Win32/Kryptik.HJWA

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

What is Win32/Kryptik.HJWA infection?

In this article you will locate regarding the meaning of Win32/Kryptik.HJWA and its negative impact on your computer. Such ransomware are a form of malware that is clarified by on-line fraudulences to demand paying the ransom money by a victim.

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In the majority of the instances, Win32/Kryptik.HJWA ransomware will certainly instruct its sufferers to initiate funds move for the purpose of neutralizing the changes that the Trojan infection has actually presented to the victim’s tool.

Win32/Kryptik.HJWA Summary

These modifications 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.
  • Possible date expiration check, exits too soon after checking local time;
  • A process attempted to delay the analysis task.;
  • 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.
  • Unconventionial binary language: Persian (Iran);
  • Unconventionial language used in binary resources: Tamil;
  • 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;
  • Steals private information from local Internet browsers;
  • 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
  • Writes a potential ransom message to disk;
  • Collects information about installed applications;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Creates a copy of itself;
  • Attempts to access Bitcoin/ALTCoin wallets;
  • Harvests credentials from local FTP client softwares;
  • Harvests information related to installed instant messenger clients;
  • Harvests information related to installed mail clients;
  • 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 drive — so the sufferer can no longer make use of the information;
  • Preventing regular 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.

Win32/Kryptik.HJWA

The most regular networks whereby Win32/Kryptik.HJWA Ransomware are injected 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 an effect of customer winding up on a source that hosts a destructive software program;

As quickly as the Trojan is successfully infused, it will certainly either cipher the information on the sufferer’s PC or stop the tool from working in a correct way – while likewise positioning a ransom note that mentions the demand for the targets to impact the payment for the purpose of decrypting the files or recovering the documents system back to the first condition. In a lot of instances, the ransom money note will turn up when the client reboots the PC after the system has already been damaged.

Win32/Kryptik.HJWA circulation channels.

In various edges of the globe, Win32/Kryptik.HJWA expands by leaps and also bounds. Nonetheless, the ransom money notes and also techniques of obtaining the ransom quantity might vary depending on particular local (regional) setups. The ransom notes and also techniques of extorting the ransom money amount might differ depending on certain neighborhood (regional) setups.

Ransomware injection

As an example:

    Faulty signals concerning unlicensed software.

    In certain locations, the Trojans typically wrongfully report having spotted some unlicensed applications enabled on the victim’s gadget. The alert after that demands the customer to pay the ransom.

    Faulty statements concerning prohibited material.

    In countries where software application piracy is less popular, this method is not as effective for the cyber scams. Conversely, the Win32/Kryptik.HJWA popup alert may wrongly declare to be deriving from a law enforcement organization as well as will report having located child pornography or various other prohibited information on the tool.

    Win32/Kryptik.HJWA popup alert might falsely claim to be acquiring from a regulation enforcement establishment and will certainly report having located youngster porn or various other unlawful information on the gadget. The alert will similarly contain a demand for the customer to pay the ransom money.

Technical details

File Info:

crc32: A9D1D6B3
md5: 648f0d37b65ec97fd1754d53d78a6a24
name: 648F0D37B65EC97FD1754D53D78A6A24.mlw
sha1: ba9c8a94d83f66f93523345aa7fe266cf9769a0e
sha256: 894efce31cc70924a097c89b02eb544cb1303268b569f39ccbfba492d6c2b166
sha512: e222e2ef11a00605575bc8431587f9e89dbd6c3579f43cd36c97527385c85e837f831a583ede7a4c3413f6c0c8ff2139c4b1e4821224c6e4f57eb5cd18fe8410
ssdeep: 24576:O4O1Sv8WQVG7MgvUE6Pi7GqKBPMWrnyMmzjPgIs:O4OzVg7MIAa1Ov6t
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

InternalName: calimarimodunador.exe
FileVersions: 7.0.1.53
LegalCopyrights: Vsekdar
ProductVersions: 67.0.21.45
Translation: 0x0429 0x04eb

Win32/Kryptik.HJWA also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
MicroWorld-eScanTrojan.GenericKD.36476973
McAfeePacked-GBF!648F0D37B65E
MalwarebytesMachineLearning/Anomalous.94%
SangforTrojan.Win32.Save.a
K7AntiVirusRiskware ( 0040eff71 )
BitDefenderTrojan.GenericKD.36476973
K7GWRiskware ( 0040eff71 )
SymantecML.Attribute.HighConfidence
APEXMalicious
Paloaltogeneric.ml
KasperskyHEUR:Exploit.Win32.Shellcode.gen
AlibabaRansom:Win32/generic.ali2000027
TencentWin32.Trojan.Raas.Auto
Ad-AwareTrojan.GenericKD.36476973
SophosMal/Generic-S
DrWebTrojan.DownLoader37.29599
McAfee-GW-EditionBehavesLike.Win32.Generic.cc
FireEyeGeneric.mg.648f0d37b65ec97f
EmsisoftTrojan.GenericKD.36476973 (B)
SentinelOneStatic AI – Malicious PE
eGambitUnsafe.AI_Score_99%
GridinsoftTrojan.Win32.Packed.oa
ArcabitTrojan.Generic.D22C982D
ZoneAlarmHEUR:Exploit.Win32.Shellcode.gen
GDataTrojan.GenericKD.36476973
CynetMalicious (score: 100)
ESET-NOD32a variant of Win32/Kryptik.HJWA
Acronissuspicious
MAXmalware (ai score=82)
CylanceUnsafe
RisingMalware.Heuristic!ET#91% (RDMK:cmRtazq0yCKR1RnwfxsXSqyGPf1X)
IkarusTrojan-Dropper.Agent
MaxSecureTrojan.Malware.300983.susgen
BitDefenderThetaGen:NN.ZexaF.34608.Zy0@aitM8!cG
AVGFileRepMalware
AvastFileRepMalware
CrowdStrikewin/malicious_confidence_100% (W)
Qihoo-360Win32/Trojan.Generic.HwoCyv8A

How to remove Win32/Kryptik.HJWA 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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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.HJWA 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.HJWA 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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