Trojan.Downloader.AHK.Themida

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

What is Trojan.Downloader.AHK.Themida infection?

In this post you will find regarding the definition of Trojan.Downloader.AHK.Themida as well as its adverse effect on your computer system. Such ransomware are a form of malware that is specified by on-line scams to require paying the ransom by a sufferer.

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Most of the cases, Trojan.Downloader.AHK.Themida ransomware will certainly instruct its targets to start funds move for the purpose of reducing the effects of the changes that the Trojan infection has actually introduced to the victim’s device.

Trojan.Downloader.AHK.Themida Summary

These modifications 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 attempted to delay the analysis task.;
  • Expresses interest in specific running processes;
  • 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;
  • The following process appear to have been packed with Themida: marg.exe;
  • Checks for the presence of known devices from debuggers and forensic tools;
  • 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.
  • Ciphering the files found on the sufferer’s hard disk drive — so the sufferer can no longer use the data;
  • 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.
Similar behavior
Related domains
jload04.infoBehavesLike.Win32.Ransom.vc

Trojan.Downloader.AHK.Themida

One of the most common networks whereby Trojan.Downloader.AHK.Themida Ransomware 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 an effect of user winding up on a source that holds a harmful software application;

As quickly as the Trojan is efficiently injected, it will either cipher the information on the target’s PC or protect against the tool from functioning in a proper manner – while also placing a ransom money note that points out the requirement for the victims to impact the payment for the objective of decrypting the files or bring back the data system back to the first condition. In a lot of instances, the ransom money note will certainly turn up when the customer reboots the COMPUTER after the system has actually already been damaged.

Trojan.Downloader.AHK.Themida distribution channels.

In different corners of the globe, Trojan.Downloader.AHK.Themida grows by jumps and bounds. However, the ransom money notes and also methods of extorting the ransom amount might vary depending upon specific local (regional) settings. The ransom notes and also tricks of obtaining the ransom quantity may differ depending on particular regional (local) setups.

Ransomware injection

For example:

    Faulty informs concerning unlicensed software application.

    In certain areas, the Trojans often wrongfully report having spotted some unlicensed applications allowed on the victim’s device. The alert after that demands the individual to pay the ransom money.

    Faulty statements regarding unlawful web content.

    In countries where software piracy is much less preferred, this approach is not as effective for the cyber fraudulences. Conversely, the Trojan.Downloader.AHK.Themida popup alert may falsely declare to be stemming from a law enforcement establishment as well as will report having situated child porn or other illegal data on the gadget.

    Trojan.Downloader.AHK.Themida popup alert might wrongly declare to be deriving from a legislation enforcement institution and also will report having situated kid porn or other illegal data on the device. The alert will in a similar way include a need for the customer to pay the ransom money.

Technical details

File Info:

crc32: 82DFEEC1
md5: 990b4d168997fda50171d2db7c67a423
name: marg.exe
sha1: a682ddeb4dc64c9f3bc1e58575b7fa510c689ce4
sha256: 2bbf1a958efb4839f88cdabc6486df1f117ee81c6cd26675e06b6e4bf443e149
sha512: f3acd8094cd6bc23347c18acfb6a8cba2f34303898645c57cfcdcdb9d0173efef330732810abd313335adba93b883d578e45e9c15ce81cf7d86c2a8dba37ed96
ssdeep: 49152:577zIq8PUNAgek+uNbJDE8Pm6D8nQZ7ogvD/u01B9JirbZWpt:17zmPUNCkNbxXuM8nQ7tT1B9wPZ
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright:
InternalName:
FileVersion: 1.1.30.00
ProductName:
ProductVersion: 1.1.30.00
FileDescription:
OriginalFilename:
Translation: 0x0409 0x04b0

Trojan.Downloader.AHK.Themida also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.ThemidaPTN.Trojan
DrWebTrojan.Siggen9.15953
FireEyeGeneric.mg.990b4d168997fda5
McAfeeArtemis!990B4D168997
CylanceUnsafe
AegisLabTrojan.Win32.Dapato.b!c
K7AntiVirusTrojan ( 00559ab31 )
K7GWTrojan ( 00559ab31 )
Cybereasonmalicious.b4dc64
SymantecTrojan.Gen.MBT
APEXMalicious
AvastWin32:Malware-gen
GDataWin32.Trojan.Ilgergop.K0YV1O
KasperskyHEUR:Trojan-Dropper.Win32.Dapato.vho
AlibabaPacked:Win32/Themida.df0ef86a
NANO-AntivirusTrojan.Win32.Dapato.hcznex
TencentWin32.Trojan.Agent.Hryp
SophosMal/Generic-S
ComodoMalware@#1quysxhr3gxbx
F-SecureHeuristic.HEUR/AGEN.1038489
Invinceaheuristic
McAfee-GW-EditionBehavesLike.Win32.Ransom.vc
IkarusTrojan-Downloader.Win32.Autohk
CyrenW32/Trojan.MKCW-3311
MaxSecureTrojan.Malware.300983.susgen
AviraHEUR/AGEN.1038489
Endgamemalicious (high confidence)
ZoneAlarmHEUR:Trojan-Dropper.Win32.Dapato.vho
MicrosoftTrojan:Win32/Occamy.C
Acronissuspicious
MalwarebytesTrojan.Downloader.AHK.Themida
ESET-NOD32a variant of Win32/Packed.Themida.GZV
TrendMicro-HouseCallTROJ_GEN.R002H07BR20
RisingDropper.Dapato!8.2A2 (CLOUD)
SentinelOneDFI – Malicious PE
eGambitUnsafe.AI_Score_99%
FortinetW32/Themida.ASK!tr
AVGWin32:Malware-gen
Paloaltogeneric.ml
CrowdStrikewin/malicious_confidence_100% (W)
Qihoo-360Win32/Trojan.Dropper.fba

How to remove Trojan.Downloader.AHK.Themida 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

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 Trojan.Downloader.AHK.Themida 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.Downloader.AHK.Themida 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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