Ransom:Win32/Tobfy.A

Written by Robert Bailey

What is Ransom:Win32/Tobfy.A infection?

In this article you will certainly discover about the interpretation of Ransom:Win32/Tobfy.A and its adverse influence on your computer system. Such ransomware are a kind of malware that is specified by on-line frauds to require paying the ransom by a target.

GridinSoft Anti-Malware Review

It is better to prevent, than repair and repent!

When we talk about the intrusion of unfamiliar programs into your computer’s work, the proverb “Forewarned is forearmed” describes the situation as accurately as possible. Gridinsoft Anti-Malware is exactly the tool that is always useful to have in your armory: fast, efficient, up-to-date. It is appropriate to use it as an emergency help at the slightest suspicion of infection.
GridinSoft Anti-Malware 6-day trial available.
EULA | Privacy Policy | GridinSoft

In the majority of the cases, Ransom:Win32/Tobfy.A ransomware will certainly instruct its sufferers to initiate funds transfer for the objective of reducing the effects of the amendments that the Trojan infection has introduced to the victim’s device.

Ransom:Win32/Tobfy.A Summary

These adjustments can be as adheres to:

  • Injection (inter-process);
  • Injection (Process Hollowing);
  • 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.
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Executed a process and injected code into it, probably while unpacking;
  • 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
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files situated on the victim’s hard disk drive — so the sufferer can no more make use of the information;
  • Preventing normal accessibility to the victim’s workstation;

Ransom:Win32/Tobfy.A

The most typical networks through which Ransom:Win32/Tobfy.A Trojans are infused are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As a consequence of individual ending up on a resource that organizes a harmful software application;

As soon as the Trojan is efficiently infused, it will certainly either cipher the data on the victim’s PC or avoid the device from operating in a correct fashion – while also placing a ransom money note that states the demand for the sufferers to effect the payment for the function of decrypting the papers or recovering the data system back to the first problem. In a lot of circumstances, the ransom money note will certainly show up when the customer restarts the COMPUTER after the system has currently been harmed.

Ransom:Win32/Tobfy.A circulation channels.

In different corners of the globe, Ransom:Win32/Tobfy.A expands by jumps as well as bounds. Nonetheless, the ransom money notes and also methods of extorting the ransom money amount may vary depending upon specific neighborhood (local) setups. The ransom money notes and techniques of obtaining the ransom amount might vary depending on certain local (local) settings.

Ransomware injection

For instance:

    Faulty signals about unlicensed software program.

    In certain locations, the Trojans frequently wrongfully report having actually identified some unlicensed applications enabled on the target’s tool. The alert after that requires the individual to pay the ransom money.

    Faulty declarations regarding unlawful web content.

    In countries where software program piracy is much less prominent, this technique is not as efficient for the cyber frauds. Additionally, the Ransom:Win32/Tobfy.A popup alert may wrongly claim to be deriving from a police organization as well as will certainly report having situated youngster pornography or other prohibited information on the gadget.

    Ransom:Win32/Tobfy.A popup alert may wrongly assert to be obtaining from a legislation enforcement institution and also will certainly report having located child pornography or other illegal information on the gadget. The alert will similarly contain a demand for the customer to pay the ransom.

Technical details

File Info:

crc32: 5FE9F58D
md5: 2031bacf48d2fd68238cce7f9587326d
name: 2031BACF48D2FD68238CCE7F9587326D.mlw
sha1: 8d48327a43f03cfe660adee30dc080ccbbdeac39
sha256: 7ff1012dd550d17cdf477400657cf74c7af82ea1680a0e664c4d984022feca89
sha512: 86ac84c6631e3d5bfa09c0e2b3f8d0791ef813dc12461a298ffd094d65bf66310451f18f0e71a502da557a90659a3908fb0efeb64703101c5435a060937c15f0
ssdeep: 1536:KyeMLyr2hLKaj5ZKRr7egv65KU1gtlSGUGlGIrzQhcGaNIra5QmswrLffFsuvou:Kye7r2huvvIKU1gLGIrziBfa5dsedsu
type: PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows

Version Info:

0: [No Data]

Ransom:Win32/Tobfy.A also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 0040f1d41 )
Elastic malicious (high confidence)
DrWeb Trojan.Winlock.6673
Cynet Malicious (score: 100)
ALYac Gen:Variant.Symmi.3468
Cylance Unsafe
Zillya Trojan.Foreign.Win32.1718
Sangfor Trojan.Win32.Save.a
Alibaba Trojan:Win32/Injector.5d501cee
K7GW Trojan ( 0040f1d41 )
Cybereason malicious.f48d2f
ESET-NOD32 a variant of Win32/Injector.XUL
APEX Malicious
TotalDefense Win32/Ransom.ATQ
Avast Sf:Crypt-EX [Trj]
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Symmi.3468
NANO-Antivirus Virus.Win32.Gen-Crypt.ccnc
ViRobot Trojan.Win32.A.Foreign.89088.B
MicroWorld-eScan Gen:Variant.Symmi.3468
Tencent Win32.Trojan.Generic.Hnav
Ad-Aware Gen:Variant.Symmi.3468
Sophos ML/PE-A + Troj/Ransom-JQ
Comodo Suspicious@#2w1v7s4xzs9no
F-Secure Trojan.TR/Crypt.XPACK.Gen8
BitDefenderTheta Gen:NN.ZexaF.34628.fGW@aGZdsDmi
VIPRE Worm.Win32.Dorkbot.i (v)
TrendMicro TROJ_RANSOM.SMO7
McAfee-GW-Edition BehavesLike.Win32.Generic.mc
FireEye Generic.mg.2031bacf48d2fd68
Emsisoft Gen:Variant.Symmi.3468 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan/Foreign.aze
Webroot Trojan.Dropper.Gen
Avira TR/Crypt.XPACK.Gen8
Antiy-AVL Trojan/Win32.AGeneric
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Ransom:Win32/Tobfy.A
Arcabit Trojan.Symmi.DD8C
AegisLab Trojan.Win32.Foreign.j!c
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Gen:Variant.Symmi.3468
AhnLab-V3 Trojan/Win32.Yakes.C164406
Acronis suspicious
McAfee Ransom-ABD.gen.a
MAX malware (ai score=100)
VBA32 BScope.Malware-Cryptor.Oop
Malwarebytes Generic.Malware/Suspicious
Panda Trj/Genetic.gen
TrendMicro-HouseCall TROJ_RANSOM.SMO7
Rising Ransom.Tobfy!8.339 (CLOUD)
Yandex Trojan.Injector!iW5URzbgSQU
Ikarus Trojan.Win32.Yakes
Fortinet W32/Kryptik.4C06!tr
AVG Sf:Crypt-EX [Trj]
Paloalto generic.ml
Qihoo-360 Win32/Trojan.Ransom.683

How to remove Ransom:Win32/Tobfy.A 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 Ransom:Win32/Tobfy.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 Ransom:Win32/Tobfy.A you can always ask me in the comments for getting help.

Sending
User Review
0 (0 votes)
Comments Rating 0 (0 reviews)

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.

Leave a Reply

Sending

This site uses Akismet to reduce spam. Learn how your comment data is processed.