Written by Robert Bailey

What is Trojan:Win32/Dynamer!ac infection?

In this short article you will certainly locate concerning the definition of Trojan:Win32/Dynamer!ac and also its unfavorable impact on your computer. Such ransomware are a kind of malware that is elaborated by on-line scams to require paying the ransom by a target.

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Most of the instances, Trojan:Win32/Dynamer!ac ransomware will advise its victims to start funds move for the objective of reducing the effects of the modifications that the Trojan infection has introduced to the target’s tool.

Trojan:Win32/Dynamer!ac Summary

These adjustments can be as follows:

  • 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.
  • 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.

  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses Windows utilities for basic functionality;
  • Sniffs keystrokes;
  • 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
  • Ciphering the records located on the victim’s hard drive — so the sufferer can no more utilize the information;
  • Preventing normal accessibility to the victim’s workstation;
Similar behavior
Related domains Win32/Trojan.Ransom.d5c


The most typical channels through which Trojan:Win32/Dynamer!ac Ransomware are infused are:

  • By means of phishing emails;
  • As a repercussion of user ending up on a source that hosts a destructive software program;

As quickly as the Trojan is successfully injected, it will either cipher the data on the sufferer’s PC or prevent the tool from operating in a correct fashion – while additionally placing a ransom note that states the demand for the victims to effect the repayment for the objective of decrypting the documents or recovering the data system back to the preliminary condition. In most instances, the ransom money note will certainly turn up when the client restarts the COMPUTER after the system has actually currently been damaged.

Trojan:Win32/Dynamer!ac circulation networks.

In various corners of the world, Trojan:Win32/Dynamer!ac expands by leaps and bounds. Nevertheless, the ransom notes as well as techniques of obtaining the ransom amount might differ relying on certain local (regional) settings. The ransom money notes and methods of extorting the ransom money amount might vary depending on particular regional (regional) setups.

Ransomware injection

As an example:

    Faulty signals regarding unlicensed software.

    In particular locations, the Trojans often wrongfully report having actually spotted some unlicensed applications made it possible for on the target’s device. The sharp after that requires the user to pay the ransom.

    Faulty statements regarding unlawful web content.

    In nations where software program piracy is less prominent, this approach is not as efficient for the cyber scams. Additionally, the Trojan:Win32/Dynamer!ac popup alert may wrongly assert to be originating from a law enforcement organization and also will report having located child porn or various other illegal information on the device.

    Trojan:Win32/Dynamer!ac popup alert may wrongly declare to be obtaining from a law enforcement organization as well as will certainly report having located child porn or other illegal data on the tool. The alert will likewise contain a requirement for the user to pay the ransom money.

Technical details

File Info:

crc32: 153FE242
md5: d32c4f31c4acb15bf7c37b3bedb75ce2
name: D32C4F31C4ACB15BF7C37B3BEDB75CE2.mlw
sha1: 400444e05f029b3daf4921ffbe1e3c449f6c5004
sha256: dcb91c17fef6c8208ed6822affc3130f3ab91d1dc1f23e61bbc291fdef99c6b4
sha512: f8168f3aa1f9052904c7cba58c7119029043db2ccf831c2bc336f218bfa25b839b9441dfaebdcf3992fa403ca9a1c89bcc623076930093dddb4368e74e6a561b
ssdeep: 6144:NwVrZbiGi9z2WKZYQ10WHZB/YRTrweRMs:CriJ2eQuIYR43
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Dynamer!ac also known as:

GridinSoft Trojan.Ransom.Gen
Elastic malicious (high confidence)
DrWeb Trojan.DownLoader22.2975
MicroWorld-eScan Gen:Variant.Ursu.403208
McAfee Generic.adz
Cylance Unsafe
VIPRE Trojan-Dropper.MSIL.Agent.ko (v)
K7AntiVirus Trojan ( 004b8fa81 )
BitDefender Gen:Variant.Ursu.403208
K7GW Trojan ( 004b8fa81 )
Cybereason malicious.1c4acb
BitDefenderTheta Gen:NN.ZemsilF.34804.rmW@a4Cb0dh
Symantec ML.Attribute.HighConfidence
APEX Malicious
ClamAV Win.Malware.Zusy-6866357-0
Kaspersky HEUR:Trojan.MSIL.Crypt.gen
NANO-Antivirus Trojan.Win32.Dwn.eenyva
Ad-Aware Gen:Variant.Ursu.403208
Emsisoft Gen:Variant.Ursu.403208 (B)
Comodo Malware@#3i00dtinszkwo
F-Secure Trojan.TR/Dropper.MSIL.Gen
Zillya Trojan.Blocker.Win32.35378
McAfee-GW-Edition BehavesLike.Win32.Generic.dh
Sophos Mal/Generic-S
Ikarus Trojan.MSIL.Bladabindi
Jiangmin Trojan.Generic.adqdb
Avira TR/Dropper.MSIL.Gen
Antiy-AVL Trojan/Win32.AGeneric
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Trojan:Win32/Dynamer!ac
Arcabit Trojan.Ursu.D62708
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Gen:Variant.Ursu.403208
Cynet Malicious (score: 100)
AhnLab-V3 Win-Trojan/Korat.Exp
Acronis suspicious
VBA32 Hoax.Blocker
ALYac Gen:Variant.Ursu.403208
MAX malware (ai score=89)
Panda Trj/GdSda.A
ESET-NOD32 a variant of MSIL/Bladabindi.AY
Rising Backdoor.Bladabindi!8.B1F (TFE:C:LvBcn7sUzCR)
Yandex Trojan.Blocker!2iVXEEuVnXQ
SentinelOne Static AI – Malicious PE
Webroot Pua.Gen
AVG Win32:Malware-gen
Avast Win32:Malware-gen
CrowdStrike win/malicious_confidence_100% (D)
Qihoo-360 Win32/Trojan.Ransom.d5c

How to remove Trojan:Win32/Dynamer!ac ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
Reasons why I would recommend GridinSoft1

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.

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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/Dynamer!ac 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/Dynamer!ac 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

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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