MSIL/Kryptik.PFS

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

What is MSIL/Kryptik.PFS infection?

In this short article you will certainly find about the meaning of MSIL/Kryptik.PFS and also its adverse influence on your computer system. Such ransomware are a type of malware that is elaborated by on-line fraudulences to require paying the ransom by a sufferer.

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In the majority of the situations, MSIL/Kryptik.PFS infection will advise its sufferers to initiate funds move for the purpose of counteracting the modifications that the Trojan infection has actually presented to the sufferer’s device.

MSIL/Kryptik.PFS 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.
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • 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.
  • A process attempted to delay the analysis task.;
  • At least one IP Address, Domain, or File Name was found in a crypto call;
  • 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;
  • 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 remove evidence of file being downloaded from the Internet;
  • Executed a process and injected code into it, probably while unpacking;
  • 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
  • Exhibits behavior characteristic of Nanocore RAT;
  • 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.
  • Creates a copy of itself;
  • 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 situated on the target’s disk drive — so the victim can no longer use the data;
  • 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.

MSIL/Kryptik.PFS

One of the most regular networks whereby MSIL/Kryptik.PFS Ransomware Trojans are injected are:

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

As quickly as the Trojan is effectively injected, it will either cipher the data on the target’s PC or protect against the gadget from operating in an appropriate manner – while additionally placing a ransom money note that mentions the demand for the targets to effect the payment for the objective of decrypting the files or bring back the file system back to the preliminary problem. In the majority of instances, the ransom money note will show up when the customer restarts the PC after the system has already been harmed.

MSIL/Kryptik.PFS circulation channels.

In different corners of the globe, MSIL/Kryptik.PFS expands by leaps as well as bounds. Nonetheless, the ransom notes as well as techniques of extorting the ransom quantity might vary relying on certain regional (local) setups. The ransom notes and techniques of extorting the ransom money quantity may vary depending on particular neighborhood (regional) setups.

Ransomware injection

As an example:

    Faulty signals regarding unlicensed software.

    In specific areas, the Trojans typically wrongfully report having spotted some unlicensed applications allowed on the target’s tool. The sharp after that requires the individual to pay the ransom.

    Faulty statements about prohibited content.

    In countries where software application piracy is less preferred, this approach is not as reliable for the cyber fraudulences. Conversely, the MSIL/Kryptik.PFS popup alert might incorrectly claim to be originating from a police organization and will report having situated child porn or other unlawful information on the gadget.

    MSIL/Kryptik.PFS popup alert might wrongly declare to be deriving from a regulation enforcement establishment and will report having situated child porn or other prohibited data on the device. The alert will in a similar way contain a requirement for the user to pay the ransom money.

Technical details

File Info:

crc32: DF0A3DBF
md5: 85dbc84a5132c1828138a35e70d51a2e
name: 85DBC84A5132C1828138A35E70D51A2E.mlw
sha1: 788afc0c90ec025d06b127c5384a3056d2f54c34
sha256: 7c1b3a5b7ac5debc86cff62ecd20123221c37f9fd71951d8cc0941f68db2d1ea
sha512: 0ac4071bd3d57ca8a1576305cd93224e87e7908ac4963e50bc9b12de90f7cdeb433da05e440c2707eccd8efd095c9c54c24c8aaf28a3647a35b94eea8e799588
ssdeep: 6144:CFqDRmj/fGZq2dLuIF6ON1k7JI5SjAQ0I0fj3oc52RDhobVhuAW/Cf3:+qD47fOq2HcON1kazJ3jah240v
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: Copyright PerfMon2 2018
Assembly Version: 1.0.0.0
InternalName: PerfMon2.exe
FileVersion: 1.0.0.0
CompanyName:
LegalTrademarks:
Comments:
ProductName: PerfMon2
ProductVersion: 1.0.0.0
FileDescription: PerfMon2
OriginalFilename: PerfMon2.exe

MSIL/Kryptik.PFS also known as:

GridinSoftTrojan.Ransom.Gen
K7AntiVirusTrojan ( 0053a8191 )
Elasticmalicious (high confidence)
DrWebBackDoor.Tordev.976
CynetMalicious (score: 100)
ALYacGen:Variant.MSILPerseus.162729
CylanceUnsafe
ZillyaTrojan.Generic.Win32.173315
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_90% (D)
AlibabaTrojan:Win32/Starter.ali2000005
K7GWTrojan ( 0053a8191 )
Cybereasonmalicious.a5132c
CyrenW32/Trojan.FWW.gen!Eldorado
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of MSIL/Kryptik.PFS
APEXMalicious
AvastWin32:MalwareX-gen [Trj]
KasperskyHEUR:Trojan-Ransom.MSIL.Blocker.gen
BitDefenderGen:Variant.MSILPerseus.162729
NANO-AntivirusTrojan.Win32.Tordev.fitolz
MicroWorld-eScanGen:Variant.MSILPerseus.162729
TencentMsil.Trojan.Blocker.Eckp
Ad-AwareGen:Variant.MSILPerseus.162729
SophosMal/Generic-S
BitDefenderThetaGen:NN.ZemsilF.34608.Dm0@aaTXO!h
McAfee-GW-EditionBehavesLike.Win32.Generic.gc
FireEyeGeneric.mg.85dbc84a5132c182
EmsisoftGen:Variant.MSILPerseus.162729 (B)
SentinelOneStatic AI – Malicious PE
AviraTR/Dropper.MSIL.Gen
eGambitUnsafe.AI_Score_100%
MicrosoftTrojan:Win32/Occamy.C
ArcabitTrojan.MSILPerseus.D27BA9
AegisLabTrojan.MSIL.Blocker.4!c
GDataGen:Variant.MSILPerseus.162729
AhnLab-V3Trojan/Win32.Pynamer.C2760123
McAfeeGenericRXGK-CW!85DBC84A5132
MAXmalware (ai score=100)
VBA32Backdoor.Tordev
MalwarebytesSpyware.PasswordStealer
PandaTrj/GdSda.A
RisingRansom.Blocker!8.12A (CLOUD)
YandexTrojan.Kryptik!lfCnCCG+wWc
IkarusTrojan.MSIL.Crypt
MaxSecureTrojan.Malware.300983.susgen
FortinetMSIL/Generic.AP.1383AB4!tr
AVGWin32:MalwareX-gen [Trj]
Paloaltogeneric.ml
Qihoo-360Win32/Ransom.Blocker.HwMAEpsA

How to remove MSIL/Kryptik.PFS 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 MSIL/Kryptik.PFS 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 MSIL/Kryptik.PFS 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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