Sf:Critroni-B [Trj]

What is Sf:Critroni-B [Trj] infection?

In this short article you will certainly find concerning the definition of Sf:Critroni-B [Trj] and its adverse influence on your computer. Such ransomware are a type of malware that is elaborated by on-line fraudulences to demand paying the ransom money by a victim.

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Most of the situations, Sf:Critroni-B [Trj] virus will certainly advise its sufferers to initiate funds transfer for the purpose of reducing the effects of the changes that the Trojan infection has introduced to the victim’s gadget.

Sf:Critroni-B [Trj] Summary

These alterations 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);
  • 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.

  • Executed a process and injected code into it, probably while unpacking;
  • 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 documents located on the sufferer’s hard disk — so the victim can no longer use the data;
  • Preventing normal access 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.

Sf:Critroni-B [Trj]

The most regular channels through which Sf:Critroni-B [Trj] Trojans 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 a consequence of customer winding up on a resource that hosts a harmful software program;

As soon as the Trojan is efficiently infused, it will either cipher the data on the victim’s computer or prevent the tool from operating in an appropriate manner – while also putting a ransom money note that mentions the demand for the targets to effect the payment for the function of decrypting the files or recovering the data system back to the initial problem. In the majority of circumstances, the ransom money note will come up when the client reboots the PC after the system has already been harmed.

Sf:Critroni-B [Trj] circulation channels.

In different edges of the world, Sf:Critroni-B [Trj] expands by jumps and bounds. However, the ransom notes and methods of extorting the ransom quantity might vary depending upon particular local (local) setups. The ransom money notes and also techniques of obtaining the ransom quantity might differ depending on certain neighborhood (regional) setups.

Ransomware injection

For example:

    Faulty informs concerning unlicensed software application.

    In particular areas, the Trojans commonly wrongfully report having actually spotted some unlicensed applications allowed on the target’s gadget. The sharp after that demands the user to pay the ransom.

    Faulty statements concerning illegal web content.

    In countries where software application piracy is much less preferred, this method is not as effective for the cyber scams. Alternatively, the Sf:Critroni-B [Trj] popup alert might falsely claim to be stemming from a law enforcement establishment and also will certainly report having situated kid porn or other illegal information on the device.

    Sf:Critroni-B [Trj] popup alert might incorrectly declare to be acquiring from a law enforcement organization and will report having located kid porn or other illegal information on the gadget. The alert will likewise contain a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: 34C1C1A5
md5: e89f09fdded777ceba6412d55ce9d3bc
name: E89F09FDDED777CEBA6412D55CE9D3BC.mlw
sha1: 2f0a828d187a1d4d0761f3a2d60b8540012a54af
sha256: b3c92d7a9dead6011f3c99829c745c384dd776d88f57bbd60bc4f9d66641819b
sha512: 3c3269e25d0559e7f969b28382fa6542c3320572f01da55bac77547e4ac42d2b02823b2d24d9ebc982e88f2a9764000a6b1c0359ffbee10bf6ce007c2ade1cfe
ssdeep: 12288:a1ioqbsOUnHYLhDKYTDW/ordLVzSLanaBMHFbXANVBrTFEAAFE/svglm:a1ZSUnHYLhvXioU2f1XoZTSZFEOp
type: PE32 executable (GUI) Intel 80386, for MS Windows, PECompact2 compressed

Version Info:

0: [No Data]

Sf:Critroni-B [Trj] also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.RapruaQ.Trojan
K7AntiVirus Trojan ( 0049d6d71 )
Elastic malicious (high confidence)
DrWeb Trojan.Packed.28288
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.Critroni
ALYac Trojan.Ransom.cryptolocker
Cylance Unsafe
Zillya Trojan.VB.Win32.122046
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Critroni.d9c65d9f
K7GW Trojan ( 0049d6d71 )
Cybereason malicious.dded77
Cyren W32/Trojan.YYRO-5167
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/Filecoder.CTBLocker.A
Zoner Trojan.Win32.25310
APEX Malicious
Avast Sf:Critroni-B [Trj]
ClamAV Win.Trojan.Critroni-2
Kaspersky Trojan.Win32.VB.cogo
BitDefender Trojan.Dropper.XAP
NANO-Antivirus Trojan.Win32.VB.dcjssp
ViRobot Trojan.Win32.Agent.706459
SUPERAntiSpyware Trojan.Agent/Ransom-Critroni
MicroWorld-eScan Trojan.Dropper.XAP
Tencent Win32.Trojan.Vb.Alsp
Ad-Aware Trojan.Dropper.XAP
Sophos Mal/Generic-S + Mal/Generic-L
Comodo Malware@#3jkl6bva3xlmj
BitDefenderTheta Gen:NN.ZexaF.34670.Ri3@aCu9jYic
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Generic.jc
FireEye Generic.mg.e89f09fdded777ce
Emsisoft Trojan.Dropper.XAP (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/VB.cwmo
Webroot Trojan.Dropper.Gen
Avira TR/Dropper.VB.18398
eGambit Unsafe.AI_Score_99%
Kingsoft Win32.Troj.VB.co.(kcloud)
Microsoft Ransom:Win32/Critroni.A
Arcabit Trojan.Dropper.XAP
GData Win32.Trojan.Kryptik.P
AhnLab-V3 Trojan/Win32.Critroni.R115128
McAfee Generic.ub
MAX malware (ai score=100)
VBA32 Malware-Cryptor.VB.gen.9
Malwarebytes Malware.Heuristic.1001
Panda Trj/Crypdef.A
TrendMicro-HouseCall TROJ_CRYPCTB.A
Rising Ransom.Critroni!8.AAC (CLOUD)
Ikarus Trojan-Ransom.CTBLocker
Fortinet W32/VB.BHYP!tr
AVG Sf:Critroni-B [Trj]
Paloalto generic.ml
Qihoo-360 Win32/Worm.VB.HxMBHvsA

How to remove Sf:Critroni-B [Trj] 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 Sf:Critroni-B [Trj] 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 Sf:Critroni-B [Trj] you can always ask me in the comments for getting help.

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  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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