Win32/Kryptik.FMFB

What is Win32/Kryptik.FMFB infection?

In this article you will find concerning the definition of Win32/Kryptik.FMFB and its negative impact on your computer. Such ransomware are a type of malware that is specified by on the internet fraudulences to require paying the ransom by a target.

In the majority of the situations, Win32/Kryptik.FMFB ransomware will certainly instruct its victims to start funds move for the function of reducing the effects of the amendments that the Trojan infection has introduced to the sufferer’s device.

Win32/Kryptik.FMFB Summary

These alterations can be as adheres to:

  • 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 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.
  • 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.
  • 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;
  • Sniffs keystrokes;
  • Queries information on disks for anti-virtualization via Device Information APIs;
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • A system process is generating network traffic likely as a result of process injection;
  • 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 modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Creates a copy of itself;
  • Harvests information related to installed mail clients;
  • Creates a slightly modified copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers found on the sufferer’s disk drive — so the victim can no longer make use of the data;
  • Preventing routine accessibility 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.FMFB

One of the most regular networks through which Win32/Kryptik.FMFB Trojans are infused are:

  • By methods of phishing emails;
  • As a consequence of user winding up on a resource that organizes a malicious software program;

As soon as the Trojan is efficiently infused, it will certainly either cipher the data on the sufferer’s computer or protect against the tool from functioning in a proper way – while likewise placing a ransom note that discusses the demand for the targets to effect the settlement for the purpose of decrypting the documents or bring back the data system back to the initial condition. In the majority of circumstances, the ransom note will certainly show up when the customer reboots the COMPUTER after the system has currently been harmed.

Win32/Kryptik.FMFB distribution channels.

In various corners of the globe, Win32/Kryptik.FMFB expands by jumps and bounds. Nevertheless, the ransom notes and also methods of obtaining the ransom money quantity might differ depending on specific local (regional) setups. The ransom money notes and techniques of obtaining the ransom quantity may vary depending on particular local (regional) settings.

Ransomware injection

For instance:

    Faulty alerts regarding unlicensed software application.

    In particular locations, the Trojans typically wrongfully report having identified some unlicensed applications allowed on the victim’s tool. The sharp then requires the individual to pay the ransom.

    Faulty statements regarding illegal material.

    In countries where software program piracy is much less popular, this approach is not as effective for the cyber frauds. Conversely, the Win32/Kryptik.FMFB popup alert might wrongly claim to be deriving from a law enforcement institution and also will certainly report having located child pornography or other illegal data on the device.

    Win32/Kryptik.FMFB popup alert might falsely declare to be obtaining from a legislation enforcement institution and will report having located youngster pornography or other prohibited information on the tool. The alert will similarly consist of a need for the individual to pay the ransom money.

Technical details

File Info:

crc32: E54A1E95md5: 2c742c51729f0dd15f4a7eb0d530ff47name: 2C742C51729F0DD15F4A7EB0D530FF47.mlwsha1: b229be603a084a615962fd91c45fdd4d2d032429sha256: 056b8217bb41866d35830da507e53590089cdd100962c5d365522abd707ce296sha512: fda54dbc4aef5007730a2cd15e526b5bd71c9501fc950f8b91a81933f5f4b557fbb8b503cc99d2827652698c02d467fab5bd393fc7db6cb1bf7e9dd67869f468ssdeep: 6144:BcfspKIXfYkfO0kQ93K71LVXvRDNsEe6Ubfvo0RJCReVRp:5QIXATQlKzE1vo0/Cgbptype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.FMFB also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 005016421 )
Elastic malicious (high confidence)
DrWeb Trojan.PWS.Sphinx.2
Cynet Malicious (score: 100)
ALYac Gen:Variant.Ransom.Cerber.87
Cylance Unsafe
Zillya Trojan.Kryptik.Win32.1030689
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba TrojanSpy:Win32/Ursnif.1b51ccbd
K7GW Trojan ( 005016421 )
Cybereason malicious.1729f0
Cyren W32/S-2d73e857!Eldorado
Symantec Packed.Generic.493
ESET-NOD32 a variant of Win32/Kryptik.FMFB
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Malware.Zusy-9821645-0
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Ransom.Cerber.87
NANO-Antivirus Trojan.Win32.Kryptik.elwoxx
MicroWorld-eScan Gen:Variant.Ransom.Cerber.87
Tencent Malware.Win32.Gencirc.10bcf392
Ad-Aware Gen:Variant.Ransom.Cerber.87
Sophos Mal/Generic-S + Mal/Elenoocka-F
Comodo TrojWare.Win32.Crypt.C@7vajd0
VIPRE VirTool.Win32.Obfuscator.da!j (v)
TrendMicro Ransom_CERBER.SM37
McAfee-GW-Edition BehavesLike.Win32.Ransomware.fc
FireEye Generic.mg.2c742c51729f0dd1
Emsisoft Gen:Variant.Ransom.Cerber.87 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Foreign.bwx
Avira HEUR/AGEN.1116789
eGambit Unsafe.AI_Score_97%
Microsoft TrojanSpy:Win32/Ursnif.HX
Arcabit Trojan.Ransom.Cerber.87
GData Gen:Variant.Ransom.Cerber.87
AhnLab-V3 Trojan/Win32.Locky.C1724524
Acronis suspicious
McAfee Ransomware-GFM!2C742C51729F
MAX malware (ai score=83)
VBA32 BScope.TrojanPSW.Sphinx
Malwarebytes Trojan.Agent
Panda Trj/GdSda.A
TrendMicro-HouseCall Ransom_CERBER.SM37
Rising Ransom.Cerber!8.3058 (CLOUD)
Yandex Trojan.GenAsa!4w4djCXSk28
Ikarus Trojan-Spy.Sharik
Fortinet W32/GenKryptik.APXF!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Trojan.Generic.HxQBBW8A

How to remove Win32/Kryptik.FMFB ransomware?

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

Run the setup file.

Run Setup.exe
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 Scanning

Click on “Clean Now”.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

Full version of GridinSoft

If the guide doesn’t help you to remove Win32/Kryptik.FMFB you can always ask me in the comments for getting help.

References

    About the author

    Robert Bailey

    Security engineer focused on malware behavior, removal workflows, and Windows hardening. Robert reviews threat articles for practical accuracy, checking detection names, symptoms, and cleanup steps before publication.

    Leave a Comment