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

What is Win32/PSW.OnLineGames.OUM infection?

In this article you will locate concerning the interpretation of Win32/PSW.OnLineGames.OUM and also its adverse impact on your computer system. Such ransomware are a form of malware that is specified by online fraudulences to require paying the ransom by a victim.

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In the majority of the situations, Win32/PSW.OnLineGames.OUM virus will certainly advise its targets to launch funds move for the objective of neutralizing the amendments that the Trojan infection has actually presented to the sufferer’s device.

Win32/PSW.OnLineGames.OUM Summary

These modifications can be as follows:

  • Injection with CreateRemoteThread in a remote process;
  • 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;
  • Expresses interest in specific running processes;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Code injection with CreateRemoteThread in a remote process;
  • 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;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents located on the victim’s hard disk drive — so the victim can no longer make use of the information;
  • Preventing normal access to the sufferer’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.


The most regular networks through which Win32/PSW.OnLineGames.OUM Ransomware Trojans are injected are:

  • By means of phishing emails;
  • As a repercussion of customer ending up on a source that holds a harmful software application;

As quickly as the Trojan is successfully injected, it will either cipher the data on the victim’s computer or avoid the tool from operating in a correct fashion – while likewise placing a ransom note that mentions the demand for the targets to effect the payment for the function of decrypting the records or restoring the file system back to the preliminary condition. In a lot of instances, the ransom note will show up when the client restarts the COMPUTER after the system has currently been harmed.

Win32/PSW.OnLineGames.OUM distribution channels.

In numerous corners of the globe, Win32/PSW.OnLineGames.OUM expands by jumps as well as bounds. Nevertheless, the ransom notes and also techniques of obtaining the ransom quantity might differ relying on certain local (regional) setups. The ransom money notes and also tricks of obtaining the ransom money amount may differ depending on certain neighborhood (local) setups.

Ransomware injection

For example:

    Faulty alerts concerning unlicensed software program.

    In specific areas, the Trojans frequently wrongfully report having spotted some unlicensed applications enabled on the sufferer’s tool. The sharp after that requires the user to pay the ransom money.

    Faulty declarations about unlawful material.

    In countries where software application piracy is much less prominent, this technique is not as effective for the cyber fraudulences. Additionally, the Win32/PSW.OnLineGames.OUM popup alert might falsely assert to be deriving from a law enforcement establishment and also will report having located kid pornography or other prohibited data on the gadget.

    Win32/PSW.OnLineGames.OUM popup alert may wrongly assert to be deriving from a legislation enforcement organization as well as will report having situated kid pornography or other prohibited data on the gadget. The alert will likewise include a need for the user to pay the ransom.

Technical details

File Info:

crc32: 28A8AB19
md5: 238fd30e030c6888e516f24dc84769e6
name: 238FD30E030C6888E516F24DC84769E6.mlw
sha1: ec0b6f639c7cf55ec74fc7bb31cc0f262c49ed77
sha256: 45dbd142f41c0cdcdb7286ef3865012e7e95a7d16d4d246832c37a2754722abc
sha512: 805c1a154a276ff541a6e3a5395a772ba2cab5f37784ee6d97a0f7648287afb6fefbe55366271b6ef90193d937690563dd304ad59b528f1a6476a094b5a53d9c
ssdeep: 3072:B5L0Apqur+rylSgn8y/VfL3LJ7ooCvtQqGgUHQfWKq:vZp3d1VLBooWtJGhQfWK
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/PSW.OnLineGames.OUM also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.Common.825F1828
K7AntiVirus Hacktool ( 005288b81 )
Elastic malicious (high confidence)
DrWeb Trojan.PWS.Wsgame.28475
Cynet Malicious (score: 100)
ALYac Gen:Variant.Taterf.20
Cylance Unsafe
Zillya Trojan.Vaklik.Win32.3650
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_90% (W)
Alibaba Worm:Win32/Taterf.28221a1d
K7GW Hacktool ( 005288b81 )
Cybereason malicious.e030c6
Cyren W32/Taterf.C.gen!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/PSW.OnLineGames.OUM
APEX Malicious
Avast Win32:FrePack [Cryp]
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Taterf.20
NANO-Antivirus Trojan.Win32.Wsgame.ctxzuo
MicroWorld-eScan Gen:Variant.Taterf.20
Ad-Aware Gen:Variant.Taterf.20
Sophos ML/PE-A + Mal/Taterf-E
Comodo Malware@#61peznm4ukn6
BitDefenderTheta Gen:NN.ZexaF.34738.kCWbaS4xJLg
VIPRE Trojan.Win32.Generic!BT
TrendMicro TROJ_GEN.R002C0DFE21
Emsisoft Gen:Variant.Taterf.20 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan/Vaklik.ecu
Webroot W32.Trojan.Gen
Avira TR/Crypt.ASPM.Gen2
Antiy-AVL Trojan/Generic.ASMalwS.6AAC99
Kingsoft Win32.Troj.Vaklik.(kcloud)
Microsoft Trojan:Win32/Toga!rfn
AegisLab Trojan.Win32.Vaklik.4!c
GData Gen:Variant.Taterf.20
AhnLab-V3 Dropper/Win32.OnlineGameHack.R11726
McAfee Artemis!238FD30E030C
MAX malware (ai score=83)
VBA32 TScope.Malware-Cryptor.SB
Panda Generic Malware
TrendMicro-HouseCall TROJ_GEN.R002C0DFE21
Yandex Trojan.PWS.OnLineGames!KFvVWiy+LbQ
Ikarus Trojan-GameThief.Win32.Magania
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Onlinegames.PVJ!tr.pws
AVG Win32:FrePack [Cryp]

How to remove Win32/PSW.OnLineGames.OUM 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/PSW.OnLineGames.OUM 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/PSW.OnLineGames.OUM you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site:
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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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