Win32/Packed.Themida.BFS

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

What is Win32/Packed.Themida.BFS infection?

In this article you will discover regarding the definition of Win32/Packed.Themida.BFS and also its negative influence on your computer. Such ransomware are a form of malware that is elaborated by online scams to demand paying the ransom by a target.

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In the majority of the instances, Win32/Packed.Themida.BFS ransomware will certainly instruct its targets to start funds move for the objective of reducing the effects of the modifications that the Trojan infection has introduced to the target’s tool.

Win32/Packed.Themida.BFS 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.
  • 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;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers found on the sufferer’s disk drive — so the target can no more make use of the data;
  • Preventing normal 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
jload05.xyz BehavesLike.Win32.Ransom.vc

Win32/Packed.Themida.BFS

The most regular networks through which Win32/Packed.Themida.BFS are injected are:

  • By ways of phishing e-mails;
  • As a repercussion of user ending up on a resource that hosts a malicious software program;

As quickly as the Trojan is efficiently infused, it will either cipher the data on the sufferer’s PC or stop the device from functioning in a correct manner – while also positioning a ransom money note that mentions the need for the targets to impact the payment for the function of decrypting the papers or restoring the documents system back to the preliminary condition. In most circumstances, the ransom note will certainly turn up when the client reboots the COMPUTER after the system has already been damaged.

Win32/Packed.Themida.BFS distribution channels.

In different edges of the world, Win32/Packed.Themida.BFS expands by leaps and bounds. However, the ransom money notes and also techniques of obtaining the ransom money amount might vary relying on specific local (regional) settings. The ransom money notes and tricks of obtaining the ransom amount may differ depending on certain regional (regional) setups.

Ransomware injection

For instance:

    Faulty informs regarding unlicensed software application.

    In particular locations, the Trojans typically wrongfully report having actually found some unlicensed applications allowed on the target’s tool. The sharp then requires the individual to pay the ransom.

    Faulty statements about prohibited web content.

    In nations where software application piracy is much less preferred, this approach is not as effective for the cyber scams. Additionally, the Win32/Packed.Themida.BFS popup alert may falsely claim to be deriving from a law enforcement establishment as well as will certainly report having situated child pornography or other unlawful information on the gadget.

    Win32/Packed.Themida.BFS popup alert might falsely claim to be deriving from a regulation enforcement establishment as well as will certainly report having situated youngster pornography or other unlawful data on the device. The alert will in a similar way have a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: 4A2E5154
md5: 434e4da381596c1f17d672279b109669
name: marg.exe
sha1: 70460819793a80276e4107cd798aafa9494488a6
sha256: 4532155df3dd445a1cb8e4ba81f35595bff48e1bf3c5452260218610e9c4e044
sha512: 4d690e10c1b626daec95cfe5f204fcfb4c70fc7fc924285a85582cf9afd4bf9ec5b221a4e59ee5c45614d51ef08522f80141d95f438c3d02301428ca7fed9c39
ssdeep: 49152:ItwVhyz5TuvmVe6CAAnQX5bAbZq02lY/kTvPleUiBD0:p/ytVejn25iZ/Ni
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

Win32/Packed.Themida.BFS also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.HfsAutoB.
DrWeb Trojan.Siggen9.16057
FireEye Generic.mg.434e4da381596c1f
McAfee Artemis!434E4DA38159
Cylance Unsafe
K7AntiVirus Trojan ( 0054af121 )
K7GW Trojan ( 0054af121 )
CrowdStrike win/malicious_confidence_100% (W)
TrendMicro Trojan.Win32.WACATAC.THBBIBO
Symantec Trojan.Gen.MBT
APEX Malicious
Paloalto generic.ml
GData Win32.Trojan.Ilgergop.CT8DDI
Kaspersky HEUR:Trojan-Downloader.Win32.Stralo.vho
Alibaba Packed:Win32/Themida.3b5369c6
AegisLab Trojan.Win32.Stralo.a!c
Avast Win32:Trojan-gen
Tencent Win32.Trojan.Agent.Paly
Endgame malicious (high confidence)
Sophos Mal/Generic-S
F-Secure Heuristic.HEUR/AGEN.1038489
Invincea heuristic
McAfee-GW-Edition BehavesLike.Win32.Ransom.vc
Ikarus Trojan-Downloader.Win32.Autohk
Jiangmin TrojanDownloader.Stralo.cz
eGambit Unsafe.AI_Score_96%
Avira HEUR/AGEN.1038489
Microsoft Trojan:Win32/Tiggre!rfn
ZoneAlarm HEUR:Trojan-Downloader.Win32.Stralo.vho
Acronis suspicious
Malwarebytes Trojan.Downloader.AHK.Themida
ESET-NOD32 a variant of Win32/Packed.Themida.BFS
TrendMicro-HouseCall Trojan.Win32.WACATAC.THBBIBO
Rising Downloader.Stralo!8.1147C (CLOUD)
SentinelOne DFI – Suspicious PE
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Themida.ASK!tr
AVG Win32:Trojan-gen
Cybereason malicious.9793a8
Qihoo-360 Generic/HEUR/QVM19.1.8FBD.Malware.Gen

How to remove Win32/Packed.Themida.BFS 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.BFS 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.BFS 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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