Win32/Kryptik.EPWF

Written by Robert Bailey

What is Win32/Kryptik.EPWF infection?

In this short article you will certainly locate regarding the meaning of Win32/Kryptik.EPWF as well as its unfavorable impact on your computer system. Such ransomware are a kind of malware that is clarified by on-line fraudulences to require paying the ransom by a victim.

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Most of the instances, Win32/Kryptik.EPWF infection will instruct its victims to launch funds transfer for the function of counteracting the amendments that the Trojan infection has introduced to the target’s gadget.

Win32/Kryptik.EPWF 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);
  • Compression (or decompression);
  • 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.;
  • 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.
  • Uses Windows utilities for basic functionality;
  • Executed a process and injected code into it, probably while unpacking;
  • Attempts to remove evidence of file being downloaded from the Internet;
  • Deletes its original binary from disk;
  • Attempts to delete volume shadow copies;
  • Exhibits behavior characteristic of Alphacrypt/Teslacrypt ransomware;
  • 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!
  • 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 identify installed AV products by registry key;
  • 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 target’s hard disk drive — so the sufferer can no more utilize the data;
  • 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/Kryptik.EPWF

One of the most common channels where Win32/Kryptik.EPWF Ransomware are injected are:

  • By means of phishing emails;
  • As a consequence of user winding up on a source that holds a destructive software;

As quickly as the Trojan is successfully infused, it will either cipher the information on the target’s computer or avoid the gadget from operating in a proper fashion – while also putting a ransom money note that discusses the requirement for the targets to effect the payment for the objective of decrypting the files or bring back the file system back to the preliminary condition. In many instances, the ransom note will certainly show up when the client reboots the COMPUTER after the system has actually currently been damaged.

Win32/Kryptik.EPWF circulation networks.

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

Ransomware injection

As an example:

    Faulty informs concerning unlicensed software program.

    In certain areas, the Trojans often wrongfully report having discovered some unlicensed applications made it possible for on the victim’s tool. The alert after that demands the customer to pay the ransom.

    Faulty declarations concerning unlawful web content.

    In countries where software application piracy is much less prominent, this technique is not as reliable for the cyber frauds. Conversely, the Win32/Kryptik.EPWF popup alert might incorrectly assert to be deriving from a law enforcement institution and also will report having situated youngster porn or other illegal data on the gadget.

    Win32/Kryptik.EPWF popup alert may falsely declare to be obtaining from a legislation enforcement organization and also will certainly report having situated kid porn or other prohibited data on the tool. The alert will in a similar way include a demand for the individual to pay the ransom money.

Technical details

File Info:

crc32: E534CF6E
md5: fd71b2ab86a8a61b5858d6a679858981
name: FD71B2AB86A8A61B5858D6A679858981.mlw
sha1: a5348c3be345c7e6aded1e8ca0ac40ccbea740aa
sha256: e205740fa94f1276acdae6cc5e6f3dc2475964e66bdf41aaffe3e0914c4bd9c4
sha512: d64a3ce24370683dda9e400250f0a0dc48fb7d595cc39e01555b71208b322ea6572381b8f78bdc055cc06dc74eedd4c64d85c97bbed10176637c8f84ed8eadb5
ssdeep: 6144:CtbVSVQaDALkB/Gvdjq0EoszY3jf4eUkbVOra+ghCFi1YYjj6eCthHDqsaKefu9y:FQPLeSu4jQeUqJhCgaYq/hHDbrU
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (C) 2017
InternalName: Crosswind
FileVersion: 0.73.240.114
CompanyName: ScanSoft-Recognita Corp.
SpecialBuild: 0.250.89.197
LegalTrademarks: Worser
Comments: Counterpoints
ProductName: Anticipating Bumpers
ProductVersion: 0.152.142.235
FileDescription: Absoluteness Assembling Dapples
OriginalFilename: Bunglel.EXE

Win32/Kryptik.EPWF also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 0055e3991 )
Elastic malicious (high confidence)
DrWeb Trojan.AVKill.60252
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.Teslacrypt.OL4
ALYac Trojan.Ransom.TeslaCrypt
Cylance Unsafe
Zillya Trojan.CryptGen.Win32.1
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
K7GW Trojan ( 0055e3991 )
Cybereason malicious.b86a8a
Symantec Ransom.TeslaCrypt
ESET-NOD32 a variant of Win32/Kryptik.EPWF
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Trojan.Agent-1386157
Kaspersky Trojan-Ransom.Win32.Bitman.nhn
BitDefender Gen:Variant.Ransom.TorrentLocker.1
NANO-Antivirus Trojan.Win32.AVKill.eaumyw
ViRobot Trojan.Win32.TeslaCrypt.Gen.D
SUPERAntiSpyware Trojan.Agent/Gen-Dropper
MicroWorld-eScan Gen:Variant.Ransom.TorrentLocker.1
Tencent Malware.Win32.Gencirc.10bf91f0
Ad-Aware Gen:Variant.Ransom.TorrentLocker.1
Sophos ML/PE-A + Mal/Ransom-EG
Comodo Malware@#2ypt6gjdqlbi3
F-Secure Heuristic.HEUR/AGEN.1113545
BitDefenderTheta Gen:NN.ZexaF.34684.Aq3@aWG8OFdO
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_CRYPTESLA.SMJ7
McAfee-GW-Edition Ransomware-FFR!FD71B2AB86A8
FireEye Generic.mg.fd71b2ab86a8a61b
Emsisoft Gen:Variant.Ransom.TorrentLocker.1 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Bitman.on
Webroot W32.Trojan.Gen
Avira HEUR/AGEN.1113545
eGambit Unsafe.AI_Score_100%
Microsoft Ransom:Win32/Tescrypt.H
AegisLab Hacktool.Win32.Tpyn.x!c
ZoneAlarm Trojan-Ransom.Win32.Bitman.nhn
GData Gen:Variant.Ransom.TorrentLocker.1
AhnLab-V3 Trojan/Win32.Teslacrypt.R175569
McAfee Ransomware-FFR!FD71B2AB86A8
MAX malware (ai score=85)
VBA32 BScope.Trojan.AVKill
Panda Trj/Genetic.gen
TrendMicro-HouseCall Ransom_CRYPTESLA.SMJ7
Rising Ransom.Tescrypt!8.3AF (CLOUD)
Yandex Trojan.Bitman!ZD0rhC4vya8
Ikarus Trojan.Win32.Injector
Fortinet W32/TeslaCrypt.I!tr
AVG Win32:Malware-gen
Paloalto generic.ml

How to remove Win32/Kryptik.EPWF virus?

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.EPWF 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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Win32/Kryptik.EPWF 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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