Win32/Kryptik.DTRV

What is Win32/Kryptik.DTRV infection?

In this article you will certainly find concerning the meaning of Win32/Kryptik.DTRV as well as its adverse impact on your computer system. Such ransomware are a kind of malware that is elaborated by on the internet fraudulences to demand paying the ransom by a victim.

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Most of the instances, Win32/Kryptik.DTRV infection will certainly instruct its victims to launch funds move for the purpose of counteracting the changes that the Trojan infection has presented to the target’s tool.

Win32/Kryptik.DTRV Summary

These modifications 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.
  • 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.

  • Attempts to delete volume shadow copies;
  • 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;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the papers found on the victim’s hard disk — so the sufferer can no more utilize the data;
  • Preventing routine accessibility 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.

Win32/Kryptik.DTRV

One of the most normal channels whereby Win32/Kryptik.DTRV are infused are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As a consequence of customer ending up on a resource that holds a destructive software application;

As quickly as the Trojan is efficiently infused, it will either cipher the data on the sufferer’s computer or avoid the tool from functioning in a correct way – while likewise placing a ransom note that points out the demand for the victims to effect the settlement for the objective of decrypting the papers or restoring the documents system back to the preliminary problem. In many instances, the ransom note will show up when the client reboots the COMPUTER after the system has already been damaged.

Win32/Kryptik.DTRV distribution channels.

In numerous edges of the globe, Win32/Kryptik.DTRV expands by leaps as well as bounds. Nevertheless, the ransom money notes and also tricks of extorting the ransom money amount might vary depending on specific neighborhood (regional) settings. The ransom money notes as well as tricks of extorting the ransom amount may differ depending on particular neighborhood (local) setups.

Ransomware injection

For instance:

    Faulty alerts regarding unlicensed software application.

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

    Faulty declarations concerning illegal material.

    In countries where software piracy is much less preferred, this approach is not as effective for the cyber scams. Alternatively, the Win32/Kryptik.DTRV popup alert might falsely assert to be deriving from a police institution as well as will certainly report having located kid pornography or other illegal information on the device.

    Win32/Kryptik.DTRV popup alert might incorrectly assert to be deriving from a legislation enforcement institution as well as will certainly report having situated child pornography or various other illegal information on the gadget. The alert will in a similar way include a requirement for the user to pay the ransom.

Technical details

File Info:

crc32: 6B4F809C
md5: 70f5ed63c92fea27f8f8e5c2413bf323
name: 70F5ED63C92FEA27F8F8E5C2413BF323.mlw
sha1: fa5e6fe928837e97c0c6735b5821d988b5b1eee8
sha256: 0c9194550fe425b6e2d9d87371aff4a3114b849ccca60b220fdd37e5d2b5be8d
sha512: cd1f5752dc95519bbfe5056484f59286d1941644194fc997a6f1390255b316eb70351101bb244cdd5effc70e60a7eb2f5e71b5a39ca30838023d841da398808a
ssdeep: 6144:q1zPTSeLzD0q11rYmnQKImrQQJxjSlp5yAueuJIkU:CntEk6mQerQE52umkU
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright xc2xa9DivX, LLC 2016 All rights reserved.
InternalName: CatfishAccuse
FileVersion: 2.3.3.9
CompanyName: DivX, LLC
PrivateBuild: 2.3.3.9
LegalTrademarks: Copyright xc2xa9DivX, LLC 2016 All rights reserved.
Comments: Wich Shape Coupler
ProductName: CatfishAccuse
ProductVersion: 2.3.3.9
FileDescription: Wich Shape Coupler
OriginalFilename: CatfishAccuse
Translation: 0x0409 0x04b0

Win32/Kryptik.DTRV also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 004cd4881 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.3953
Cynet Malicious (score: 100)
McAfee Artemis!70F5ED63C92F
Cylance Unsafe
Zillya Trojan.Crusis.Win32.803
Sangfor Ransom.Win32.Crusis.bwq
CrowdStrike win/malicious_confidence_80% (D)
Alibaba Ransom:Win32/Crusis.93daa1ca
K7GW Trojan ( 004cd4881 )
Cybereason malicious.3c92fe
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Kryptik.DTRV
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan-Ransom.Win32.Crusis.bwq
BitDefender Trojan.Ransom.GenericKD.12794638
NANO-Antivirus Trojan.Win32.Crusis.exqmvd
MicroWorld-eScan Trojan.Ransom.GenericKD.12794638
Tencent Win32.Trojan.Crusis.Aiif
Ad-Aware Trojan.Ransom.GenericKD.12794638
Sophos Mal/Generic-S
Comodo Malware@#3irn88xvo5wu1
BitDefenderTheta Gen:NN.ZexaF.34628.zy0@aaOezLdi
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Dropper.gh
FireEye Generic.mg.70f5ed63c92fea27
Emsisoft Trojan.Ransom.GenericKD.12794638 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.Crusis.tg
Webroot W32.Malware.Gen
Avira HEUR/AGEN.1129379
eGambit Unsafe.AI_Score_81%
Microsoft Trojan:Win32/Skeeyah.A!rfn
Arcabit Trojan.Ransom.Generic.DC33B0E
AegisLab Trojan.Win32.Crusis.j!c
GData Trojan.Ransom.GenericKD.12794638
TACHYON Ransom/W32.Crusis.413696
AhnLab-V3 Trojan/Win32.Crusis.C2375212
VBA32 TrojanRansom.Crusis
Malwarebytes Malware.Heuristic.1001
Panda Trj/CI.A
Rising Ransom.Crusis!8.5724 (CLOUD)
Ikarus Trojan.Win32.Crypt
Fortinet W32/Kryptik.DTRV!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Ransom.CrySiS.HgIASRAA

How to remove Win32/Kryptik.DTRV 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

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.DTRV 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.DTRV 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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