Trojan:Win32/Skeeeyah!rfn

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is Trojan:Win32/Skeeeyah!rfn infection?

In this post you will certainly locate concerning the definition of Trojan:Win32/Skeeeyah!rfn as well as its unfavorable influence on your computer system. Such ransomware are a type of malware that is specified by on-line frauds to require paying the ransom money by a target.

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Most of the situations, Trojan:Win32/Skeeeyah!rfn infection will advise its sufferers to initiate funds transfer for the purpose of neutralizing the modifications that the Trojan infection has actually presented to the sufferer’s tool.

Trojan:Win32/Skeeeyah!rfn 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.
  • 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.
  • Possible date expiration check, exits too soon after checking local time;
  • 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.

  • 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 executable is compressed using UPX;
  • A scripting utility was executed;
  • Uses Windows utilities for basic functionality;
  • 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
  • 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.
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Creates a copy of itself;
  • Creates a slightly modified copy of itself;
  • Ciphering the records located on the victim’s hard disk — so the sufferer can no longer make use of the data;
  • Preventing routine access to the sufferer’s workstation;

Trojan:Win32/Skeeeyah!rfn

One of the most regular channels whereby Trojan:Win32/Skeeeyah!rfn Ransomware are infused are:

  • By ways of phishing emails;
  • As a repercussion of user winding up on a resource that hosts a harmful software;

As soon as the Trojan is effectively infused, it will certainly either cipher the data on the victim’s PC or avoid the gadget from operating in an appropriate manner – while also putting a ransom note that points out the requirement for the targets to effect the settlement for the objective of decrypting the files or restoring the file system back to the initial problem. In most circumstances, the ransom money note will show up when the client restarts the COMPUTER after the system has actually currently been damaged.

Trojan:Win32/Skeeeyah!rfn distribution networks.

In various corners of the globe, Trojan:Win32/Skeeeyah!rfn expands by jumps and bounds. Nevertheless, the ransom notes as well as techniques of extorting the ransom quantity might differ depending on certain regional (regional) settings. The ransom money notes and also tricks of obtaining the ransom money quantity might vary depending on particular local (regional) settings.

Ransomware injection

As an example:

    Faulty alerts concerning unlicensed software program.

    In certain areas, the Trojans usually wrongfully report having spotted some unlicensed applications enabled on the sufferer’s device. The alert after that requires the customer to pay the ransom money.

    Faulty statements about illegal material.

    In nations where software application piracy is less prominent, this method is not as efficient for the cyber fraudulences. Alternatively, the Trojan:Win32/Skeeeyah!rfn popup alert may wrongly assert to be stemming from a law enforcement establishment as well as will report having situated child porn or other illegal information on the gadget.

    Trojan:Win32/Skeeeyah!rfn popup alert may incorrectly declare to be obtaining from a regulation enforcement establishment and also will certainly report having located youngster porn or other unlawful information on the tool. The alert will likewise include a demand for the user to pay the ransom.

Technical details

File Info:

crc32: A039FF8C
md5: c98916db28ba6fc8a151c318c44f6f48
name: upload_file
sha1: 1e03b7a266bff972782e795830f1d6e05a597aa5
sha256: d74ab1e7bed4731a43646bb0a4d515321f25146a2e28d48686a03072ce4dabc8
sha512: 04d2ec7722a4b5863d4b3ff4c4cac3a7008b0b6e7bcac546a51a2c6a1784fead221897fab08699f6645fbefcd1da310f675997e999ca9242a82417bc82e0be9c
ssdeep: 24576:ATU7AAmZZcVKfIxTiEVc847flVC6faaQDbGV6eH81k6IbGD2JTu0GoZQDbGV6eHX:ATU7AAmw4gxeOw46fUbNecCCFbNecg
type: PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows, UPX compressed

Version Info:

LegalCopyright: Copyright (C) 2000
InternalName: FlowerPower
FileVersion: 1, 0, 0, 1
CompanyName:
PrivateBuild:
LegalTrademarks:
Comments:
ProductName: FlowerPower
SpecialBuild:
ProductVersion: 1, 0, 0, 1
FileDescription: FlowerPower
OriginalFilename: FlowerPower.EXE
Translation: 0x0c09 0x04b0

Trojan:Win32/Skeeeyah!rfn also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetectVM.malware1
Elastic malicious (high confidence)
DrWeb Trojan.Inject3.16347
MicroWorld-eScan MemScan:Trojan.Agent.ECLV
FireEye Generic.mg.c98916db28ba6fc8
CAT-QuickHeal Trojan.Mauvaise.SL1
ALYac MemScan:Trojan.Agent.ECLV
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
Sangfor Malware
K7AntiVirus Trojan ( 00550e441 )
BitDefender MemScan:Trojan.Agent.ECLV
K7GW Trojan ( 00550e441 )
Cybereason malicious.266bff
TrendMicro Trojan.Win32.POISON.SMTHLV
BitDefenderTheta Gen:NN.ZexaF.34570.4s3@aGODL8ai
Cyren W32/Injector.HCZU-8989
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Sf:ShellCode-CU [Trj]
ClamAV Win.Malware.Ursu-6793772-0
Kaspersky HEUR:Trojan.Win32.Generic
NANO-Antivirus Trojan.Win32.Inject3.fqtflc
Tencent Malware.Win32.Gencirc.10b076c3
Ad-Aware MemScan:Trojan.Agent.ECLV
Sophos Troj/Agent-BCEX
Comodo TrojWare.Win32.Injector.AVPL@8d26g3
F-Secure Backdoor.BDS/Poison.mon
Zillya Trojan.GenKryptik.Win32.30815
Invincea ML/PE-A + Troj/Agent-BCEX
McAfee-GW-Edition BehavesLike.Win32.Ransomware.vc
Emsisoft MemScan:Trojan.Agent.ECLV (B)
Ikarus VirTool.Win32.CeeInject.A
Jiangmin Trojan.Generic.dztud
MaxSecure Trojan.Malware.121218.susgen
Avira BDS/Poison.mon
Antiy-AVL Trojan/Win32.Nymaim
Microsoft Trojan:Win32/Skeeeyah!rfn
Arcabit Trojan.Agent.ECLV
ZoneAlarm HEUR:Trojan.Win32.Generic
GData MemScan:Trojan.Agent.ECLV
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.RL_Fuery.R280427
Acronis suspicious
McAfee Ransomware-GPB!C98916DB28BA
MAX malware (ai score=87)
VBA32 SScope.Trojan.Hlux
Malwarebytes Trojan.Agent
Panda Trj/Genetic.gen
Zoner Trojan.Win32.89366
ESET-NOD32 Win32/Agent.TJS
TrendMicro-HouseCall Trojan.Win32.POISON.SMTHLV
Rising Trojan.Kryptik!1.BA0B (CLASSIC)
Yandex Backdoor.SpyGate!
SentinelOne DFI – Malicious PE
eGambit Trojan.Generic
Fortinet W32/GenKryptik.DJNF!tr
Webroot W32.Malware.Gen
AVG Sf:ShellCode-CU [Trj]
CrowdStrike win/malicious_confidence_100% (D)
Qihoo-360 HEUR/QVM07.1.AE2F.Malware.Gen

How to remove Trojan:Win32/Skeeeyah!rfn virus?

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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The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

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 Trojan:Win32/Skeeeyah!rfn 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 Trojan:Win32/Skeeeyah!rfn 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/comparison

About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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