Written by Robert Bailey

What is VirTool:Win32/Obfuscator.ALM infection?

In this post you will find regarding the definition of VirTool:Win32/Obfuscator.ALM and also its adverse influence on your computer. Such ransomware are a form of malware that is elaborated by online fraudulences to demand paying the ransom money by a target.

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Most of the cases, VirTool:Win32/Obfuscator.ALM infection will certainly instruct its sufferers to start funds transfer for the function of counteracting the amendments that the Trojan infection has presented to the victim’s gadget.

VirTool:Win32/Obfuscator.ALM 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.

  • A process created a hidden window;
  • Unconventionial language used in binary resources: Czech;
  • Executed a process and injected code into it, probably while unpacking;
  • Attempts to delete volume shadow copies;
  • 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!
  • A system process is generating network traffic likely as a result of process injection;
  • 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
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Creates a copy of itself;
  • Harvests information related to installed mail clients;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the documents situated on the sufferer’s hard drive — so the target can no longer use the information;
  • Preventing regular 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.


One of the most typical networks where VirTool:Win32/Obfuscator.ALM are injected are:

  • By means of phishing e-mails;
  • As an effect of individual winding up on a source that holds a harmful software;

As quickly as the Trojan is effectively injected, it will certainly either cipher the information on the target’s PC or avoid the gadget from working in an appropriate manner – while likewise placing a ransom note that states the demand for the targets to effect the payment for the function of decrypting the documents or restoring the file system back to the first condition. In many instances, the ransom money note will certainly come up when the client restarts the COMPUTER after the system has actually already been damaged.

VirTool:Win32/Obfuscator.ALM distribution networks.

In different corners of the globe, VirTool:Win32/Obfuscator.ALM grows by jumps and also bounds. However, the ransom money notes and techniques of obtaining the ransom quantity may differ depending upon certain regional (local) setups. The ransom notes as well as methods of extorting the ransom money quantity might differ depending on particular regional (local) settings.

Ransomware injection

For instance:

    Faulty signals regarding unlicensed software program.

    In specific areas, the Trojans usually wrongfully report having detected some unlicensed applications enabled on the target’s tool. The sharp then demands the user to pay the ransom.

    Faulty declarations concerning illegal content.

    In nations where software application piracy is less prominent, this approach is not as efficient for the cyber scams. Additionally, the VirTool:Win32/Obfuscator.ALM popup alert might wrongly declare to be originating from a law enforcement establishment and will report having situated youngster pornography or various other illegal data on the gadget.

    VirTool:Win32/Obfuscator.ALM popup alert might falsely declare to be obtaining from a law enforcement establishment and will certainly report having situated kid porn or other unlawful data on the gadget. The alert will likewise consist of a need for the customer to pay the ransom.

Technical details

File Info:

crc32: 02D74708
md5: c35e0b4376374d9b4857648bdd988b03
name: C35E0B4376374D9B4857648BDD988B03.mlw
sha1: d60e206adc1e80fdca30eefd087b872293512046
sha256: 5b997d8cd92576f65849bf8ac50899364950a1a833c0d7017940b94efe92534a
sha512: c833d5315dcf0406dc8eb1b35bb3432cc6093a34e08d211b672ab6ca7b5af2a6dbcd2c8f18b4f04400ec6775ad159dec69e0ffed8ed714c714545e661f78b093
ssdeep: 6144:Fi0LrqaFy7EtKqzM1kLpGZmx0QXeY2ETs+9dzTIvUNZd1X5ecE:F3v3I7gKqzVWFYjTB7zdNZv5e
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: (C) 2012 NVIDIA Corporation. All rights reserved.
InternalName: nvStWiz.exe
CompanyName: NVIDIA Corporation
ProductName: GeForce 3D Vision Wizard
FileDescription: GeForce 3D Vision Wizard
OriginalFilename: nvStWiz.exe
Translation: 0x0409 0x04b0

VirTool:Win32/Obfuscator.ALM also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 0055e3ef1 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.761
Cynet Malicious (score: 100)
CAT-QuickHeal Worm.Gamarue.WR5
ALYac Gen:Variant.Zusy.116499
Cylance Unsafe
Zillya Trojan.Filecoder.Win32.305
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_60% (W)
Alibaba VirTool:Win32/Obfuscator.060558f6
K7GW Trojan ( 0055e3ef1 )
Cybereason malicious.376374
Symantec Ransom.Cryptolock!g8
ESET-NOD32 Win32/Filecoder.TorrentLocker.A
Zoner Trojan.Win32.27456
APEX Malicious
Avast Win32:Trojan-gen
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Zusy.116499
NANO-Antivirus Trojan.Win32.Encoder.djmeqs
ViRobot Trojan.Win32.Ransom.483840
MicroWorld-eScan Gen:Variant.Zusy.116499
Tencent Win32.Trojan.Filecoder.Swks
Ad-Aware Gen:Variant.Zusy.116499
Sophos ML/PE-A + Troj/Agent-AKGT
Comodo Malware@#1eex175p8rrch
BitDefenderTheta Gen:NN.ZexaE.34628.Dq0@aado1qkO
VIPRE Trojan.Win32.Generic!BT
TrendMicro Mal_Ispi-2
McAfee-GW-Edition Ransom-FQD!C35E0B437637
Emsisoft Gen:Variant.Zusy.116499 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/
Webroot W32.Crypren
Avira HEUR/AGEN.1113548
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft VirTool:Win32/Obfuscator.ALM
Arcabit Trojan.Zusy.D1C713
GData Gen:Variant.Zusy.116499
TACHYON Trojan/W32.Crypren.487424
AhnLab-V3 Trojan/Win32.Agent.C670704
Acronis suspicious
McAfee Ransom-FQD!C35E0B437637
MAX malware (ai score=99)
VBA32 Hoax.Crypren
Malwarebytes Malware.AI.3071624052
Panda Trj/Chgt.M
TrendMicro-HouseCall Mal_Ispi-2
Rising Ransom.FileCryptor!8.1A7 (CLOUD)
Yandex Trojan.GenAsa!6sQ5jAw4v7M
Ikarus Trojan-Ransom.Crypren
Fortinet W32/Injector.MMTJ!tr
AVG Win32:Trojan-gen
Qihoo-360 Win32/Trojan.Obfuscated.HwoCEpsA

How to remove VirTool:Win32/Obfuscator.ALM 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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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 VirTool:Win32/Obfuscator.ALM 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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove VirTool:Win32/Obfuscator.ALM you can always ask me in the comments for getting help.

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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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