Win32/Kryptik.DOCR

What is Win32/Kryptik.DOCR infection?

In this article you will discover regarding the definition of Win32/Kryptik.DOCR and also its adverse influence on your computer. Such ransomware are a form of malware that is clarified by on the internet fraudulences to require paying the ransom by a target.

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Most of the instances, Win32/Kryptik.DOCR infection will certainly advise its targets to initiate funds move for the objective of reducing the effects of the changes that the Trojan infection has actually introduced to the sufferer’s device.

Win32/Kryptik.DOCR 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.
  • Starts servers listening on 0.0.0.0:0;
  • 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;
  • 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.
  • 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;
  • 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 copy of itself;
  • Creates a slightly modified copy of itself;
  • Ciphering the files situated on the victim’s hard disk — so the target can no longer make use of the information;
  • Preventing regular 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/Kryptik.DOCR

One of the most common networks whereby Win32/Kryptik.DOCR Ransomware Trojans are infused are:

  • By ways of phishing e-mails;
  • As a consequence of customer winding up on a resource that organizes a destructive software program;

As quickly as the Trojan is efficiently injected, it will certainly either cipher the information on the victim’s PC or stop the tool from operating in an appropriate fashion – while additionally positioning a ransom money note that discusses the demand for the sufferers to effect the settlement for the function of decrypting the records or recovering the file system back to the initial problem. In most instances, the ransom money note will certainly show up when the client reboots the COMPUTER after the system has actually currently been damaged.

Win32/Kryptik.DOCR circulation channels.

In different corners of the world, Win32/Kryptik.DOCR expands by leaps as well as bounds. Nevertheless, the ransom money notes and also methods of extorting the ransom money amount might differ depending on certain regional (local) setups. The ransom money notes as well as techniques of obtaining the ransom amount may differ depending on certain regional (local) settings.

Ransomware injection

As an example:

    Faulty alerts about unlicensed software.

    In certain locations, the Trojans commonly wrongfully report having actually discovered some unlicensed applications allowed on the target’s tool. The alert then requires the individual to pay the ransom.

    Faulty statements regarding unlawful content.

    In countries where software piracy is less prominent, this method is not as effective for the cyber frauds. Additionally, the Win32/Kryptik.DOCR popup alert might falsely declare to be stemming from a police institution as well as will certainly report having located youngster pornography or various other illegal data on the gadget.

    Win32/Kryptik.DOCR popup alert might wrongly declare to be acquiring from a law enforcement institution as well as will report having situated child pornography or various 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: DEED5512
md5: ad814fe6008fe0e6dc2e3c54d8358310
name: AD814FE6008FE0E6DC2E3C54D8358310.mlw
sha1: 79023e6aa601951d81295d7018e71c8a9d2c93ee
sha256: 8f776a8c7b13b2e605966c7a022ba21a959be39c97cb1f8d6117711638ea5621
sha512: 91734a67a41a4bdea681f9ab906016dec0ca0f8c4da7edede6c7542f9cfe3119495d5b0ba4dd0acebcaf0d72d444d23939f850d70433811bd80eba87b47b4c8f
ssdeep: 6144:1UZC6X+0TDrobXtE1sI6ORSR8sXcb9FtvfElPHfzcyKewfysHJ5swd+oyOMy4cyc:1UZC6X+0TDrobXtusI6ORSmsXcb/df0s
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright xa9Simple Kind 2000 - 2014 KG and its Licensors
CompanyName: Simple Kind
PrivateBuild: 7.3.7.6
Comments: Karel Doesnint Entreks
ProductName: Declines Serviceability
ProductVersion: 7.3.7.6
FileDescription: Karel Doesnint Entreks
Translation: 0x0409 0x04b0

Win32/Kryptik.DOCR also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 0056e92e1 )
Elastic malicious (high confidence)
Cynet Malicious (score: 100)
ALYac Trojan.GenericKD.12612522
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Foreign.b8c5ab7a
K7GW Trojan ( 0056e92e1 )
Cybereason malicious.6008fe
ESET-NOD32 a variant of Win32/Kryptik.DOCR
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan-Ransom.Win32.Foreign.nqzn
BitDefender Trojan.GenericKD.12612522
NANO-Antivirus Trojan.Win32.Kryptik.evfbru
MicroWorld-eScan Trojan.GenericKD.12612522
Tencent Win32.Trojan.Foreign.Lpkz
Ad-Aware Trojan.GenericKD.12612522
Sophos Mal/Generic-S
Comodo Malware@#1ggm73oclkf3u
BitDefenderTheta Gen:NN.ZexaF.34608.xq0@aKRL39oi
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_HPLOCKY.SME
McAfee-GW-Edition BehavesLike.Win32.Ursnif.fc
FireEye Generic.mg.ad814fe6008fe0e6
Emsisoft Trojan.GenericKD.12612522 (B)
SentinelOne Static AI – Malicious PE
Avira HEUR/AGEN.1110226
eGambit Unsafe.AI_Score_99%
Microsoft TrojanSpy:Win32/Ursnif
AegisLab Trojan.Win32.Generic.4!c
GData Trojan.GenericKD.12612522
McAfee Artemis!AD814FE6008F
VBA32 BScope.TrojanRansom.Encoder
Panda Trj/CI.A
TrendMicro-HouseCall Ransom_HPLOCKY.SME
Rising Ransom.Foreign!8.292 (CLOUD)
Ikarus Trojan-Ransom.Crysis
Fortinet W32/Agent.B!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Trojan.Foreign.HgIASOcA

How to remove Win32/Kryptik.DOCR 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/Kryptik.DOCR 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/Kryptik.DOCR 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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