Sf:Crypt-HC [Trj]

Written by Robert Bailey

What is Sf:Crypt-HC [Trj] infection?

In this article you will certainly locate regarding the interpretation of Sf:Crypt-HC [Trj] and also its unfavorable influence on your computer system. Such ransomware are a type of malware that is clarified by on-line frauds to require paying the ransom by a target.

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Most of the situations, Sf:Crypt-HC [Trj] infection will advise its victims to start funds move for the purpose of neutralizing the changes that the Trojan infection has actually introduced to the sufferer’s gadget.

Sf:Crypt-HC [Trj] Summary

These adjustments 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.
  • 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.

  • Performs some HTTP requests;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • 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 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.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records situated on the target’s hard disk — so the target can no longer utilize the data;
  • Preventing normal accessibility to the victim’s workstation;

Sf:Crypt-HC [Trj]

The most typical channels where Sf:Crypt-HC [Trj] are injected are:

  • By ways of phishing e-mails;
  • As an effect of user ending up on a resource that holds a malicious software application;

As quickly as the Trojan is efficiently infused, it will certainly either cipher the information on the target’s computer or protect against the tool from functioning in an appropriate fashion – while also placing a ransom note that discusses the demand for the sufferers to impact the payment for the purpose of decrypting the papers or recovering the documents system back to the preliminary condition. In most circumstances, the ransom note will come up when the client restarts the PC after the system has currently been damaged.

Sf:Crypt-HC [Trj] distribution channels.

In numerous edges of the globe, Sf:Crypt-HC [Trj] grows by leaps and bounds. Nevertheless, the ransom notes and also tricks of obtaining the ransom amount might vary relying on certain neighborhood (regional) settings. The ransom money notes as well as techniques of obtaining the ransom quantity may differ depending on certain regional (local) setups.

Ransomware injection

For example:

    Faulty notifies concerning unlicensed software.

    In certain locations, the Trojans typically wrongfully report having detected some unlicensed applications made it possible for on the target’s device. The sharp after that demands the individual to pay the ransom.

    Faulty statements regarding prohibited content.

    In nations where software program piracy is much less preferred, this method is not as efficient for the cyber fraudulences. Conversely, the Sf:Crypt-HC [Trj] popup alert may wrongly assert to be stemming from a police establishment and also will certainly report having situated kid porn or various other prohibited information on the device.

    Sf:Crypt-HC [Trj] popup alert may incorrectly claim to be deriving from a regulation enforcement organization and also will report having situated child porn or various other prohibited data on the gadget. The alert will in a similar way have a demand for the user to pay the ransom money.

Technical details

File Info:

crc32: D53CC91E
md5: 14c0558c757c93465eccbbd77d58bbf3
name: 14C0558C757C93465ECCBBD77D58BBF3.mlw
sha1: 6810f392ca6daa1278b0a97629021401c14f3235
sha256: 7a40f3629cb35aa0030dbe4a4ce294e2cf7ad01eda10ea0f66d910ce35da8aff
sha512: 50bb795b95ae77c479572fb19ec4c19be19e6f1c68c08c0d5603ed596cbc08f38591c54132c98d893338a99590b52e328ba59caeecb3b15c4dd9d411f948ae38
ssdeep: 12288:WoxEdD8BBtW5lanZREsFREqUsKDr1MALIODuhBogRyy3rBl/VoFx:WoxEtknClaFFRE3s8fNDuhaS
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Sf:Crypt-HC [Trj] also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.Common.F08FB35B
K7AntiVirus Trojan ( 004b43c51 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.686
Cynet Malicious (score: 100)
CAT-QuickHeal TrojanRansom.Critroni.A3
ALYac Trojan.Ransom.CTBLocker
Cylance Unsafe
Zillya Trojan.FileCryptor.Win32.2
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_80% (D)
Alibaba Ransom:Win32/Onion.90009ea4
K7GW Trojan ( 004b43c51 )
Cybereason malicious.c757c9
Baidu Win32.Trojan.Elenoocka.a
Cyren W32/Ransom.NPPA-3365
Symantec Ransom.CTBLocker
ESET-NOD32 Win32/Filecoder.CTBLocker.A
APEX Malicious
Avast Sf:Crypt-HC [Trj]
ClamAV Win.Trojan.Ransom-9021
Kaspersky Trojan-Ransom.Win32.Onion.aa
BitDefender Trojan.CTBLockerKD.2095075
NANO-Antivirus Trojan.Win32.Vimditator.eopefo
ViRobot Trojan.Win32.CTB-Locker.704512
MicroWorld-eScan Trojan.CTBLockerKD.2095075
Tencent Trojan.Win32.CTB-Locker.b
Ad-Aware Trojan.CTBLockerKD.2095075
Sophos Mal/Generic-R + Troj/Agent-AIRO
Comodo TrojWare.Win32.Crypt.C@7vajd0
BitDefenderTheta AI:Packer.E0F03A5720
VIPRE Ransom.Win32.Critroni
McAfee-GW-Edition BehavesLike.Win32.Ransomware.jc
FireEye Generic.mg.14c0558c757c9346
Emsisoft Trojan.CTBLockerKD.2095075 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/Onion.d
Webroot Trojan.Dropper.Gen
Avira TR/Crypt.ZPACK.htrez
eGambit Unsafe.AI_Score_97%
Antiy-AVL Trojan/Generic.ASMalwS.DE0019
Kingsoft Win32.Troj.CTBLocker.ac.(kcloud)
Microsoft Ransom:Win32/Critroni.A
Arcabit Trojan.CTBLockerKD.D1FF7E3
AegisLab Trojan.Multi.Generic.mged
GData Win32.Trojan-Ransom.Cryptolocker.F@susp
TACHYON Trojan/W32.CTBLocker.704512
AhnLab-V3 Win-Trojan/CTBLocker.Gen
Acronis suspicious
McAfee Generic.vj
MAX malware (ai score=100)
VBA32 Trojan.FakeAV.01657
Panda Trj/WLT.B
TrendMicro-HouseCall TROJ_CRYPCTB.YN
Rising Trojan.Spy.Win32.Critroni.w (CLOUD)
Yandex Trojan.Vimditator!PjMnvWxT5/I
Ikarus Trojan-Ransom.CTBLocker
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Kryptik.CVBD!tr
AVG Sf:Crypt-HC [Trj]
Paloalto generic.ml

How to remove Sf:Crypt-HC [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:Crypt-HC [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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Sf:Crypt-HC [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: http://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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