Win32/Packed.Themida.AHT

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is Win32/Packed.Themida.AHT infection?

In this short article you will certainly find concerning the definition of Win32/Packed.Themida.AHT as well as its negative effect on your computer system. Such ransomware are a type of malware that is elaborated by online scams to demand paying the ransom by a sufferer.

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In the majority of the situations, Win32/Packed.Themida.AHT infection will instruct its victims to launch funds transfer for the function of neutralizing the changes that the Trojan infection has actually presented to the target’s tool.

Win32/Packed.Themida.AHT 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.
  • A process created a hidden window;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses Windows utilities for basic functionality;
  • Deletes its original binary from disk;
  • Detects the presence of Wine emulator via registry key;
  • Checks the version of Bios, possibly for anti-virtualization;
  • Detects VirtualBox through the presence of a registry key;
  • 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 papers located on the target’s hard disk drive — so the target can no more use the data;
  • Preventing routine accessibility 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.
Similar behavior
Related domains
z.whorecord.xyz BehavesLike.Win32.VirRansom.cc
a.tomx.xyz BehavesLike.Win32.VirRansom.cc

Win32/Packed.Themida.AHT

One of the most typical networks whereby Win32/Packed.Themida.AHT Ransomware Trojans are infused are:

  • By methods of phishing emails;
  • As a consequence of user winding up on a resource that organizes a malicious software program;

As soon as the Trojan is effectively injected, it will certainly either cipher the information on the sufferer’s PC or stop the tool from operating in a proper fashion – while likewise putting a ransom money note that states the need for the sufferers to impact the repayment for the purpose of decrypting the records or bring back the documents system back to the first condition. In many circumstances, the ransom money note will certainly turn up when the customer reboots the PC after the system has actually already been harmed.

Win32/Packed.Themida.AHT distribution channels.

In different edges of the world, Win32/Packed.Themida.AHT expands by leaps as well as bounds. Nonetheless, the ransom notes and also techniques of obtaining the ransom quantity may differ depending on certain local (regional) setups. The ransom notes as well as tricks of extorting the ransom quantity may vary depending on specific local (regional) setups.

Ransomware injection

For example:

    Faulty alerts concerning unlicensed software program.

    In certain locations, the Trojans frequently wrongfully report having detected some unlicensed applications allowed on the victim’s device. The alert after that requires the customer to pay the ransom.

    Faulty declarations concerning unlawful web content.

    In nations where software piracy is much less preferred, this technique is not as reliable for the cyber frauds. Alternatively, the Win32/Packed.Themida.AHT popup alert may incorrectly declare to be stemming from a police organization and will report having situated child pornography or other illegal information on the gadget.

    Win32/Packed.Themida.AHT popup alert may wrongly claim to be deriving from a regulation enforcement institution and will certainly report having located youngster porn or other prohibited data on the tool. The alert will likewise contain a demand for the individual to pay the ransom.

Technical details

File Info:

crc32: 0786E85E
md5: cc195a7d39d6c20a43ed57339c2fbc96
name: dn.opy
sha1: 6b87d1e6421c82a666135d265f81a22624a857e5
sha256: 6af255072547430417e72e86f0c204da087894e8429944bc9aa41a36f3ff12d9
sha512: 9e2fd852b3fa889b528db858f6db4fd188262ba1b0aede65b5d9742f7fce05b390de15872f99d3b2783d36d303111f0ab40d9da4c63e3cf49c2f9992150d3e37
ssdeep: 24576:xKyuaDlfJFtWx3pfuG1SN+WzkRQZZDu2eVZVgrQnzs:xPDRFw22DgrQzs
type: MS-DOS executable, MZ for MS-DOS

Version Info:

0: [No Data]

Win32/Packed.Themida.AHT also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.HfsAutoB.
DrWeb Trojan.Siggen8.26984
MicroWorld-eScan Trojan.GenericKD.41288974
FireEye Generic.mg.cc195a7d39d6c20a
McAfee Artemis!CC195A7D39D6
Cylance Unsafe
VIPRE Backdoor.Win32.Ircbot.gen (v)
Sangfor Malware
K7AntiVirus Trojan ( 004fca621 )
BitDefender Trojan.GenericKD.41288974
Cybereason malicious.d39d6c
BitDefenderTheta Gen:NN.ZexaF.34082.1uW@a4rMUQfi
APEX Malicious
Avast Win32:Trojan-gen
GData Trojan.GenericKD.41288974
Alibaba Packed:Win32/Themida.3d244387
NANO-Antivirus Trojan.Win32.TPM.fqhjru
AegisLab Trojan.Win32.Malicious.4!c
Rising Trojan.Fuerboos!8.EFC8 (CLOUD)
Ad-Aware Trojan.GenericKD.41288974
Emsisoft Trojan.GenericKD.41288974 (B)
Comodo Malware@#fteykkjmwq4f
F-Secure Trojan.TR/Crypt.TPM.Gen
Zillya Trojan.Packed.Win32.158673
Invincea heuristic
McAfee-GW-Edition BehavesLike.Win32.VirRansom.cc
Trapmine malicious.moderate.ml.score
Sophos Mal/Generic-S
SentinelOne DFI – Suspicious PE
Webroot W32.Trojan.Gen
Avira TR/Crypt.TPM.Gen
Endgame malicious (high confidence)
Arcabit Trojan.Generic.D276050E
Microsoft Trojan:Win32/Tiggre!rfn
AhnLab-V3 Packed/Win32.Agent.C3263041
Acronis suspicious
ALYac Trojan.GenericKD.41288974
MAX malware (ai score=96)
Malwarebytes Trojan.MalPack
Panda Trj/CI.A
ESET-NOD32 a variant of Win32/Packed.Themida.AHT
Tencent Win32.Trojan.Crypt.Syht
Yandex Trojan.Themida!
Ikarus Trojan.Win32.Themida
eGambit Trojan.Generic
Fortinet W32/PossibleThreat
AVG Win32:Trojan-gen
Paloalto generic.ml
CrowdStrike win/malicious_confidence_90% (W)
Qihoo-360 HEUR/QVM19.1.31ED.Malware.Gen

How to remove Win32/Packed.Themida.AHT virus?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
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The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

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 Win32/Packed.Themida.AHT 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 Win32/Packed.Themida.AHT 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/comparison

About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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