Win32/Kryptik.FRSH

Written by Robert Bailey

What is Win32/Kryptik.FRSH infection?

In this article you will locate concerning the definition of Win32/Kryptik.FRSH and also its adverse impact on your computer system. Such ransomware are a kind of malware that is elaborated by on-line fraudulences to require paying the ransom money by a sufferer.

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Most of the cases, Win32/Kryptik.FRSH infection will advise its targets to initiate funds transfer for the purpose of counteracting the modifications that the Trojan infection has introduced to the target’s device.

Win32/Kryptik.FRSH 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 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.
  • Mimics the system’s user agent string for its own requests;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • 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.

  • 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;
  • Detects Sandboxie through the presence of a library;
  • Detects the presence of Wine emulator via function name;
  • Deletes its original binary from disk;
  • Tries to unhook or modify Windows functions monitored by Cuckoo;
  • Network activity contains more than one unique useragent.;
  • 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
  • Attempts to identify installed analysis tools by a known file location;
  • Checks for the presence of known devices from debuggers and forensic tools;
  • Detects the presence of Wine emulator via registry key;
  • Detects Sandboxie using a known mutex;
  • Checks the version of Bios, possibly for anti-virtualization;
  • Detects VirtualBox through the presence of a device;
  • Detects VirtualBox through the presence of a registry key;
  • Detects VMware through the presence of a device;
  • Detects VMware through the presence of a registry key;
  • Detects Virtual PC using a known mutex;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Creates a copy of itself;
  • Checks for a known DeepFreeze Frozen State Mutex;
  • Collects information to fingerprint the system. There are behavioral human characteristics that can be used to digitally identify a person to grant access to systems, devices, or data. Unlike passwords and verification codes, fingerprints are fundamental parts of user’s identities. Among the threats blocked on biometric data processing and storage systems is spyware, the malware used in phishing attacks (mostly spyware downloaders and droppers), ransomware, and Banking Trojans as posing the greatest danger.
  • Ciphering the records situated on the target’s hard disk drive — so the victim can no more make use of the information;
  • Preventing normal access to the sufferer’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.
Similar behavior
Related domains
turbolistjo.info Gen:Variant.Ransom.2003
superalfados122.info Gen:Variant.Ransom.2003

Win32/Kryptik.FRSH

The most common networks whereby Win32/Kryptik.FRSH Ransomware are injected are:

  • By ways of phishing emails;
  • As an effect of user ending up on a resource that holds a harmful software program;

As quickly as the Trojan is successfully infused, it will either cipher the data on the sufferer’s computer or protect against the tool from functioning in an appropriate way – while additionally placing a ransom note that states the need for the sufferers to effect the payment for the function of decrypting the records or recovering the file system back to the initial problem. In most instances, the ransom note will come up when the customer restarts the COMPUTER after the system has actually already been damaged.

Win32/Kryptik.FRSH distribution networks.

In numerous edges of the globe, Win32/Kryptik.FRSH expands by jumps and also bounds. Nonetheless, the ransom notes as well as tricks of extorting the ransom amount may vary depending on specific neighborhood (local) setups. The ransom notes and techniques of extorting the ransom money amount may vary depending on specific local (regional) setups.

Ransomware injection

As an example:

    Faulty alerts regarding unlicensed software program.

    In specific areas, the Trojans frequently wrongfully report having identified some unlicensed applications enabled on the sufferer’s device. The sharp after that demands the customer to pay the ransom money.

    Faulty statements concerning unlawful web content.

    In countries where software application piracy is less preferred, this approach is not as effective for the cyber fraudulences. Additionally, the Win32/Kryptik.FRSH popup alert may wrongly assert to be stemming from a police establishment and also will certainly report having located kid porn or other unlawful data on the device.

    Win32/Kryptik.FRSH popup alert might wrongly declare to be deriving from a legislation enforcement institution and also will report having located youngster porn or various other prohibited information on the gadget. The alert will in a similar way include a need for the individual to pay the ransom money.

Technical details

File Info:

crc32: F635B797
md5: 1dab548b109948aa9ba71e915c9a71cd
name: 1DAB548B109948AA9BA71E915C9A71CD.mlw
sha1: 8172c431440504e4c2c1c47eb604aa51eed24a55
sha256: 0f57b8c6dad7ad3cb182959454d97ab058878727854db11cdf182342a824a4e7
sha512: 2547d54be56c791c837deeb9246393e4871655d43c4913a81dd13965170ea30e08d8a1fc13dfcffe2fca7b06e5d570a43b31a7824a033289a8efa0d65e366881
ssdeep: 3072:CrHe6VhTaP0qnM7O4mYEBlcb+2eAcoBN71tlASudNMbkSdSbwXA4vO+gxXzjLMCr:Cr+6/Te0qnrYEEb+2/cQfA5Na7gww4E
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.FRSH also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
DrWeb Trojan.PWS.Panda.11620
Cynet Malicious (score: 100)
ALYac Gen:Variant.Ransom.2003
Cylance Unsafe
Zillya Trojan.Khalesi.Win32.1162
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Cybereason malicious.b10994
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Kryptik.FRSH
APEX Malicious
Avast Win32:Rootkit-gen [Rtk]
Kaspersky Trojan.Win32.Khalesi.dux
BitDefender Gen:Variant.Ransom.2003
NANO-Antivirus Trojan.Win32.Khalesi.fahnun
MicroWorld-eScan Gen:Variant.Ransom.2003
Tencent Win32.Trojan.Khalesi.Ebrn
Ad-Aware Gen:Variant.Ransom.2003
Sophos Mal/Generic-S
Comodo Malware@#110ic9jatok4f
BitDefenderTheta Gen:NN.ZexaF.34688.rqW@ai4uOKai
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Dropper.dc
FireEye Generic.mg.1dab548b109948aa
Emsisoft Gen:Variant.Ransom.2003 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Khalesi.aep
Webroot Trojan.Dropper.Gen
Avira HEUR/AGEN.1104894
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Trojan:Win32/Tiggre!rfn
AegisLab Trojan.Win32.Generic.4!c
GData Gen:Variant.Ransom.2003
AhnLab-V3 Win-Trojan/Sagecrypt.Gen
Acronis suspicious
McAfee Artemis!1DAB548B1099
MAX malware (ai score=97)
VBA32 BScope.TrojanRansom.Foreign
Malwarebytes MachineLearning/Anomalous.100%
Panda Trj/CI.A
Rising Trojan.Kryptik!8.8 (CLOUD)
Yandex Trojan.Khalesi!0tE4rXPu4mo
Ikarus Trojan.Win32.Crypt
Fortinet W32/Khalesi.DUX!tr
AVG Win32:Rootkit-gen [Rtk]
Paloalto generic.ml

How to remove Win32/Kryptik.FRSH 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.FRSH 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.FRSH 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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