Win32/Ramnit.A

Written by Robert Bailey

What is Win32/Ramnit.A infection?

In this post you will find concerning the interpretation of Win32/Ramnit.A and its negative influence on your computer. Such ransomware are a kind of malware that is specified by on the internet scams to require paying the ransom money by a victim.

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Most of the instances, Win32/Ramnit.A infection will certainly instruct its victims to initiate funds transfer for the objective of neutralizing the changes that the Trojan infection has presented to the target’s device.

Win32/Ramnit.A Summary

These modifications 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.
  • 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 located on the sufferer’s hard disk drive — so the sufferer can no longer use the data;
  • 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.

Win32/Ramnit.A

The most typical networks whereby Win32/Ramnit.A Ransomware Trojans are infused are:

  • By methods of phishing emails;
  • As a consequence of customer winding up on a source that hosts a harmful software;

As soon as the Trojan is efficiently infused, it will certainly either cipher the information on the victim’s PC or protect against the gadget from operating in a proper manner – while also putting a ransom money note that states the requirement for the sufferers to impact the settlement for the function of decrypting the files or recovering the documents system back to the preliminary condition. In the majority of instances, the ransom money note will show up when the customer reboots the COMPUTER after the system has actually already been harmed.

Win32/Ramnit.A distribution networks.

In different corners of the world, Win32/Ramnit.A expands by leaps as well as bounds. Nonetheless, the ransom notes and methods of extorting the ransom money quantity might differ depending upon particular local (local) settings. The ransom money notes and also techniques of obtaining the ransom amount may differ depending on particular regional (regional) setups.

Ransomware injection

For example:

    Faulty informs regarding unlicensed software.

    In specific areas, the Trojans often wrongfully report having actually spotted some unlicensed applications made it possible for on the target’s device. The alert then requires the customer to pay the ransom money.

    Faulty declarations about unlawful web content.

    In nations where software application piracy is less prominent, this technique is not as reliable for the cyber frauds. Alternatively, the Win32/Ramnit.A popup alert might wrongly claim to be originating from a law enforcement organization as well as will report having situated kid pornography or other unlawful information on the gadget.

    Win32/Ramnit.A popup alert may wrongly declare to be obtaining from a law enforcement establishment as well as will report having located kid porn or other unlawful data on the gadget. The alert will similarly consist of a requirement for the customer to pay the ransom.

Technical details

File Info:

crc32: C12B40E4
md5: d7cfe00dae12c7fdd7c63875a906badc
name: D7CFE00DAE12C7FDD7C63875A906BADC.mlw
sha1: c3a6184e8f9dcb46686f327d7516d355e5931c57
sha256: 8ecbac587f15413edcba59d5130cae1d6b561d64074472d15987483511942a0f
sha512: fdeeb205da93d920ab91068be8ba1ba173bcc4a5342d05e19061199d135b7fc071664e55bcadf3184d3bc2863e60240e0c973e464c9d7e09e42bf6eca6dc735a
ssdeep: 3072:rnH1W9aCaoUd0qgkGh6pRZ0QT7zBNihoNDo9QFO0yN+SlP+L5aaBuu9HYUq3q03y:s9Jqgjh6pRaE9CotNFO0w7aFtKJAEg
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Google Inc. Copyright xa9 2013. All rights reserved.
InternalName: Endings Dunno
FileVersion: 2.7.6.8
CompanyName: Google Inc.
PrivateBuild: 2.7.6.8
LegalTrademarks: Google Inc. Copyright xa9 2013. All rights reserved.
Comments: Menus Becopme Quantizatin Embraced Consortium Appsed
ProductName: Endings Dunno
Languages: English
ProductVersion: 2.7.6.8
FileDescription: Menus Becopme Quantizatin Embraced Consortium Appsed
OriginalFilename: Endings Dunno
Translation: 0x0409 0x04b0

Win32/Ramnit.A also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Adware ( 00539ed31 )
Elastic malicious (high confidence)
DrWeb Win32.HLLM.Reset.493
Cynet Malicious (score: 100)
ALYac Trojan.SerKD.12579859
Cylance Unsafe
Zillya Trojan.SerKD.Win32.3
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Ransom:Win32/Foreign.0da4d19a
K7GW Trojan ( 0056e9401 )
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/Ramnit.A
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan-Ransom.Win32.Foreign.npxb
BitDefender Trojan.SerKD.12579859
NANO-Antivirus Trojan.Win32.Ramnit.evaaqx
MicroWorld-eScan Trojan.SerKD.12579859
Tencent Win32.Trojan.Inject.Auto
Ad-Aware Trojan.SerKD.12579859
Sophos ML/PE-A
Comodo Malware@#1r59186p8gbs6
BitDefenderTheta Gen:NN.ZexaF.34678.qq0@aeZffUbi
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Generic.dc
FireEye Generic.mg.d7cfe00dae12c7fd
Emsisoft Trojan.SerKD.12579859 (B)
SentinelOne Static AI – Malicious PE
Webroot W32.Trojan.Gen
Avira HEUR/AGEN.1129222
Microsoft Trojan:Win32/Ramnit
AegisLab Trojan.Win32.Foreign.4!c
GData Trojan.SerKD.12579859
AhnLab-V3 Win-Trojan/Sagecrypt.Gen
Acronis suspicious
McAfee Artemis!D7CFE00DAE12
MAX malware (ai score=100)
VBA32 BScope.Trojan.Yakes
Malwarebytes MachineLearning/Anomalous.100%
Panda Trj/CI.A
Rising Virus.Ramnit!8.4 (CLOUD)
Ikarus Virus.Win32.Ramnit
Fortinet W32/Foreign.NPXB!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Trojan.Foreign.HgIASOcA

How to remove Win32/Ramnit.A 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.A 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.A 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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