Win32/Kryptik.FRJG

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is Win32/Kryptik.FRJG infection?

In this post you will certainly locate concerning the meaning of Win32/Kryptik.FRJG as well as its negative influence on your computer. Such ransomware are a type of malware that is clarified by on-line scams to require paying the ransom by a target.

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In the majority of the cases, Win32/Kryptik.FRJG ransomware will advise its sufferers to launch funds transfer for the function of neutralizing the changes that the Trojan infection has actually presented to the target’s gadget.

Win32/Kryptik.FRJG Summary

These adjustments can be as complies with:

  • 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.

  • 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.
  • Creates an excessive number of UDP connection attempts to external IP addresses;
  • 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 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.
  • EternalBlue behavior. Allows cyber threat actors to remotely execute arbitrary code and gain access to a network by sending specially crafted packets.

    This is has made EternalBlue trick popular with various malware, such as Trickbot, a modular banking trojan, as well as CoinMiner and WannaMine, crypto miners that use the EternalBlue exploit in order to gain access to computing power to mine cryptocurrencies.

  • Creates a copy of itself;
  • Generates some ICMP traffic;
  • 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 files found on the target’s hard drive — so the target can no longer utilize 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
mbfce24rgn65bx3g.qlkrwn.comTrojan-Ransom.Win32.SageCrypt.dis
mbfce24rgn65bx3g.xcvkjet.netTrojan-Ransom.Win32.SageCrypt.dis

Win32/Kryptik.FRJG

One of the most normal networks whereby Win32/Kryptik.FRJG are injected are:

  • By means of phishing emails;
  • As a repercussion of individual ending up on a source that hosts a malicious software program;

As quickly as the Trojan is effectively injected, it will certainly either cipher the data on the target’s PC or protect against the device from working in a correct fashion – while likewise putting a ransom note that discusses the need for the sufferers to impact the payment for the purpose of decrypting the papers or bring back the file system back to the preliminary problem. In many circumstances, the ransom note will certainly turn up when the client reboots the COMPUTER after the system has actually currently been harmed.

Win32/Kryptik.FRJG circulation networks.

In numerous corners of the world, Win32/Kryptik.FRJG grows by jumps and also bounds. Nonetheless, the ransom money notes as well as techniques of extorting the ransom amount might differ depending upon certain neighborhood (regional) settings. The ransom money notes and techniques of obtaining the ransom quantity may vary depending on certain regional (local) setups.

Ransomware injection

For instance:

    Faulty notifies regarding unlicensed software application.

    In specific areas, the Trojans often wrongfully report having identified some unlicensed applications enabled on the target’s gadget. The alert then requires the individual to pay the ransom.

    Faulty declarations concerning prohibited material.

    In nations where software piracy is much less prominent, this method is not as efficient for the cyber frauds. Conversely, the Win32/Kryptik.FRJG popup alert may wrongly claim to be originating from a law enforcement institution and will certainly report having located kid pornography or various other prohibited data on the tool.

    Win32/Kryptik.FRJG popup alert may wrongly declare to be acquiring from a law enforcement establishment and will report having located youngster pornography or various other prohibited information on the gadget. The alert will likewise include a demand for the individual to pay the ransom money.

Technical details

File Info:

crc32: 9936AD3C
md5: 4b77629ce08bbc175faceb45abe68a45
name: upload_file
sha1: 8d2e45397806e5b4e20bf9f0cf80eeffdbc9af1d
sha256: 47e9841c99f3e198a715263f76861e997d807a085ce69c6288bfe97227242ed9
sha512: 8c8e410bb918d4a124b5f39ba5df7aedc98207f3c50851d35f6d0a611ebd2c29fc9372d58e59d99ed5d65db28d28391f38a44d42e4eccea23d6563e94bda0dbb
ssdeep: 12288:Y+ICVKQd/C67aiHRE/FgbfRVBHKmA/hsyL98/Z9cZ:z6g/fRE/FUxHKmwJa4
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (c) 2014 - . All rights reserved. Benchmark Capital
InternalName: ClickEstimate
CompanyName: Benchmark Capital
LegalTrademarks: Copyright (c) 2014 - . All rights reserved. Benchmark Capital
ProductName: ClickEstimate
ProductVersion: 9.2.37.3
FileDescription: Services Incursion Lgs
OriginalFilename: ClickEstimate.exe
Translation: 0x0409 0x04b0

Win32/Kryptik.FRJG also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetectVM.malware2
MicroWorld-eScanTrojan.GenericKD.34250028
FireEyeGeneric.mg.4b77629ce08bbc17
McAfeeArtemis!4B77629CE08B
CylanceUnsafe
VIPRETrojan.Win32.Generic!BT
AegisLabTrojan.Win32.SageCrypt.j!c
CrowdStrikewin/malicious_confidence_90% (W)
BitDefenderTrojan.GenericKD.34250028
K7GWTrojan ( 0050bcf41 )
K7AntiVirusTrojan ( 0050bcf41 )
SymantecML.Attribute.HighConfidence
APEXMalicious
AvastWin32:Malware-gen
GDataTrojan.GenericKD.34250028
KasperskyTrojan-Ransom.Win32.SageCrypt.dis
AlibabaRansom:Win32/SageCrypt.a3fee225
ViRobotTrojan.Win32.Z.Sagecrypt.471040
TencentWin32.Trojan.Sagecrypt.Pepz
EmsisoftTrojan.GenericKD.34250028 (B)
F-SecureHeuristic.HEUR/AGEN.1105973
DrWebTrojan.Encoder.10894
ZillyaTrojan.SageCrypt.Win32.228
TrendMicroMal_MiliCry-1c
Trapminemalicious.moderate.ml.score
SophosMal/Generic-S
SentinelOneDFI – Suspicious PE
JiangminTrojan.SageCrypt.pw
AviraHEUR/AGEN.1105973
eGambitUnsafe.AI_Score_97%
Antiy-AVLTrojan[Ransom]/Win32.SageCrypt
MicrosoftTrojan:Win32/Tiggre!rfn
ArcabitTrojan.Generic.D20A9D2C
ZoneAlarmTrojan-Ransom.Win32.SageCrypt.dis
CynetMalicious (score: 85)
AhnLab-V3Win-Trojan/Sagecrypt.Gen
VBA32Hoax.SageCrypt
ALYacTrojan.GenericKD.34250028
MAXmalware (ai score=83)
Ad-AwareTrojan.GenericKD.34250028
PandaTrj/CI.A
ESET-NOD32a variant of Win32/Kryptik.FRJG
TrendMicro-HouseCallMal_MiliCry-1c
RisingRansom.SageCrypt!8.E42C (CLOUD)
YandexTrojan.SageCrypt!
IkarusTrojan.Win32.Crypt
FortinetW32/SageCrypt.DIS!tr
BitDefenderThetaGen:NN.ZexaF.34142.Cq0@aeI4orei
AVGWin32:Malware-gen
Qihoo-360Trojan.Generic

How to remove Win32/Kryptik.FRJG ransomware?

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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The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

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.FRJG 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.FRJG 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/comparison

About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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