Ransom:Win32/Tobfy.O

What is Ransom:Win32/Tobfy.O infection?

In this article you will certainly discover about the interpretation of Ransom:Win32/Tobfy.O and its unfavorable effect on your computer. Such ransomware are a type of malware that is elaborated by on the internet frauds to require paying the ransom by a victim.

Most of the cases, Ransom:Win32/Tobfy.O infection will advise its victims to initiate funds move for the purpose of neutralizing the changes that the Trojan infection has actually introduced to the sufferer’s gadget.

Ransom:Win32/Tobfy.O 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);
• 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.
• Unconventionial language used in binary resources: Russian;
• Executed a process and injected code into it, probably while unpacking;
• A process attempted to delay the analysis task by a long amount of time.;
• A process was set to shut the system down when terminated;
• Behavior consistent with a dropper attempting to download the next stage.;
• 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
• Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
• Creates a copy of itself;
• Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
• Ciphering the documents situated on the victim’s hard drive — so the target can no longer make use of the information;
• Preventing regular access to the victim’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.

• • UDS:Worm.Script.Generic
  • MSIL/Kryptik.ZJG
  • Ransom:Win32/StopCrypt.MNK!MTB

z.whorecord.xyz	Ransom:Win32/Blocker.9e2a9ad9
a.tomx.xyz	Ransom:Win32/Blocker.9e2a9ad9
en.kurasawa.org.ng	Ransom:Win32/Blocker.9e2a9ad9
commerchuf.biz	Ransom:Win32/Blocker.9e2a9ad9
kazakholop.biz	Ransom:Win32/Blocker.9e2a9ad9

Ransom:Win32/Tobfy.O

The most normal channels through which Ransom:Win32/Tobfy.O Trojans are infused are:

• By means of phishing emails;
• As an effect of individual ending up on a resource that holds a harmful software;

As soon as the Trojan is effectively injected, it will certainly either cipher the data on the target’s PC or stop the gadget from functioning in a proper fashion – while additionally putting a ransom money note that discusses the requirement for the victims to effect 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 show up when the client reboots the COMPUTER after the system has actually already been damaged.

Ransom:Win32/Tobfy.O circulation channels.

In various edges of the globe, Ransom:Win32/Tobfy.O expands by jumps and also bounds. Nevertheless, the ransom notes as well as tricks of obtaining the ransom quantity might differ depending on particular regional (local) settings. The ransom notes and also techniques of extorting the ransom money amount might differ depending on specific neighborhood (local) setups.

As an example:

Faulty alerts regarding unlicensed software application.

In specific locations, the Trojans typically wrongfully report having actually identified some unlicensed applications enabled on the target’s gadget. The alert after that demands the customer to pay the ransom money.

Faulty statements about prohibited material.

In nations where software application piracy is less prominent, this method is not as effective for the cyber fraudulences. Conversely, the Ransom:Win32/Tobfy.O popup alert might wrongly assert to be deriving from a law enforcement organization and also will certainly report having located child porn or other illegal information on the tool.

Ransom:Win32/Tobfy.O popup alert may incorrectly assert to be obtaining from a law enforcement institution and will report having located kid pornography or various other unlawful information on the device. The alert will likewise include a need for the user to pay the ransom money.

Technical details

File Info:
crc32: 3E6CDC64md5: a47fa79d9fdfc45aa3a9d74c6f022d77name: A47FA79D9FDFC45AA3A9D74C6F022D77.mlwsha1: 023bf98e13772231f6d5607aad6afebbf236337csha256: 688e862ff915d0f5302f849928f1a28e8cb07a3c4b066ae0584fe9de02c1633bsha512: b389898ef9b23d4764e8f8008e46bd47f3f1bc435890783294abc0d563530445c300196f2adece6c651e9fdb1ff5296b686f329da6f11e65737495fe61c25780ssdeep: 384:alz7fuI75NRzvyER4zKQbionS2FbaiLYAUO8HY+:Y57dmG4zKQnS2FbaiLYAy4+type: PE32 executable (GUI) Intel 80386, for MS Windows
Version Info:
LegalCopyright: Copyright (C) 2012InternalName: dfsfdsFileVersion: 20964, 0, 0, 0ProductName: fsdfdsdfsProductVersion: 36080, 0, 0, 0FileDescription: fdsdfsOriginalFilename: fdsfdsfdsTranslation: 0x0000 0x04b0

Ransom:Win32/Tobfy.O also known as:

GridinSoft	Trojan.Ransom.Gen
Bkav	W32.AIDetect.malware1
K7AntiVirus	Spyware ( 0055e3f61 )
Elastic	malicious (high confidence)
DrWeb	Trojan.Click.64722
Cynet	Malicious (score: 100)
ALYac	Gen:Variant.Razy.770412
Cylance	Unsafe
Zillya	Trojan.Blocker.Win32.5213
Sangfor	Rootkit.Win32.Rustock.AY
CrowdStrike	win/malicious_confidence_100% (D)
Alibaba	Ransom:Win32/Blocker.9e2a9ad9
K7GW	Spyware ( 0055e3f61 )
Cybereason	malicious.d9fdfc
Symantec	ML.Attribute.HighConfidence
ESET-NOD32	Win32/TrojanClicker.Agent.NSC
APEX	Malicious
Avast	Win32:Rustock-AY [Rtk]
Kaspersky	Trojan-Ransom.Win32.Blocker.aqno
BitDefender	Gen:Variant.Razy.770412
NANO-Antivirus	Virus.Win32.Gen.ccmw
MicroWorld-eScan	Gen:Variant.Razy.770412
Tencent	Win32.Trojan.Blocker.ckhr
Ad-Aware	Gen:Variant.Razy.770412
Sophos	Mal/Generic-S
Comodo	Malware@#us3zo491jy7r
BitDefenderTheta	AI:Packer.1B0F28401F
VIPRE	Trojan.Win32.Generic!BT
McAfee-GW-Edition	BehavesLike.Win32.Generic.mt
FireEye	Generic.mg.a47fa79d9fdfc45a
Emsisoft	Gen:Variant.Razy.770412 (B)
SentinelOne	Static AI – Suspicious PE
Webroot	W32.Trojan.Gen
Avira	TR/Tobfy.O.1
eGambit	Generic.Malware
Microsoft	Ransom:Win32/Tobfy.O
Arcabit	Trojan.Razy.DBC16C
AegisLab	Trojan.Win32.Blocker.j!c
GData	Gen:Variant.Razy.770412
McAfee	Artemis!A47FA79D9FDF
MAX	malware (ai score=99)
VBA32	BScope.TrojanDropper.Sysn
Panda	Trj/Genetic.gen
Rising	Ransom.Tobfy!8.339 (CLOUD)
Yandex	Trojan.Blocker!JymGRQii3CI
Ikarus	Trojan-Ransom.Blocker
Fortinet	W32/Blocker.MUD!tr
AVG	Win32:Rustock-AY [Rtk]

How to remove Ransom:Win32/Tobfy.O virus?

There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft">².

Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

Download GridinSoft Anti-Malware

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.

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.

Press “Install” button.

Once installed, Anti-Malware will automatically run.

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Ransom:Win32/Tobfy.O 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.

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.

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 Anti-Malware

If the guide doesn’t help you to remove Ransom:Win32/Tobfy.O you can always ask me in the comments for getting help.

References

1. GridinSoft Anti-Malware Review from HowToFix site:
2. More information about GridinSoft products: