Ransom:Win32/Weenloc!atmn

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

What is Ransom:Win32/Weenloc!atmn infection?

In this article you will locate regarding the definition of Ransom:Win32/Weenloc!atmn and its negative effect on your computer system. Such ransomware are a type of malware that is specified by on-line fraudulences to demand paying the ransom money by a target.

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Most of the cases, Ransom:Win32/Weenloc!atmn infection will certainly instruct its victims to start funds transfer for the function of neutralizing the changes that the Trojan infection has actually presented to the target’s tool.

Ransom:Win32/Weenloc!atmn Summary

These alterations can be as adheres to:

  • 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.
  • Expresses interest in specific running processes;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • Unconventionial language used in binary resources: Russian;
  • 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;
  • 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.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Attempts to modify Explorer settings to prevent hidden files from being displayed;
  • Ciphering the files located on the victim’s hard disk — so the target can no more use the information;
  • Preventing normal access to the target’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.

Ransom:Win32/Weenloc!atmn

The most regular networks through which Ransom:Win32/Weenloc!atmn Ransomware Trojans are injected are:

  • By methods of phishing emails;
  • As an effect of individual winding up on a source that organizes a destructive software;

As soon as the Trojan is efficiently injected, it will either cipher the information on the sufferer’s computer or protect against the gadget from functioning in a correct manner – while likewise positioning a ransom note that points out the need for the targets to impact the repayment for the purpose of decrypting the files or bring back the file system back to the initial problem. In most instances, the ransom money note will certainly show up when the client restarts the PC after the system has actually currently been damaged.

Ransom:Win32/Weenloc!atmn circulation networks.

In different edges of the globe, Ransom:Win32/Weenloc!atmn expands by leaps and bounds. However, the ransom money notes as well as techniques of obtaining the ransom amount may vary relying on certain neighborhood (local) settings. The ransom notes and also methods of obtaining the ransom amount may vary depending on certain regional (local) setups.

Ransomware injection

As an example:

    Faulty alerts about unlicensed software program.

    In certain areas, the Trojans frequently wrongfully report having spotted some unlicensed applications allowed on the victim’s gadget. The alert after that demands the individual to pay the ransom money.

    Faulty statements regarding prohibited material.

    In countries where software application piracy is much less prominent, this technique is not as efficient for the cyber scams. Additionally, the Ransom:Win32/Weenloc!atmn popup alert might falsely declare to be deriving from a police establishment and also will certainly report having located kid porn or various other illegal information on the gadget.

    Ransom:Win32/Weenloc!atmn popup alert might incorrectly assert to be obtaining from a law enforcement establishment and will report having located child porn or various other prohibited information on the device. The alert will in a similar way include a demand for the individual to pay the ransom.

Technical details

File Info:

crc32: 36BCA223
md5: da96d6d2f63e46571daa20275937039d
name: DA96D6D2F63E46571DAA20275937039D.mlw
sha1: b38a18e65db9ab1ea785c92975d97bb45bb7559d
sha256: 93cc4664dff74ca4ae9d6afb9efbdd382abbda8cb104fcedcdb31e23dfe408fb
sha512: acfa55dbd6aee6d3581f4ec854d40ac617a48106a665691692036531455da92f592c3a3bf38eebe06d079381969198c6c1a021e636ecc28c6e44797e004a7445
ssdeep: 3072:sGbHwx3GsAFyQbXO0kwXmFRqAh+7QouCv8BATTy+zL9GwqRlcBapeEdmIMysl8:sG7u6jrkwvKaXR0cyYLF6lcBapBddsm
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

0: [No Data]

Ransom:Win32/Weenloc!atmn also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0039911e1 )
Elastic malicious (high confidence)
DrWeb Trojan.Winlock.3333
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.Weenloc.A8
ALYac Trojan.Generic.5848174
Cylance Unsafe
Zillya Trojan.Fullscreen.Win32.36
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_60% (D)
Alibaba Ransom:Win32/Blocker.f2ea24d8
K7GW Trojan ( 0039911e1 )
Cybereason malicious.2f63e4
Baidu Win32.Trojan.LockScreen.b
Cyren W32/Trojan.GDVD-7096
ESET-NOD32 a variant of Win32/LockScreen.AGU
APEX Malicious
TotalDefense Win32/Ransom.BAM
Avast Win32:LockScreen-AHV [Trj]
ClamAV Win.Ransomware.Fullscreen-7347612-0
Kaspersky Trojan-Ransom.Win32.Blocker.jzec
BitDefender Trojan.Generic.5848174
NANO-Antivirus Trojan.Win32.Fullscreen.crnep
SUPERAntiSpyware Trojan.Agent/Gen-Ransom
MicroWorld-eScan Trojan.Generic.5848174
Tencent Trojan-Ransom.Win32.Blocker.jzec
Ad-Aware Trojan.Generic.5848174
Sophos ML/PE-A + Mal/Ransom-AI
Comodo TrojWare.Win32.Ransom.Fullscreen.fgt@4t6ar8
BitDefenderTheta Gen:NN.ZelphiF.34608.jmGfaCAeuShI
VIPRE Trojan.Win32.Birele.mby (v)
TrendMicro Ransom_WINLOCK.SM
McAfee-GW-Edition BehavesLike.Win32.Dropper.cc
FireEye Generic.mg.da96d6d2f63e4657
Emsisoft Trojan.Generic.5848174 (B)
SentinelOne Static AI – Malicious PE
Webroot W32.Trojan.Gen
Avira DR/Delphi.Gen4
eGambit Unsafe.AI_Score_99%
Kingsoft Heur.SSC.5536.1216.(kcloud)
Microsoft Ransom:Win32/Weenloc!atmn
Arcabit Trojan.Generic.D593C6E
GData Trojan.Generic.5848174
TACHYON Ransom/W32.DP-PornoAsset.407040
AhnLab-V3 Trojan/Win32.Atraps.C149088
McAfee GenericRXAA-FA!DA96D6D2F63E
MAX malware (ai score=83)
VBA32 TScope.Trojan.Delf
Malwarebytes Ransom.Filecoder
TrendMicro-HouseCall Ransom_WINLOCK.SM
Rising Trojan.Win32.Weenloc.a (RDMK:cmRtazpIs8ogcr3h9bhr5EoNiGap)
Ikarus Trojan-Ransom.Birele
Fortinet W32/LockScreen.AGU!tr
AVG Win32:LockScreen-AHV [Trj]
Paloalto generic.ml
Qihoo-360 HEUR/QVM11.1.DF37.Malware.Gen

How to remove Ransom:Win32/Weenloc!atmn 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 Ransom:Win32/Weenloc!atmn 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 Ransom:Win32/Weenloc!atmn 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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