Win32/Packed.Themida.BCK

What is Win32/Packed.Themida.BCK infection?

In this post you will find about the meaning of Win32/Packed.Themida.BCK and its unfavorable impact on your computer. Such ransomware are a form of malware that is clarified by on-line scams to demand paying the ransom by a target.

In the majority of the cases, Win32/Packed.Themida.BCK ransomware will instruct its victims to launch funds transfer for the objective of neutralizing the amendments that the Trojan infection has actually presented to the victim’s device.

Win32/Packed.Themida.BCK 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 attempted to delay the analysis task.;
  • Expresses interest in specific running processes;
  • 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.

  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • Checks for the presence of known windows from debuggers and forensic tools;
  • The following process appear to have been packed with Themida: intervpnmix.exe;
  • Writes a potential ransom message to disk;
  • 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 records found on the sufferer’s hard drive — so the sufferer can no longer utilize the data;
  • Preventing normal access to the sufferer’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
iplogger.org TR/Ransom.vbhzq
jload09.info TR/Ransom.vbhzq

Win32/Packed.Themida.BCK

One of the most regular channels through which Win32/Packed.Themida.BCK Trojans are injected are:

  • By ways of phishing emails;
  • As a consequence of individual ending up on a resource that organizes a destructive software application;

As soon as the Trojan is effectively injected, it will either cipher the information on the sufferer’s PC or avoid the tool from operating in a correct fashion – while additionally putting a ransom note that mentions the demand for the sufferers to effect the payment for the function of decrypting the documents or bring back the documents system back to the initial problem. In most circumstances, the ransom money note will certainly turn up when the client restarts the COMPUTER after the system has already been harmed.

Win32/Packed.Themida.BCK circulation networks.

In numerous corners of the globe, Win32/Packed.Themida.BCK grows by jumps and bounds. Nonetheless, the ransom money notes as well as techniques of obtaining the ransom quantity may differ relying on certain neighborhood (regional) setups. The ransom notes and also techniques of extorting the ransom money quantity may differ depending on particular regional (regional) setups.

Ransomware injection

As an example:

    Faulty signals regarding unlicensed software.

    In certain locations, the Trojans frequently wrongfully report having actually found some unlicensed applications enabled on the target’s device. The alert after that requires the individual to pay the ransom.

    Faulty statements regarding illegal content.

    In nations where software program piracy is less preferred, this approach is not as efficient for the cyber fraudulences. Conversely, the Win32/Packed.Themida.BCK popup alert might incorrectly claim to be originating from a law enforcement organization and will report having situated youngster porn or various other unlawful information on the tool.

    Win32/Packed.Themida.BCK popup alert may incorrectly assert to be deriving from a legislation enforcement establishment and also will report having located child porn or other illegal information on the tool. The alert will likewise have a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: AC2D99D3md5: 4efa30519b6143c4180397976d284bcename: intervpnmix.exesha1: 33a9ffd4e4ed216534c9f92503e9d4eb1fce5e86sha256: 9c1f09b7d61670e53866d78ce5d58a87a5d518c67c51f2e67ce91bb517b523desha512: 4468f2fdab68ca21fdb43ebcd4a72d5d7845ff3e9f7cb8ee501da98bf645501a94d50eb85b529716cf414256412066c9dafea5d1d4f67bcfaa484142e7751672ssdeep: 196608:k5G3oFXzSHflKvlz/1tcko57xBTJu7sbsNaUSd7gcN/9e4E8tnSmgI:kA3oFXzGflK9z17stlwaUwle4EghgItype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Inter VPN SOFT Inc.ProductVersion: 2.2.1.0FileVersion: 2.2.1.0FileDescription: Translation: 0x0000 0x04b0

Win32/Packed.Themida.BCK also known as:

GridinSoft Trojan.Ransom.Gen
MicroWorld-eScan Trojan.GenericKD.42842857
McAfee Artemis!4EFA30519B61
Cylance Unsafe
Zillya Trojan.GenericKD.Win32.30057
Sangfor Malware
K7AntiVirus Trojan ( 0053a1a81 )
BitDefender Trojan.GenericKD.42842857
K7GW Trojan ( 0053a1a81 )
TrendMicro TROJ_GEN.R01FC0WCE20
APEX Malicious
Avast Win32:Trojan-gen
ClamAV Win.Malware.Stralo-7590910-0
GData Trojan.GenericKD.42842857
Kaspersky Trojan-PSW.Win32.Coins.vrh
Alibaba TrojanPSW:Win32/Coins.3a4a9090
AegisLab Trojan.Win32.Generic.j!c
Rising [email protected] (RDML:kosLBhtPsSo+/9AzHv3XZQ)
Endgame malicious (high confidence)
Emsisoft Trojan.GenericKD.42842857 (B)
Comodo Malware@#is7n73ihzjt8
F-Secure Heuristic.HEUR/AGEN.1038489
DrWeb Trojan.DownLoad4.13651
McAfee-GW-Edition BehavesLike.Win32.Dropper.rc
Sophos Mal/Generic-S
Ikarus Trojan-Downloader.Win32.Autohk
Cyren W32/Trojan.DAXT-4206
Avira TR/Ransom.vbhzq
eGambit Unsafe.AI_Score_99%
MAX malware (ai score=87)
Microsoft Trojan:Win32/Occamy.C
Arcabit Trojan.Generic.D28DBAE9
ZoneAlarm HEUR:Trojan-Downloader.Win32.Stralo.gen
AhnLab-V3 Malware/Win32.Generic.C4009781
Acronis suspicious
ALYac Trojan.GenericKD.42842857
Ad-Aware Trojan.GenericKD.42842857
Malwarebytes Trojan.Downloader.AHK.Themida
Panda Trj/CI.A
ESET-NOD32 a variant of Win32/Packed.Themida.BCK
TrendMicro-HouseCall TROJ_GEN.R01FC0WCE20
Tencent Win32.Trojan-qqpass.Qqrob.Piuk
Yandex Riskware.Unwanted!
MaxSecure Trojan.Malware.74705991.susgen
Fortinet W32/Coins.VRH!tr.pws
AVG Win32:Trojan-gen
Qihoo-360 Win32/Trojan.PSW.deb

How to remove Win32/Packed.Themida.BCK ransomware?

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

Run the setup file.

Run Setup.exe
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 Scanning

Click on “Clean Now”.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

Full version of GridinSoft

If the guide doesn’t help you to remove Win32/Packed.Themida.BCK you can always ask me in the comments for getting help.

References

    About the author

    Robert Bailey

    Security engineer focused on malware behavior, removal workflows, and Windows hardening. Robert reviews threat articles for practical accuracy, checking detection names, symptoms, and cleanup steps before publication.

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