Win32:Crypt-SKT [Trj]

What is Win32:Crypt-SKT [Trj] infection?

In this post you will find regarding the meaning of Win32:Crypt-SKT [Trj] and also its unfavorable effect on your computer system. Such ransomware are a type of malware that is clarified by on the internet frauds to demand paying the ransom money by a victim.

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Most of the cases, Win32:Crypt-SKT [Trj] ransomware will certainly advise its targets to start funds transfer for the objective of reducing the effects of the modifications that the Trojan infection has actually introduced to the victim’s gadget.

Win32:Crypt-SKT [Trj] Summary

These modifications can be as follows:

  • 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.

  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • 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
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents found on the target’s hard drive — so the sufferer can no longer make use of 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.

Win32:Crypt-SKT [Trj]

The most normal networks whereby Win32:Crypt-SKT [Trj] Trojans are injected are:

  • By means of phishing e-mails;
  • As a consequence of customer ending up on a resource that holds a malicious software program;

As soon as the Trojan is effectively infused, it will either cipher the information on the target’s computer or stop the tool from operating in a correct way – while also placing a ransom money note that mentions the need for the victims to impact the payment for the objective of decrypting the papers or recovering the data system back to the first condition. In a lot of circumstances, the ransom note will certainly show up when the client reboots the PC after the system has currently been harmed.

Win32:Crypt-SKT [Trj] circulation networks.

In different corners of the globe, Win32:Crypt-SKT [Trj] grows by jumps and bounds. However, the ransom notes as well as techniques of extorting the ransom money amount may differ depending upon specific neighborhood (regional) settings. The ransom money notes and methods of extorting the ransom quantity might differ depending on certain regional (regional) setups.

Ransomware injection

For instance:

    Faulty signals concerning unlicensed software program.

    In particular areas, the Trojans often wrongfully report having actually discovered some unlicensed applications made it possible for on the sufferer’s tool. The alert after that demands the individual to pay the ransom.

    Faulty statements regarding illegal content.

    In countries where software piracy is less prominent, this approach is not as effective for the cyber frauds. Additionally, the Win32:Crypt-SKT [Trj] popup alert might wrongly claim to be deriving from a law enforcement institution as well as will report having located kid pornography or various other unlawful information on the device.

    Win32:Crypt-SKT [Trj] popup alert may wrongly declare to be acquiring from a regulation enforcement establishment as well as will certainly report having situated child pornography or various other prohibited information on the gadget. The alert will similarly consist of a need for the individual to pay the ransom money.

Technical details

File Info:

crc32: 76718968
md5: d7aa47c72076cc7230ad96ad6afff6db
name: D7AA47C72076CC7230AD96AD6AFFF6DB.mlw
sha1: b628b22cbc27539f2374e0f9b6bd38fffb3d58a3
sha256: 27dd9d1f6f8fc50d8dd21528170bb38111b3f27cdbf58469d8a9fa6f8a078a44
sha512: f786fb32296553b4bdccb9f968ae770726a835d42940aa9e13b2274624394ad5176567c9af05041ece394858436e78a296bc26170d1fc4ddef400d45918f3ea1
ssdeep: 6144:JIjygShE0s5m/zUCOTBN6pRw1Wbugxlx7gzSDtIQz+GhH1+qoaiaiOYu/JgTWLXo:JZn/zXON1yJfxkzhQzV9HaJmgiQj
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32:Crypt-SKT [Trj] also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Riskware ( 0040eff71 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.567
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.Aura.XB4
ALYac Trojan.Agent.BMYY
Cylance Unsafe
Zillya Trojan.Cryakl.Win32.194
Sangfor Ransom.Win32.Cryakl.abv
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Cryakl.dbe97e0b
K7GW Riskware ( 0040eff71 )
Cybereason malicious.72076c
Cyren W32/Trojan.NRXL-1288
ESET-NOD32 Win32/Filecoder.EQ
APEX Malicious
Avast Win32:Crypt-SKT [Trj]
Kaspersky Trojan-Ransom.Win32.Cryakl.abv
BitDefender Trojan.Agent.BMYY
NANO-Antivirus Trojan.Win32.Inject.dxiaae
ViRobot Trojan.Win32.U.Ransom.450362
MicroWorld-eScan Trojan.Agent.BMYY
Tencent Malware.Win32.Gencirc.114c10e1
Ad-Aware Trojan.Agent.BMYY
Sophos Mal/Generic-S + Troj/Ransom-BJV
Comodo TrojWare.Win32.Ransom.Criakl.B@65dovj
BitDefenderTheta Gen:NN.ZexaF.34628.BqZ@aa1@G3pm
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_CRYPICH.B
McAfee-GW-Edition BehavesLike.Win32.Generic.gc
FireEye Generic.mg.d7aa47c72076cc72
Emsisoft Trojan.Agent.BMYY (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.Cryakl.r
Webroot W32.Trojan.Gen
Avira HEUR/AGEN.1115136
eGambit Generic.Malware
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Ransom:Win32/Criakl.D
Arcabit Trojan.Agent.BMYY
AegisLab Trojan.Win32.Cryakl.mBbD
GData Trojan.Agent.BMYY
TACHYON Trojan/W32.Cryakl.450362
AhnLab-V3 Trojan/Win32.MDA.R164909
McAfee PWSZbot-FANX!D7AA47C72076
MAX malware (ai score=100)
VBA32 Hoax.Cryakl
Panda Trj/CI.A
TrendMicro-HouseCall Ransom_CRYPICH.B
Rising Malware.Obscure/Heur!1.9E03 (CLOUD)
Ikarus Trojan-Spy.Zbot
Fortinet W32/Generic.AP.40050
AVG Win32:Crypt-SKT [Trj]
Qihoo-360 Win32/Ransom.Criakl.HgIASOoA

How to remove Win32:Crypt-SKT [Trj] ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
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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 Win32:Crypt-SKT [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 Win32:Crypt-SKT [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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