Trojan.Ramnit

What is Trojan.Ramnit infection?

In this article you will discover about the definition of Trojan.Ramnit and also its negative effect on your computer. Such ransomware are a kind of malware that is elaborated by on-line fraudulences to demand paying the ransom money by a victim.

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In the majority of the cases, Trojan.Ramnit virus will advise its targets to start funds transfer for the function of neutralizing the amendments that the Trojan infection has presented to the sufferer’s device.

Trojan.Ramnit Summary

These adjustments 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;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records found on the target’s hard disk — so the target can no longer utilize the data;
  • Preventing routine accessibility 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.

Trojan.Ramnit

One of the most normal channels where Trojan.Ramnit Trojans are infused are:

  • By ways of phishing emails;
  • As an effect of user ending up on a resource that hosts a malicious software program;

As quickly as the Trojan is effectively injected, it will either cipher the data on the sufferer’s computer or avoid the gadget from operating in a proper manner – while also placing a ransom note that discusses the need for the victims to impact the payment for the objective of decrypting the files or restoring the data system back to the preliminary problem. In most instances, the ransom note will certainly come up when the client restarts the PC after the system has actually already been damaged.

Trojan.Ramnit circulation channels.

In numerous corners of the world, Trojan.Ramnit expands by jumps and bounds. Nonetheless, the ransom notes and techniques of extorting the ransom amount might differ relying on particular neighborhood (local) setups. The ransom notes and also tricks of extorting the ransom money amount may vary depending on certain neighborhood (local) setups.

Ransomware injection

As an example:

    Faulty notifies concerning unlicensed software.

    In particular locations, the Trojans typically wrongfully report having actually detected some unlicensed applications made it possible for on the target’s device. The sharp then requires the individual to pay the ransom.

    Faulty statements concerning illegal material.

    In nations where software piracy is much less popular, this technique is not as reliable for the cyber frauds. Additionally, the Trojan.Ramnit popup alert might incorrectly declare to be originating from a law enforcement establishment and also will certainly report having situated kid pornography or other unlawful data on the tool.

    Trojan.Ramnit popup alert may incorrectly declare to be acquiring from a law enforcement establishment and also will certainly report having located youngster porn or other illegal data on the device. The alert will likewise have a requirement for the individual to pay the ransom.

Technical details

File Info:

crc32: 46D36506
md5: 28937d03af78d36b881652b21db8586e
name: 28937D03AF78D36B881652B21DB8586E.mlw
sha1: 0fdf0a7af5d16399a821f5b24ec8644dcc7fecc5
sha256: 5943564ab3d38d4a9a0df32352dd5d2b04ccb76294e68a5efcbad5745d397de3
sha512: 389a39af729c407efe2a404ba408aea4285914bac171e98e1a3fed5a559f6d101fdf765428a317b6e509c7c4f4906fb9e59cdc9f63017105543812243c60d1b2
ssdeep: 3072:L73CkTtm5bZMWp4uZ0Hi0hsmTG7Alwrs6n6bdbx1r6AQOUn4Ys/XD78FiJbLamK:LZTIHMiZ0HY7nB6bdLrtBvD7NIO
type: PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows

Version Info:

0: [No Data]

Trojan.Ramnit also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0056f0621 )
Elastic malicious (high confidence)
DrWeb Win32.HLLM.Reset.547
Cynet Malicious (score: 100)
McAfee GenericRXDK-KO!28937D03AF78
Cylance Unsafe
Zillya Trojan.Lebag.Win32.4919
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Trojan:Win32/Generic.25849c88
K7GW Trojan ( 0056f0621 )
Cybereason malicious.3af78d
Symantec W32.Ramnit!dr
ESET-NOD32 a variant of Win32/Kryptik.GABT
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Ransomware.Lebag-7003027-0
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Trojan.Ransom.BWI
NANO-Antivirus Trojan.Win32.Lebag.evrtyc
SUPERAntiSpyware Backdoor.Hostil/Variant
MicroWorld-eScan Trojan.Ransom.BWI
Tencent Malware.Win32.Gencirc.114954ba
Ad-Aware Trojan.Ransom.BWI
Sophos Mal/Generic-R + Mal/EncPk-AOP
Comodo TrojWare.Win32.Crypt.C@7vajd0
BitDefenderTheta Gen:NN.ZexaF.34628.lqW@a81AiYg
VIPRE Trojan.Win32.Generic!BT
TrendMicro TROJ_DYER.BME
McAfee-GW-Edition BehavesLike.Win32.Generic.cc
FireEye Generic.mg.28937d03af78d36b
Emsisoft Trojan.Ransom.BWI (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Lebag.lj
Webroot W32.Trojan.Gen
Avira TR/Crypt.XPACK.Gen7
eGambit Unsafe.AI_Score_93%
Microsoft TrojanDropper:Win32/Evotob.B
Arcabit Trojan.Ransom.BWI
AegisLab Trojan.Win32.Generic.4!c
GData Trojan.Ransom.BWI
TACHYON Trojan/W32.Lebag.192000.F
AhnLab-V3 Trojan/Win32.Poison.R214571
Acronis suspicious
VBA32 Trojan.FakeAV.01657
MAX malware (ai score=100)
Malwarebytes Trojan.Ramnit
Panda Trj/GdSda.A
TrendMicro-HouseCall TROJ_DYER.BME
Rising Dropper.Evotob!8.73F (C64:YzY0OoN0bane0gH9)
Yandex Trojan.GenAsa!t4F/rx27erI
Ikarus Trojan.Win32.Lebag
Fortinet W32/Kryptik.GKMB!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Generic.HxMBFfEA

How to remove Trojan.Ramnit 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.

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Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Trojan.Ramnit 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 Trojan.Ramnit 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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