Backdoor:Win32/Votwup.B

What is Backdoor:Win32/Votwup.B infection?

In this short article you will discover regarding the meaning of Backdoor:Win32/Votwup.B and its unfavorable impact on your computer. Such ransomware are a type of malware that is clarified by on the internet scams to require paying the ransom money by a target.

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Most of the cases, Backdoor:Win32/Votwup.B infection will certainly advise its targets to launch funds move for the function of neutralizing the modifications that the Trojan infection has presented to the sufferer’s device.

Backdoor:Win32/Votwup.B Summary

These adjustments can be as adheres to:

  • 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.
  • Possible date expiration check, exits too soon after checking local time;
  • 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.
  • Unconventionial language used in binary resources: Russian;
  • 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
  • Operates on local firewall’s policies and settings;
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files located on the sufferer’s hard disk — so the target can no longer use the data;
  • Preventing normal access 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.

Backdoor:Win32/Votwup.B

One of the most typical channels whereby Backdoor:Win32/Votwup.B Trojans are injected are:

  • By ways of phishing e-mails;
  • As an effect of user winding up on a source that holds a malicious software application;

As soon as the Trojan is effectively injected, it will certainly either cipher the data on the target’s PC or stop the device from functioning in an appropriate manner – while likewise placing a ransom money note that points out the demand for the sufferers to impact the payment for the function of decrypting the files or bring back the documents system back to the initial condition. In a lot of circumstances, the ransom note will certainly show up when the customer restarts the PC after the system has actually already been damaged.

Backdoor:Win32/Votwup.B circulation channels.

In different corners of the world, Backdoor:Win32/Votwup.B expands by leaps as well as bounds. Nonetheless, the ransom money notes as well as methods of extorting the ransom amount might differ relying on specific local (local) settings. The ransom notes and also methods of extorting the ransom money amount may differ depending on certain neighborhood (local) setups.

Ransomware injection

As an example:

    Faulty signals concerning unlicensed software.

    In specific areas, the Trojans commonly wrongfully report having spotted some unlicensed applications enabled on the target’s device. The alert then requires the user to pay the ransom money.

    Faulty declarations about unlawful content.

    In nations where software piracy is less preferred, this method is not as efficient for the cyber frauds. Alternatively, the Backdoor:Win32/Votwup.B popup alert might incorrectly declare to be deriving from a law enforcement organization as well as will report having located youngster pornography or other illegal data on the tool.

    Backdoor:Win32/Votwup.B popup alert might wrongly declare to be obtaining from a legislation enforcement establishment as well as will certainly report having located kid pornography or various other unlawful data on the gadget. The alert will in a similar way include a demand for the customer to pay the ransom.

Technical details

File Info:

crc32: 1D3E1322
md5: 2eb511f3fc9d1f83dcd9d0f500334562
name: 2EB511F3FC9D1F83DCD9D0F500334562.mlw
sha1: ce046b1d8d1129820d32592b93c87715e36331fa
sha256: 0d8457628b3c81f744ad2fadef50f1430b142b27fd33d4ed8a13d8ca80eb87d5
sha512: 6780d2d0b3be4cef77128a158cff4a3290da2a1e6aa3763f303709bf301bdab77c271c1d540832dfc04ecd53d0456057f0d0bbcb46dc27a104b2f755a893a2f8
ssdeep: 3072:kWXE1ObNx0QBCEWCK1Mpp6aIIIih49hoCddbt4on227ZbpV8PbLcY:NfUcCEU6qD9hbdp4H27RpV4
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Backdoor:Win32/Votwup.B also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 001f820c1 )
Elastic malicious (high confidence)
DrWeb VBS.Rmnet.5
Cynet Malicious (score: 100)
ALYac Trojan.HTML.Ramnit.A
Cylance Unsafe
Zillya Trojan.Gimemo.Win32.6810
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Ransom:Win32/Votwup.35c84f08
K7GW Trojan ( 001f820c1 )
Cybereason malicious.3fc9d1
Symantec W32.Ramnit!html
ESET-NOD32 Win32/Votwup.R
APEX Malicious
Avast Win32:Dropper-OGZ [Drp]
ClamAV Win.Dropper.Ramnit-9821749-0
Kaspersky Trojan-Ransom.Win32.Gimemo.cpl
BitDefender Trojan.HTML.Ramnit.A
NANO-Antivirus Trojan.Win32.PornoBlocker.iesqy
ViRobot Trojan.Win32.A.Gimemo.100000
MicroWorld-eScan Trojan.HTML.Ramnit.A
Tencent Malware.Win32.Gencirc.10c042a8
Ad-Aware Trojan.HTML.Ramnit.A
Sophos Mal/FakeAV-BW
Comodo Malware@#3e869emqmaxm9
BitDefenderTheta AI:Packer.515BF1591F
VIPRE Worm.Win32.Koobface.as (v)
TrendMicro TROJ_SPYEYE.SMEP
McAfee-GW-Edition BehavesLike.Win32.Generic.dm
FireEye Generic.mg.2eb511f3fc9d1f83
Emsisoft Trojan.HTML.Ramnit.A (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/PornoBlocker.amt
Avira VBS/Ramnit.abcd
eGambit Generic.Malware
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Backdoor:Win32/Votwup.B
AegisLab Trojan.Win32.Gimemo.j!c
GData Trojan.HTML.Ramnit.A
TACHYON Ransom/W32.Gimemo.272332
Acronis suspicious
McAfee PWS-Zbot.gen.do
MAX malware (ai score=100)
VBA32 Trojan.SB.01742
Malwarebytes Malware.Heuristic.1006
Panda Generic Malware
TrendMicro-HouseCall TROJ_SPYEYE.SMEP
Rising Virus.Ramnit!8.4 (CLOUD)
Ikarus Trojan-Downloader.Win32.Bubnix
Fortinet W32/Bamital.FA!tr
AVG Win32:Dropper-OGZ [Drp]
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Gimemo.HgIASPkA

How to remove Backdoor:Win32/Votwup.B 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 Backdoor:Win32/Votwup.B 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 Backdoor:Win32/Votwup.B 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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