Trojan:Win32/Tonmye!A

Written by Robert Bailey

What is Trojan:Win32/Tonmye!A infection?

In this short article you will find regarding the interpretation of Trojan:Win32/Tonmye!A and its unfavorable influence on your computer. Such ransomware are a type of malware that is specified by on-line frauds to require paying the ransom money by a target.

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In the majority of the cases, Trojan:Win32/Tonmye!A ransomware will instruct its targets to start funds move for the purpose of neutralizing the changes that the Trojan infection has introduced to the sufferer’s gadget.

Trojan:Win32/Tonmye!A Summary

These alterations 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.
  • 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.

  • Unconventionial binary language: Chinese (Simplified);
  • Unconventionial language used in binary resources: Chinese (Simplified);
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Checks for the presence of known windows from debuggers and forensic tools;
  • Tries to unhook or modify Windows functions monitored by Cuckoo;
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Checks for the presence of known devices from debuggers and forensic tools;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents found on the target’s disk drive — so the target can no more use 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/Tonmye!A

The most normal channels where Trojan:Win32/Tonmye!A are injected are:

  • By means of phishing emails;
  • As a repercussion of user winding up on a resource that holds a harmful software application;

As soon as the Trojan is effectively infused, it will either cipher the data on the sufferer’s PC or protect against the gadget from operating in a proper manner – while also placing a ransom note that mentions the need for the victims to effect the payment for the objective of decrypting the files or bring back the file system back to the first problem. In most circumstances, the ransom money note will show up when the customer restarts the PC after the system has currently been harmed.

Trojan:Win32/Tonmye!A distribution networks.

In numerous edges of the globe, Trojan:Win32/Tonmye!A expands by jumps as well as bounds. Nevertheless, the ransom money notes and techniques of extorting the ransom money amount may vary depending on particular local (regional) settings. The ransom notes as well as techniques of extorting the ransom money amount might vary depending on particular neighborhood (regional) setups.

Ransomware injection

For example:

    Faulty alerts concerning unlicensed software program.

    In particular locations, the Trojans usually wrongfully report having discovered some unlicensed applications allowed on the sufferer’s tool. The alert then demands the user to pay the ransom.

    Faulty declarations about illegal content.

    In countries where software application piracy is less popular, this technique is not as efficient for the cyber scams. Conversely, the Trojan:Win32/Tonmye!A popup alert might wrongly claim to be stemming from a law enforcement organization and will report having situated kid porn or other illegal information on the device.

    Trojan:Win32/Tonmye!A popup alert may wrongly declare to be deriving from a legislation enforcement organization as well as will report having situated child porn or various other unlawful data on the gadget. The alert will likewise contain a demand for the customer to pay the ransom.

Technical details

File Info:

crc32: 79261BF0
md5: 587254f69634635fe2dbc23abf33df60
name: 587254F69634635FE2DBC23ABF33DF60.mlw
sha1: 5affb654e8e7fb6c501cb79d7915f7e36a638daf
sha256: 398e3395f45261109aad3bd45f1fe6cb9dc4ca0f6aaefc29e3a8e3e10b6abffb
sha512: f801e8caf5423732c5d935f02b5e0890c6ac78d76b0ece9c791c510aef5edccf3abde47d7ac0c6551facd893649806d2c76ebf498348c5aaef7a981e00263fa5
ssdeep: 49152:B6papF/l2d0uVRlxC/zhlm3+qCAOctMd8Ja:wE/8d0eRlxSj4+qTjWdL
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: x6d3ex5927x661fQQ:892369441
FileVersion: 4.3.1.1
CompanyName: x6d3ex5927x661fQQ:892369441
Comments: x6d3ex5927x661fx96f7x7535x591ax5f00x52a9x624b
ProductName: x6d3ex5927x661fx96f7x7535x591ax5f00x52a9x624b
ProductVersion: 4.3.1.1
FileDescription: x6d3ex5927x661fx96f7x7535x591ax5f00x52a9x624b
Translation: 0x0804 0x04b0

Trojan:Win32/Tonmye!A also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Riskware ( 0040eff71 )
Elastic malicious (high confidence)
Cynet Malicious (score: 100)
Cylance Unsafe
CrowdStrike win/malicious_confidence_90% (W)
Alibaba Trojan:Win32/Tonmye.2cbdce23
K7GW Riskware ( 0040eff71 )
Cybereason malicious.4e8e7f
Cyren W32/Fujack.U
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:Rootkit-gen [Rtk]
Kaspersky VHO:HackTool.Win32.Convagent.gen
ViRobot Backdoor.Win32.IRCBot.35288
Sophos Mal/Generic-S
Comodo TrojWare.Win32.Spy.KeyLogger.~P@19qrg4
BitDefenderTheta Gen:NN.ZexaF.34690.0j0aa0O3Jlhb
VIPRE Trojan.Crypt.AntiSig.b (v)
TrendMicro TROJ_GEN.R005C0DEG21
McAfee-GW-Edition BehavesLike.Win32.VirRansom.tc
FireEye Generic.mg.587254f69634635f
SentinelOne Static AI – Malicious PE
eGambit Unsafe.AI_Score_99%
Kingsoft Win32.Heur.KVMH008.a.(kcloud)
Microsoft Trojan:Win32/Tonmye.gen!A
Gridinsoft Trojan.Heur!.038120E1
AhnLab-V3 Win32/MalPackedB.suspicious
McAfee Downloader-BOP.f!rootkit
VBA32 BScope.Trojan.Downloader
Panda Trj/CI.A
TrendMicro-HouseCall TROJ_GEN.R005C0DEG21
Rising Malware.Heuristic!ET#99% (RDMK:cmRtazprW9BJCiIzmAwLbPuIPuGW)
Yandex Packed/RLPack
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/BOP_f.ROOTKIT!tr.dldr
AVG Win32:Rootkit-gen [Rtk]
Paloalto generic.ml

How to remove Trojan:Win32/Tonmye!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 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/Tonmye!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:

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If the guide doesn’t help you to remove Trojan:Win32/Tonmye!A 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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