Win32/Injector.DKRU

What is Win32/Injector.DKRU infection?

In this article you will locate regarding the meaning of Win32/Injector.DKRU and its negative effect on your computer system. Such ransomware are a type of malware that is clarified by on the internet scams to demand paying the ransom by a target.

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Most of the cases, Win32/Injector.DKRU infection will instruct its sufferers to start funds transfer for the purpose of neutralizing the modifications that the Trojan infection has presented to the victim’s device.

Win32/Injector.DKRU 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.
  • 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.
  • Possible date expiration check, exits too soon after checking local time;
  • A process attempted to delay the analysis task.;
  • At least one IP Address, Domain, or File Name was found in a crypto call;
  • 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.

  • 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;
  • Attempts to delete volume shadow copies;
  • Executed a process and injected code into it, probably while unpacking;
  • Attempts to remove evidence of file being downloaded from the Internet;
  • 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;
  • Installs itself for autorun at Windows startup. There is simple tactic using the Windows startup folder located at:
    C:\Users\[user-name]\AppData\Roaming\Microsoft\Windows\StartMenu\Programs\Startup. Shortcut links (.lnk extension) placed in this folder will cause Windows to launch the application each time [user-name] logs into Windows.

    The registry run keys perform the same action, and can be located in different locations:

    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • 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;
  • Creates a copy of itself;
  • 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 records found on the victim’s hard disk drive — so the victim can no more make use of the information;
  • Preventing normal access 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.

Win32/Injector.DKRU

The most typical channels where Win32/Injector.DKRU Trojans are injected are:

  • By means of phishing emails;
  • As an effect of customer ending up on a source that organizes a destructive software application;

As soon as the Trojan is effectively injected, it will either cipher the data on the target’s PC or prevent the gadget from operating in an appropriate way – while additionally placing a ransom money note that points out the need for the victims to impact the repayment for the objective of decrypting the files or bring back the file system back to the initial condition. In the majority of circumstances, the ransom note will turn up when the client restarts the COMPUTER after the system has actually currently been harmed.

Win32/Injector.DKRU distribution channels.

In various edges of the world, Win32/Injector.DKRU grows by leaps and also bounds. However, the ransom money notes and also tricks of obtaining the ransom amount may vary depending upon certain local (local) settings. The ransom notes and techniques of obtaining the ransom quantity might vary depending on specific local (local) settings.

Ransomware injection

For example:

    Faulty notifies concerning unlicensed software.

    In certain areas, the Trojans typically wrongfully report having actually spotted some unlicensed applications enabled on the sufferer’s tool. The alert after that requires the customer to pay the ransom.

    Faulty statements about illegal web content.

    In countries where software piracy is less popular, this technique is not as effective for the cyber scams. Additionally, the Win32/Injector.DKRU popup alert may falsely claim to be deriving from a law enforcement organization and also will certainly report having situated youngster porn or various other prohibited information on the gadget.

    Win32/Injector.DKRU popup alert might incorrectly claim to be acquiring from a law enforcement organization and will certainly report having located child porn or various other illegal data on the tool. The alert will likewise contain a requirement for the user to pay the ransom.

Technical details

File Info:

crc32: 42C1FEA3
md5: 2afa56ef25321a18753e9333dea986d1
name: 2AFA56EF25321A18753E9333DEA986D1.mlw
sha1: 39bc7fc3c50bc5b022dfbb8777ac099c023f1c25
sha256: 95b8aa2d02a19f0e92f08fc88627c7090c3e8c34699e7999cfa45f72cb815b0c
sha512: dd2d1502172cbf1ce26816e55364c23d677400cef09f32210582dc4219230580ef626903dfa623b300301e0e1aed206bdab0f4873644a22daacf1e1c61e872f8
ssdeep: 3072:sxgeEqdSGspUL8bmXsH9jqspyMBs0XBvPhN0SXfZrC3X3Ee+:sme9dSGspULf6YWsSBvTJByX3a
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Injector.DKRU also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 005042271 )
Elastic malicious (high confidence)
DrWeb BackDoor.Siggen.60255
Cynet Malicious (score: 100)
ALYac Trojan.Ransom.Spora
Cylance Unsafe
Zillya Backdoor.Androm.Win32.39468
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Spora.3d0c09bd
K7GW Trojan ( 005042271 )
Cybereason malicious.f25321
Cyren W32/Ransom.DX.gen!Eldorado
Symantec Ransom.Spora
ESET-NOD32 a variant of Win32/Injector.DKRU
APEX Malicious
Avast Win32:Filecoder-W [Trj]
ClamAV Win.Trojan.Agent-6258677-0
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Ransom.Spora.32
NANO-Antivirus Trojan.Win32.Filecoder.elkrrz
ViRobot Trojan.Win32.S.Ransom.196608
SUPERAntiSpyware Trojan.Agent/Gen-Dynamer
MicroWorld-eScan Gen:Variant.Ransom.Spora.32
Tencent Malware.Win32.Gencirc.10b6a3c6
Ad-Aware Gen:Variant.Ransom.Spora.32
Sophos Mal/Generic-S
Comodo Malware@#3kz1nj512jc5x
BitDefenderTheta Gen:NN.ZexaF.34628.mqW@a8Y9Kp
VIPRE FraudTool.Win32.SecurityShield.ek!c (v)
TrendMicro Ransom_CERBER.AUSTF
McAfee-GW-Edition Ransom-Spora.b
FireEye Generic.mg.2afa56ef25321a18
Emsisoft Gen:Variant.Ransom.Spora.32 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Gen.dv
Webroot Trojan.Dropper.Gen
Avira HEUR/AGEN.1108565
Kingsoft Win32.Infected.AutoInfector.a.(kcloud)
Microsoft Ransom:Win32/Spora.A
Arcabit Trojan.Ransom.Spora.32
AegisLab Trojan.Win32.Generic.4!c
GData Gen:Variant.Ransom.Spora.32
TACHYON Backdoor/W32.Androm.196608.K
AhnLab-V3 Trojan/Win32.Spora.R194589
Acronis suspicious
McAfee Ransom-Spora.b
MAX malware (ai score=100)
VBA32 Backdoor.Androm
Malwarebytes Ransom.Spora
Panda Trj/SporaRansom.A
TrendMicro-HouseCall Ransom_CERBER.AUSTF
Rising Ransom.Genasom!8.293 (CLOUD)
Ikarus Trojan.Win32.Injector
Fortinet W32/Generic.AC.3C931A!tr
AVG Win32:Filecoder-W [Trj]
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Filecoder.HxQBB48A

How to remove Win32/Injector.DKRU 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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There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft2.

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/Injector.DKRU 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/Injector.DKRU 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/products/

About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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