Backdoor:Win32/Konus.A

What is Backdoor:Win32/Konus.A infection?

In this article you will find concerning the meaning of Backdoor:Win32/Konus.A and also its negative effect on your computer system. Such ransomware are a kind of malware that is elaborated by online frauds to demand paying the ransom money by a sufferer.

Most of the instances, Backdoor:Win32/Konus.A infection will instruct its sufferers to launch funds transfer for the objective of neutralizing the changes that the Trojan infection has actually presented to the sufferer’s gadget.

Backdoor:Win32/Konus.A 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.
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • Injection with CreateRemoteThread in a remote process;
  • 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.
  • Starts servers listening on 127.0.0.1:32767, 127.0.0.1:32768;
  • 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.

  • Queries information on disks, possibly for anti-virtualization. Since VMs share the same disk space so it is expected that they won’t be getting as much space as an application running on
    native hardware will have access to.
  • Attempts to remove evidence of file being downloaded from the Internet;
  • Executed a process and injected code into it, probably while unpacking;
  • A process attempted to delay the analysis task by a long amount of time.;
  • Tries to unhook or modify Windows functions monitored by Cuckoo;
  • Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Clears Windows events or logs;
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Attempts to modify Explorer settings to prevent file extensions from being displayed;
  • Attempts to modify Explorer settings to prevent hidden files from being displayed;
  • Ciphering the documents located on the sufferer’s hard disk — so the sufferer can no more utilize 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.

Backdoor:Win32/Konus.A

The most typical networks through which Backdoor:Win32/Konus.A are injected are:

  • By ways of phishing e-mails;
  • As a repercussion of individual winding up on a resource that holds a harmful software;

As quickly as the Trojan is efficiently injected, it will certainly either cipher the information on the target’s computer or protect against the gadget from operating in an appropriate way – while also placing a ransom money note that states the demand for the victims to impact the payment for the function of decrypting the files or bring back the file system back to the preliminary condition. In most circumstances, the ransom money note will turn up when the customer restarts the COMPUTER after the system has already been harmed.

Backdoor:Win32/Konus.A distribution networks.

In different corners of the globe, Backdoor:Win32/Konus.A grows by jumps as well as bounds. Nonetheless, the ransom money notes as well as tricks of obtaining the ransom money amount might differ depending upon specific regional (local) setups. The ransom money notes as well as tricks of extorting the ransom money amount might differ depending on certain local (local) setups.

Ransomware injection

As an example:

    Faulty informs concerning unlicensed software.

    In particular locations, the Trojans frequently wrongfully report having spotted some unlicensed applications enabled on the sufferer’s tool. The alert then requires the customer to pay the ransom.

    Faulty statements about illegal material.

    In countries where software program piracy is less popular, this technique is not as efficient for the cyber scams. Conversely, the Backdoor:Win32/Konus.A popup alert might incorrectly claim to be originating from a law enforcement establishment as well as will certainly report having situated child porn or other unlawful information on the tool.

    Backdoor:Win32/Konus.A popup alert might falsely declare to be deriving from a regulation enforcement establishment and also will certainly report having situated kid porn or other illegal information on the tool. The alert will likewise have a requirement for the individual to pay the ransom money.

Technical details

File Info:

crc32: E95AB515md5: 9ad9a8d1ba6c0440edaafe81b7934db2name: 9AD9A8D1BA6C0440EDAAFE81B7934DB2.mlwsha1: 8bba2a011f72d2016b65d3c4e9e7cbee9a4cf27fsha256: 0c22dbc5e7f67c0bbd1cccc57472b03ce4f9da81e3e5a2d90309e382021e3831sha512: 6faa0b8000d6969fa3997ace614737b0981b33d448c64b3a1a4d2525773b41bae3afb6925b721b82e1b992bad33934d3906a5d3ac291b1ade9a2e13459548443ssdeep: 6144:0W+7+eMnFVjJetPYvAP7mAYFkrhUerTti0lvUWDYuxwivrQyASsUm90pBLi5Fc7U:0RuFVNe6lAYFkrhRNlvUHuxw0rQtSsthtype: PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive

Version Info:

LegalCopyright: (C) 2016 OracleInternalName: VBoxWindowsAdditions-x86.exeFileVersion: VBox 5.0.1.0CompanyName: OracleProductName: VBox Guest AdditionsProductVersion: 5.0.1.0FileDescription: VBox Guest AdditionsTranslation: 0x040c 0x04e4

Backdoor:Win32/Konus.A also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 004fb47d1 )
DrWeb Trojan.DownLoader23.11526
Cynet Malicious (score: 100)
CAT-QuickHeal Trojan.Generic
ALYac Gen:Variant.Ransom.2019
Cylance Unsafe
Zillya Trojan.GenericKD.Win32.128264
Sangfor Backdoor.Win32.Konus.8
CrowdStrike win/malicious_confidence_90% (W)
Alibaba Trojan:Win32/Injector.16b77291
K7GW Trojan ( 004fb47d1 )
Cybereason malicious.1ba6c0
Symantec ML.Attribute.HighConfidence
ESET-NOD32 NSIS/Injector.HF
APEX Malicious
Avast Win32:Malware-gen
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Ransom.2019
NANO-Antivirus Trojan.Win32.Blocker.eijwlg
SUPERAntiSpyware Ransom.Locky/Variant
MicroWorld-eScan Gen:Variant.Ransom.2019
Tencent Win32.Trojan.Generic.Hxgj
Ad-Aware Gen:Variant.Ransom.2019
Sophos Mal/Generic-R + Mal/Miuref-L
Comodo Malware@#3prpg41gdkyx7
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_NSISRansom.SM001
McAfee-GW-Edition BehavesLike.Win32.Dropper.fc
FireEye Gen:Variant.Ransom.2019
Emsisoft Gen:Variant.Ransom.2019 (B)
Webroot Trojan.Dropper.Gen
Avira HEUR/AGEN.1102533
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Backdoor:Win32/Konus.A
Arcabit Trojan.Ransom.D7E3
AegisLab Trojan.Win32.Generic.4!c
GData Gen:Variant.Ransom.2019
TACHYON Ransom/W32.Blocker.392130
AhnLab-V3 Trojan/Win32.Locky.C1614510
McAfee Artemis!9AD9A8D1BA6C
MAX malware (ai score=89)
VBA32 Trojan.Downloader
Malwarebytes Ransom.Cerber
Panda Trj/CI.A
TrendMicro-HouseCall Ransom_NSISRansom.SM001
Fortinet W32/Injector.HC!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Trojan.Ransom.e0e

How to remove Backdoor:Win32/Konus.A 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 Backdoor:Win32/Konus.A 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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