Trojan:Win32/Ranumbot.RWA!MTB

Written by Robert Bailey

What is Trojan:Win32/Ranumbot.RWA!MTB infection?

In this article you will certainly discover regarding the interpretation of Trojan:Win32/Ranumbot.RWA!MTB and also its adverse influence on your computer. Such ransomware are a type of malware that is elaborated by online frauds to require paying the ransom by a sufferer.

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In the majority of the situations, Trojan:Win32/Ranumbot.RWA!MTB ransomware will certainly advise its victims to launch funds transfer for the objective of neutralizing the modifications that the Trojan infection has actually introduced to the sufferer’s tool.

Trojan:Win32/Ranumbot.RWA!MTB Summary

These adjustments can be as follows:

  • 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);
  • Compression (or decompression);
  • Injection with CreateRemoteThread in a remote process;
  • 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.
  • Detected script timer window indicative of sleep style evasion;
  • At least one IP Address, Domain, or File Name was found in a crypto call;
  • Expresses interest in specific running processes;
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • 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.
  • Unconventionial language used in binary resources: Russian;
  • A scripting utility was executed;
  • Uses Windows utilities for basic functionality;
  • Forces a created process to be the child of an unrelated process;
  • Executed a process and injected code into it, probably while unpacking;
  • Queries information on disks, possibly for anti-virtualization. Since VMs share the same disk space so it is expected that they won’t be getting as much space as an application running on
    native hardware will have access to.
  • A process attempted to delay the analysis task by a long amount of time.;
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • Steals private information from local Internet browsers;
  • Network activity contains more than one unique useragent.;
  • 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.
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Attempts to create or modify system certificates;
  • The sample wrote data to the system hosts file.;
  • Collects information to fingerprint the system. There are behavioral human characteristics that can be used to digitally identify a person to grant access to systems, devices, or data. Unlike passwords and verification codes, fingerprints are fundamental parts of user’s identities. Among the threats blocked on biometric data processing and storage systems is spyware, the malware used in phishing attacks (mostly spyware downloaders and droppers), ransomware, and Banking Trojans as posing the greatest danger.
  • 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 documents found on the target’s disk drive — so the sufferer can no more make use of the data;
  • Preventing normal 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.

Trojan:Win32/Ranumbot.RWA!MTB

One of the most normal networks through which Trojan:Win32/Ranumbot.RWA!MTB Ransomware are injected are:

  • By ways of phishing e-mails;
  • As a repercussion of user winding up on a source that organizes a destructive software application;

As soon as the Trojan is efficiently infused, it will either cipher the data on the sufferer’s computer or avoid the gadget from working in a correct way – while additionally placing a ransom money note that discusses the need for the victims to effect the repayment for the objective of decrypting the documents or restoring the data system back to the initial problem. In a lot of circumstances, the ransom note will certainly turn up when the customer restarts the COMPUTER after the system has currently been damaged.

Trojan:Win32/Ranumbot.RWA!MTB distribution channels.

In numerous edges of the globe, Trojan:Win32/Ranumbot.RWA!MTB grows by jumps as well as bounds. Nevertheless, the ransom notes as well as techniques of extorting the ransom money quantity may differ depending upon particular local (local) setups. The ransom money notes and methods of obtaining the ransom amount may differ depending on particular regional (local) settings.

Ransomware injection

As an example:

    Faulty signals about unlicensed software.

    In particular areas, the Trojans often wrongfully report having actually identified some unlicensed applications enabled on the victim’s gadget. The alert after that requires the individual to pay the ransom.

    Faulty statements concerning prohibited material.

    In nations where software piracy is much less preferred, this technique is not as reliable for the cyber frauds. Conversely, the Trojan:Win32/Ranumbot.RWA!MTB popup alert might wrongly declare to be deriving from a police establishment as well as will certainly report having located kid porn or other prohibited data on the device.

    Trojan:Win32/Ranumbot.RWA!MTB popup alert may incorrectly declare to be deriving from a law enforcement institution as well as will report having situated kid pornography or other illegal information on the gadget. The alert will in a similar way contain a need for the individual to pay the ransom.

Technical details

File Info:

crc32: 9340C0D6
md5: 2271a245c560920e18f0bd4d17c8b531
name: 2271A245C560920E18F0BD4D17C8B531.mlw
sha1: 4e671a49e9bff253135414e78b0af1ec8deab01f
sha256: fab31b9c336ced2fe83d81198d3ccfa325ca4d4cab2464b72dcda37f34e2dd68
sha512: 16728e019c115cd3d043a04eafde685076a5e45abc04200bf6318d1c2fb5684a7b4f0f1281a2f7b35380f2f0a5016129d8c69f370bae17f23f1015354d012b34
ssdeep: 196608:itddT4YXjbzV9rzRoITKkV7bYZe/8YN7opjPy:cRzbxJ31tbOeUyoFPy
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: 94c45254-6d52-40cc-93fb-b69707383880
FileDescription: Versium Research 8.4 Installation
FileVersion: 8.4
Comments:
CompanyName: 94c45254-6d52-40cc-93fb-b69707383880
Translation: 0x0409 0x04e4

Trojan:Win32/Ranumbot.RWA!MTB also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 005723511 )
DrWeb Trojan.DownLoader38.27680
Cynet Malicious (score: 100)
CAT-QuickHeal Trojandropper.Scrop
ALYac Gen:Variant.Cerbu.97355
Cylance Unsafe
K7GW Trojan ( 005723511 )
Cybereason malicious.9e9bff
Cyren W32/CookieStealer.I.gen!Eldorado
ESET-NOD32 multiple detections
APEX Malicious
Avast Win32:Trojan-gen
ClamAV Win.Malware.Fabookie-9797757-0
Kaspersky UDS:Trojan.Win32.Chapak.gen
BitDefender Gen:Variant.Cerbu.97355
NANO-Antivirus Trojan.Win32.Scrop.itenrc
MicroWorld-eScan Gen:Variant.Cerbu.97355
Ad-Aware Gen:Variant.Cerbu.97355
Sophos Generic ML PUA (PUA)
FireEye Gen:Variant.Cerbu.97355
Emsisoft Gen:Variant.Cerbu.97355 (B)
Avira HEUR/AGEN.1139112
eGambit Unsafe.AI_Score_55%
Microsoft Trojan:Win32/Ranumbot.RWA!MTB
Arcabit Trojan.Cerbu.D17C4B
GData Gen:Variant.Cerbu.97355
MAX malware (ai score=84)
VBA32 BScope.Trojan.CryptInject
Malwarebytes Malware.AI.2628208216
Rising Trojan.Kryptik!8.8 (CLOUD)
Ikarus not-a-virus:Client-IRC.Win32
MaxSecure Trojan-Ransom.Win32.Crypmod.zfq
AVG Win32:Trojan-gen
Qihoo-360 HEUR/QVM05.1.999C.Malware.Gen

How to remove Trojan:Win32/Ranumbot.RWA!MTB ransomware?

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 Trojan:Win32/Ranumbot.RWA!MTB 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 Trojan:Win32/Ranumbot.RWA!MTB 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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