Trojan.Win32.Stosek

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

What is Trojan.Win32.Stosek infection?

In this article you will discover regarding the interpretation of Trojan.Win32.Stosek and also its negative impact on your computer system. Such ransomware are a kind of malware that is elaborated by on-line frauds to demand paying the ransom money by a victim.

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In the majority of the cases, Trojan.Win32.Stosek ransomware will instruct its sufferers to launch funds transfer for the purpose of neutralizing the modifications that the Trojan infection has actually presented to the sufferer’s device.

Trojan.Win32.Stosek Summary

These modifications can be as follows:

  • A process attempted to delay the analysis task.;
  • 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.
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic;
  • 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.
  • The executable is compressed using UPX;
  • Uses Windows utilities for basic functionality;
  • Attempts to stop active services;
  • Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
  • 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.
  • Clears Windows events or logs;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the files located on the victim’s hard drive — so the target can no longer use the data;
  • Preventing routine access to the sufferer’s workstation;
Similar behavior
Related domains
h1dd3n.ccTrojanransom.Generic

Trojan.Win32.Stosek

One of the most normal channels whereby Trojan.Win32.Stosek are injected are:

  • By means of phishing emails;
  • As a consequence of individual ending up on a resource that holds a harmful software program;

As quickly as the Trojan is efficiently injected, it will either cipher the information on the victim’s computer or protect against the device from functioning in a correct fashion – while additionally positioning a ransom note that points out the demand for the victims to impact the settlement for the function of decrypting the documents or bring back the documents system back to the preliminary problem. In a lot of instances, the ransom money note will turn up when the client reboots the PC after the system has already been harmed.

Trojan.Win32.Stosek circulation networks.

In numerous edges of the globe, Trojan.Win32.Stosek grows by jumps and also bounds. Nonetheless, the ransom money notes and also tricks of obtaining the ransom money quantity may vary depending upon certain regional (regional) settings. The ransom money notes as well as methods of obtaining the ransom amount might differ depending on certain regional (local) settings.

Ransomware injection

For instance:

    Faulty signals concerning unlicensed software application.

    In particular areas, the Trojans frequently wrongfully report having discovered some unlicensed applications made it possible for on the sufferer’s gadget. The sharp then demands the individual to pay the ransom money.

    Faulty declarations concerning illegal content.

    In nations where software application piracy is much less preferred, this method is not as reliable for the cyber fraudulences. Alternatively, the Trojan.Win32.Stosek popup alert may wrongly declare to be stemming from a law enforcement establishment and also will report having located child porn or various other prohibited information on the tool.

    Trojan.Win32.Stosek popup alert may falsely assert to be obtaining from a regulation enforcement institution and also will report having located kid porn or other illegal data on the device. The alert will likewise have a requirement for the user to pay the ransom money.

Technical details

File Info:

crc32: B7054B55
md5: 62c7d9c6520df2794ffea6403de2e2e4
name: 62C7D9C6520DF2794FFEA6403DE2E2E4.mlw
sha1: f95cd553bb9fe4eff3b8e9a496e241cd5cd3d216
sha256: e720a7a7074d01cd746c42d45761506f5d81942ba9b6b3fd845eefc33da15f3d
sha512: 62098bfd34522a6b4fe9f8b5d1c28eb41cba8d59d925f57cb6ce0cb5766fd00f224b719b2cae10a635d3e62fcc247d68e151f849ed81136cebf163ae18797b3e
ssdeep: 24576:ON4EfsPHKoDsFyNiZEoLGKFvtViT2U9un7lvvEqZJUB8yS+f2zX8OnVfbjZ2p7C:Iz0HDMyNPoVFGIRvvEX++fWX7Zbjw1C
type: PE32 executable (console) Intel 80386, for MS Windows, UPX compressed

Version Info:

0: [No Data]

Trojan.Win32.Stosek also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware2
Elasticmalicious (high confidence)
CynetMalicious (score: 100)
CAT-QuickHealTrojanransom.Generic
ALYacGen:Heur.Ransom.RTH.1
CylanceUnsafe
Cybereasonmalicious.6520df
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of Win32/Filecoder.Ouroboros.G
APEXMalicious
AvastWin32:RansomX-gen [Ransom]
ClamAVWin.Ransomware.Vipasana-9783618-1
KasperskyHEUR:Trojan.Win32.Stosek.gen
BitDefenderGen:Heur.Ransom.RTH.1
NANO-AntivirusTrojan.Win32.Stosek.ivcvkt
MicroWorld-eScanGen:Heur.Ransom.RTH.1
Ad-AwareGen:Heur.Ransom.RTH.1
SophosGeneric ML PUA (PUA)
BitDefenderThetaGen:NN.ZexaF.34738.unGfaCQOQiei
McAfee-GW-EditionBehavesLike.Win32.Generic.tc
FireEyeGeneric.mg.62c7d9c6520df279
EmsisoftGen:Heur.Ransom.RTH.1 (B)
AviraHEUR/AGEN.1139736
eGambitUnsafe.AI_Score_94%
Antiy-AVLTrojan/Generic.ASCommon.1B2
MicrosoftProgram:Win32/Wacapew.C!ml
GDataGen:Heur.Ransom.RTH.1
McAfeeGenericRXON-UG!4649D6E5DC85
MAXmalware (ai score=87)
VBA32Trojan.Stosek
RisingMalware.Heuristic!ET#92% (RDMK:cmRtazoPGnSvXRLdUvStlHMBiOBV)
YandexTrojan.Filecoder!BlA8CMjXWYc
IkarusTrojan-Ransom.Ouroboros
AVGWin32:RansomX-gen [Ransom]

How to remove Trojan.Win32.Stosek 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 Trojan.Win32.Stosek 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.Stosek 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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