary depending on particular local (regional) setups.

Ransomware injection

For instance:

    Faulty signals about unlicensed software application.

    In particular areas, the Trojans commonly wrongfully report having actually identified some unlicensed applications enabled on the sufferer’s tool. The sharp after that demands the customer to pay the ransom.

    Faulty statements about prohibited content.

    In countries where software application piracy is much less prominent, this approach is not as effective for the cyber scams. Conversely, the Win32/VB.SJW popup alert may incorrectly claim to be originating from a law enforcement organization and also will report having located child porn or other illegal data on the device.

    Win32/VB.SJW popup alert might incorrectly declare to be acquiring from a law enforcement institution and will report having situated child porn or other prohibited data on the tool. The alert will likewise contain a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: 83BD3D06
md5: 4337074f0af6298dcc8622562ddcad4a
name: 4337074F0AF6298DCC8622562DDCAD4A.mlw
sha1: b29987d8c5b508aaf7a9f42ea456262fb51d776b
sha256: 44d073d1b8ab5f8f334d251b8d5566d9a1a2c25ebc36e6a805636ce9e3fa0617
sha512: 1e80fa88c376cc1b32b2725f4f1f8d9d463b19d99a6ac34f0501bb341dc6a7dabab67a2ac6ce55268c31b47d4b960ec7f4fb8380fd95d2c89e19e27ab38da57c
ssdeep: 12288:jvGfkF+vN7wCzn0RcXB2bgq3HgYrKhPHLi1+Wvgr5sqBHRO5+/oaV0a2CR0dUxE:7Gk+17wK0EGAO2fLybkI+/oVmRxxlR4
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/VB.SJW also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
DrWeb Trojan.DownLoad3.46410
ALYac Trojan.BRMon.Gen.1
Cylance Unsafe
Zillya Backdoor.Androm.Win32.46425
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Trojan:Win32/GandCrab.8ce2ca18
K7GW Adware ( 00539ed31 )
K7AntiVirus Adware ( 00539ed31 )
Cyren W32/S-23b82f3a!Eldorado
Symantec Packed.Generic.525
ESET-NOD32 Win32/VB.SJW
APEX Malicious
Avast FileRepMalware
Cynet Malicious (score: 100)
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Trojan.BRMon.Gen.1
NANO-Antivirus Trojan.Win32.Androm.etkbiy
MicroWorld-eScan Trojan.BRMon.Gen.1
Tencent Win32.Backdoor.Androm.Pabv
Ad-Aware Trojan.BRMon.Gen.1
Sophos Mal/Generic-R + Mal/Emotet-E
Comodo TrojWare.Win32.Ransom.GandCrypt.B@7ikv0k
BitDefenderTheta Gen:NN.ZexaF.34678.4yW@ai3Mhrni
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_HPGANDCRAB.SMONT
McAfee-GW-Edition BehavesLike.Win32.Trojan.dc
FireEye Generic.mg.4337074f0af6298d
Emsisoft Trojan.BRMon.Gen.1 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Backdoor.Androm.tay
Avira HEUR/AGEN.1103318
Kingsoft Win32.Troj.Generic_a.a.(kcloud)
Microsoft Trojan:Win32/Tnega!ml
AegisLab Trojan.Win32.Generic.4!c
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Trojan.BRMon.Gen.1
AhnLab-V3 Win-Trojan/MalPe34.Suspicious.X2029
Acronis suspicious
McAfee GenericRXCX-QO!4337074F0AF6
MAX malware (ai score=99)
VBA32 Backdoor.Androm
Malwarebytes Trojan.Agent
Panda Trj/CI.A
TrendMicro-HouseCall Ransom_HPGANDCRAB.SMONT
Rising Ransom.Crusis!8.5724 (CLOUD)
Yandex Trojan.GenAsa!ywDVWBSxaUg
Ikarus Trojan.Win32.VB
Fortinet W32/Kryptik.FWZD!tr
AVG FileRepMalware
Paloalto generic.ml
Qihoo-360 Win32/Trojan.Generic.HgIASOMA

How to remove Win32/VB.SJW 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 Win32/VB.SJW 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 Win32/VB.SJW 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/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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