Sf:Crypt-AR [Trj]

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

In this post you will locate concerning the meaning of Sf:Crypt-AR [Trj] as well as its adverse impact on your computer system. Such ransomware are a form of malware that is specified by on the internet scams to demand paying the ransom by a victim.

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In the majority of the instances, Sf:Crypt-AR [Trj] virus will certainly instruct its sufferers to start funds move for the purpose of reducing the effects of the changes that the Trojan infection has introduced to the victim’s gadget.

Sf:Crypt-AR [Trj] Summary

These modifications can be as complies with:

  • Injection (inter-process);
  • Injection with CreateRemoteThread in a remote process;
  • Mimics the system’s user agent string for its own requests;
  • 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;
  • Attempts to delete volume shadow copies;
  • Attempts to stop active services;
  • Modifies boot configuration settings;
  • 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 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.
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Creates a copy of itself;
  • Attempts to disable System Restore. System Restore function – allows you to revert the computer’s state (system files, applications, and system settings) to that of a previous point in time, which can be used to recover after a virus attack.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the documents found on the victim’s hard drive — so the victim can no longer utilize the information;
  • Preventing normal access to the victim’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:Crypt-AR [Trj]

One of the most normal channels through which Sf:Crypt-AR [Trj] are infused are:

  • By means of phishing emails;
  • As an effect of customer winding up on a source that holds a harmful software;

As soon as the Trojan is efficiently infused, it will certainly either cipher the information on the target’s computer or stop the device from working in a proper fashion – while also positioning a ransom note that points out the demand for the victims to impact the settlement for the purpose of decrypting the records or recovering the documents system back to the preliminary condition. In most circumstances, the ransom money note will certainly show up when the customer reboots the COMPUTER after the system has currently been damaged.

Sf:Crypt-AR [Trj] distribution channels.

In numerous corners of the world, Sf:Crypt-AR [Trj] expands by leaps as well as bounds. Nonetheless, the ransom money notes and techniques of extorting the ransom amount might vary depending upon particular neighborhood (regional) setups. The ransom money notes and also techniques of extorting the ransom money amount may vary depending on certain regional (local) setups.

Ransomware injection

For instance:

    Faulty alerts about unlicensed software program.

    In particular locations, the Trojans typically wrongfully report having detected some unlicensed applications allowed on the target’s tool. The alert after that demands the user to pay the ransom money.

    Faulty declarations concerning unlawful content.

    In countries where software piracy is much less prominent, this technique is not as effective for the cyber scams. Conversely, the Sf:Crypt-AR [Trj] popup alert may wrongly declare to be deriving from a police organization and will certainly report having situated child pornography or various other prohibited information on the device.

    Sf:Crypt-AR [Trj] popup alert may incorrectly claim to be acquiring from a legislation enforcement institution and also will report having located kid pornography or various other prohibited data on the gadget. The alert will in a similar way contain a requirement for the individual to pay the ransom.

Technical details

File Info:

crc32: D6C3AFB7
md5: 8b9761ee9ec7bed04d40900ba31f1cc8
name: 8B9761EE9EC7BED04D40900BA31F1CC8.mlw
sha1: 6e9d2ac90b7548eb7c2577a4463e496795941a99
sha256: 2c24e2ea9dd67a5e72971185c262d2565a60ee90bbe731d5b25b21bbbf70b213
sha512: 6a6b4767e341c15117fd817783b705f4ff8a0e4d8aef4d1f4cef8e5ca1124711e7ed5a08b21407a468c3a2cc7b766ac0a1dd5b840298c558a78798760c1c557c
ssdeep: 3072:6hRx8zd/EtzAAa1roAl4bI+m/B6SVqCgQfBUnPy8L66iiSM:6hkdEt8AMrmI+m/B6SVqCgQfBUPy8L6
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

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

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0040fa3d1 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.514
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.Crowti.16508
McAfee GenericRXEN-SA!8B9761EE9EC7
Cylance Unsafe
Zillya Trojan.Cryptodef.Win32.316
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_80% (D)
Alibaba TrojanDropper:Win32/dropper.ali1003001
K7GW Trojan ( 0040fa3d1 )
Cybereason malicious.e9ec7b
Cyren W32/S-5799ca41!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Filecoder.CryptoWall.D
APEX Malicious
Avast Sf:Crypt-AR [Trj]
ClamAV Win.Ransomware.Upatre-7101380-0
Kaspersky Trojan-Ransom.Win32.Cryptodef.cjb
BitDefender Generic.TeslaCrypt.3CD166B0
NANO-Antivirus Virus.Win32.Gen.ccmw
SUPERAntiSpyware Trojan.Agent/Gen-Ransom
MicroWorld-eScan Generic.TeslaCrypt.3CD166B0
Tencent Malware.Win32.Gencirc.10c35e76
Ad-Aware Generic.TeslaCrypt.3CD166B0
Sophos Mal/Generic-R + Troj/Ransom-AGU
Comodo Malware@#4wqhrsfrk4gj
BitDefenderTheta Gen:NN.ZexaF.34628.iqW@ayDnXih
VIPRE Trojan.Win32.Filecoder.cof (v)
TrendMicro TROJ_CRYPWALL.SMJC
McAfee-GW-Edition BehavesLike.Win32.Generic.ch
FireEye Generic.mg.8b9761ee9ec7bed0
Emsisoft Generic.TeslaCrypt.3CD166B0 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/Cryptodef.dw
Webroot Trojan.Dropper.Gen
Avira TR/Crypt.XPACK.Gen
eGambit Unsafe.AI_Score_91%
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Ransom:Win32/Crowti.A
Arcabit Generic.TeslaCrypt.3CD166B0
AegisLab Trojan.Win32.Cryptodef.4!c
ZoneAlarm Trojan-Ransom.Win32.Cryptodef.cjb
GData Generic.TeslaCrypt.3CD166B0
TACHYON Trojan/W32.Cryptodef.132096
AhnLab-V3 Trojan/Win32.CryptoWall.R135312
Acronis suspicious
VBA32 BScope.TrojanPSW.Spy
MAX malware (ai score=100)
Malwarebytes Trojan.CryptoLocker
Panda Trj/RansomCrypt.D
TrendMicro-HouseCall TROJ_CRYPWALL.SMJC
Rising Ransom.Crowti!8.37D (CLOUD)
Yandex Trojan.Agent!2fsyb5zdvgc
Ikarus Trojan.Win32.Filecoder
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/RANSOM.AGU!tr
AVG Sf:Crypt-AR [Trj]
Qihoo-360 Win32/Trojan.1a7

How to remove Sf:Crypt-AR [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-AR [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-AR [Trj] 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/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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