Win32/Ramnit.BV

Written by Robert Bailey

What is Win32/Ramnit.BV infection?

In this post you will discover about the interpretation of Win32/Ramnit.BV and its unfavorable influence on your computer. Such ransomware are a type of malware that is clarified by on-line frauds to demand paying the ransom by a victim.

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Most of the cases, Win32/Ramnit.BV virus will instruct its targets to initiate funds move for the objective of counteracting the amendments that the Trojan infection has introduced to the victim’s device.

Win32/Ramnit.BV Summary

These alterations 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.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Attempts to stop active services;
  • 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 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.
  • Operates on local firewall’s policies and settings;
  • 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 disable Windows Defender;
  • Attempts to modify or disable Security Center warnings;
  • Ciphering the files found on the target’s hard disk — so the target can no longer utilize the information;
  • Preventing routine access 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.

Win32/Ramnit.BV

The most regular networks where Win32/Ramnit.BV Ransomware Trojans are injected are:

  • By ways of phishing e-mails;
  • As a consequence of individual ending up on a resource that holds a malicious software application;

As soon as the Trojan is successfully injected, it will either cipher the data on the victim’s computer or stop the tool from operating in a proper manner – while likewise placing a ransom money note that points out the demand for the sufferers to impact the settlement for the purpose of decrypting the files or restoring the documents system back to the first condition. In many circumstances, the ransom money note will come up when the client restarts the PC after the system has already been harmed.

Win32/Ramnit.BV circulation channels.

In numerous corners of the world, Win32/Ramnit.BV grows by jumps and bounds. Nevertheless, the ransom money notes and also tricks of obtaining the ransom amount might differ relying on certain neighborhood (regional) setups. The ransom money notes and methods of extorting the ransom money quantity may vary depending on certain regional (local) settings.

Ransomware injection

For example:

    Faulty notifies about unlicensed software.

    In particular areas, the Trojans frequently wrongfully report having actually discovered some unlicensed applications allowed on the sufferer’s gadget. The sharp then demands the individual to pay the ransom.

    Faulty statements concerning prohibited material.

    In countries where software piracy is less prominent, this approach is not as efficient for the cyber fraudulences. Conversely, the Win32/Ramnit.BV popup alert might falsely claim to be stemming from a law enforcement organization as well as will certainly report having located youngster porn or other unlawful information on the gadget.

    Win32/Ramnit.BV popup alert might falsely declare to be deriving from a legislation enforcement institution and also will report having situated kid pornography or other prohibited information on the gadget. The alert will similarly contain a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: 9279A545
md5: cf8f2896d1d937273012166808748003
name: CF8F2896D1D937273012166808748003.mlw
sha1: 1502383affe3e70d9d3ad5d97f33fb89549e15ec
sha256: 1e23ff8aab196fdbd71bc66bd3bde85c23a21aeb3d388d23b5975ba7027223a8
sha512: 85b0f8b569eb3a1692e4c36efade67251d8d04c0479c7a57bc601ca2faebe2ddb9bfdcf401b3f8b828189188920986d06a354398237b60608d378485fb98bc2c
ssdeep: 6144:xIGjIi87jSr1smuhvoKqLllejZ0SVemP9qYW:KGki87Or1FuJoKCexVemFqYW
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: ExxonMobil 2006-2014 (c)
InternalName: Describe
FileVersion: 8.3.6.7
CompanyName: ExxonMobil
FileDescription: Stty Iis_iusrs Bugeja Currentcon Discrepancies
LegalTrademarks: ExxonMobil 2006-2014 (c)
Comments: Stty Iis_iusrs Bugeja Currentcon Discrepancies
ProductName: Describe
Languages: English
ProductVersion: 8.3.6.7
PrivateBuild: 8.3.6.7
OriginalFilename: Describe.exe
Translation: 0x0409 0x04b0

Win32/Ramnit.BV also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
DrWeb Win32.HLLM.Reset.481
MicroWorld-eScan Trojan.Generic.22665524
FireEye Generic.mg.cf8f2896d1d93727
ALYac Trojan.Generic.22665524
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
K7AntiVirus Adware ( 00539ed31 )
Alibaba Ransom:Win32/Foreign.10d25222
K7GW Adware ( 00539ed31 )
Cybereason malicious.6d1d93
BitDefenderTheta Gen:NN.ZexaF.34590.tq0@aieXLGei
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/Ramnit.BV
APEX Malicious
Avast FileRepMalware
Kaspersky Trojan-Ransom.Win32.Foreign.npyb
BitDefender Trojan.Generic.22665524
NANO-Antivirus Trojan.Win32.Reset.evbdes
Paloalto generic.ml
AegisLab Trojan.Win32.Foreign.j!c
Tencent Win32.Trojan.Inject.Auto
Ad-Aware Trojan.Generic.22665524
Emsisoft Trojan.Generic.22665524 (B)
Comodo Malware@#3lwk6ek787vdp
F-Secure Heuristic.HEUR/AGEN.1128645
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Generic.fc
Sophos Mal/Generic-S
SentinelOne Static AI – Suspicious PE
GData Trojan.Generic.22665524
Jiangmin Trojan.Foreign.dgv
eGambit Unsafe.AI_Score_99%
Avira HEUR/AGEN.1128645
Arcabit Trojan.Generic.D159D934
ZoneAlarm Trojan-Ransom.Win32.Foreign.npyb
Microsoft Trojan:Win32/Ramnit
Cynet Malicious (score: 100)
AhnLab-V3 Win-Trojan/Sagecrypt.Gen
Acronis suspicious
McAfee Artemis!CF8F2896D1D9
Malwarebytes MachineLearning/Anomalous.100%
Rising Virus.Ramnit!8.4 (CLOUD)
Ikarus Virus.Win32.Ramnit
AVG FileRepMalware
Panda Trj/CI.A
CrowdStrike win/malicious_confidence_100% (D)
Qihoo-360 Win32/Trojan.Foreign.HgIASOgA

How to remove Win32/Ramnit.BV 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 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 Win32/Ramnit.BV 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/Ramnit.BV 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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