Written by Robert Bailey

What is Trojan:Win32/Ymacco.AB6B infection?

In this article you will certainly find about the definition of Trojan:Win32/Ymacco.AB6B and its adverse influence on your computer. Such ransomware are a form of malware that is clarified by online scams to demand paying the ransom money by a victim.

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Most of the instances, Trojan:Win32/Ymacco.AB6B ransomware will certainly advise its sufferers to launch funds transfer for the objective of neutralizing the amendments that the Trojan infection has presented to the target’s device.

Trojan:Win32/Ymacco.AB6B Summary

These alterations can be as complies with:

  • A process attempted to delay the analysis task.;
  • 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
  • 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 files located on the victim’s hard disk drive — so the sufferer can no more make use of the information;
  • Preventing routine accessibility 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.


The most typical channels whereby Trojan:Win32/Ymacco.AB6B Ransomware Trojans are infused are:

  • By means of phishing e-mails;
  • As a repercussion of individual ending up on a source that holds a harmful software;

As soon as the Trojan is successfully injected, it will either cipher the data on the sufferer’s PC or protect against the tool from working in a correct fashion – while likewise placing a ransom money note that mentions the need for the sufferers to impact the repayment for the objective of decrypting the documents or restoring the documents system back to the first problem. In most instances, the ransom note will show up when the customer reboots the PC after the system has already been damaged.

Trojan:Win32/Ymacco.AB6B circulation networks.

In different edges of the globe, Trojan:Win32/Ymacco.AB6B expands by leaps as well as bounds. Nevertheless, the ransom notes and also methods of obtaining the ransom quantity may vary depending on specific regional (local) setups. The ransom notes as well as tricks of extorting the ransom quantity might differ depending on specific regional (local) setups.

Ransomware injection

As an example:

    Faulty informs concerning unlicensed software.

    In specific locations, the Trojans typically wrongfully report having detected some unlicensed applications made it possible for on the sufferer’s tool. The sharp after that requires the customer to pay the ransom money.

    Faulty declarations concerning unlawful content.

    In countries where software application piracy is much less popular, this technique is not as efficient for the cyber scams. Conversely, the Trojan:Win32/Ymacco.AB6B popup alert may falsely declare to be stemming from a police establishment as well as will report having situated kid pornography or various other unlawful data on the device.

    Trojan:Win32/Ymacco.AB6B popup alert might incorrectly claim to be obtaining from a legislation enforcement institution and will report having located kid porn or other illegal information on the tool. The alert will in a similar way consist of a demand for the individual to pay the ransom.

Technical details

File Info:

crc32: 4AC29464
md5: 948716bd47191c6d9488d1eb0fdaa7aa
name: 948716BD47191C6D9488D1EB0FDAA7AA.mlw
sha1: 051f460a13d8f0c3c5ce1b0d0b6c8ce6ef4b80c5
sha256: 6be7c1cd922ac0437c8b70ac6ec0b04643bd5d7952806bbd5b82506959cc33ca
sha512: 3cd2ff20555e8122daefd4487648d1936aec9f5f8f7e50a0241de3bb19a1c6989e2d4a8675f615c98761a8674290e3873fcab8218483ebdbc4301325ad4c46f8
ssdeep: 384:VRpMQHnbq6yNS56QdOKC8OtIFF/u//u3Fi:FlHtvxat+/4u
type: PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Ymacco.AB6B also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Riskware ( 0015e4f01 )
DrWeb Trojan.Winlock.146
Cynet Malicious (score: 100)
ALYac Trojan.Generic.2399589
Cylance Unsafe
Zillya Trojan.ChameleonUnlicence.Win32.58
Sangfor Trojan.Win32.Save.a
Alibaba Ransom:Win32/ChameleonUnlicence.8066dc73
K7GW Riskware ( 0015e4f01 )
Cybereason malicious.d47191
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/LockScreen.AM
APEX Malicious
Avast Win32:RansomX-gen [Ransom]
Kaspersky Trojan-Ransom.Win32.ChameleonUnlicence.r
BitDefender Trojan.Generic.2399589
NANO-Antivirus Trojan.Win32.Blocker.dcqem
ViRobot Trojan.Win32.A.ChameleonUnlicence.15360
MicroWorld-eScan Trojan.Generic.2399589
Tencent Win32.Trojan.Chameleonunlice.cegl
Ad-Aware Trojan.Generic.2399589
Comodo TrojWare.Win32.LockScreen.AM0@1rmurm
BitDefenderTheta Gen:NN.ZexaCO.34684.auW@a44ik!m
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition Artemis!Trojan
Emsisoft Trojan.Generic.2399589 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/
Webroot W32.Malware.Gen
eGambit Generic.Malware
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Trojan:Win32/Ymacco.AB6B
AegisLab Trojan.Win32.ChameleonUnlicence.j!c
GData Trojan.Generic.2399589
McAfee Artemis!948716BD4719
MAX malware (ai score=99)
VBA32 Hoax.ChameleonUnlicence
Panda Trj/Ransom.F
Rising Trojan.Win32.Generic.13761F60 (C64:YzY0OpHJt2Nz3i/f)
Ikarus Trojan.Win32.LockScreen
Fortinet W32/ChameleonUnlicence.AM!tr
AVG Win32:RansomX-gen [Ransom]

How to remove Trojan:Win32/Ymacco.AB6B 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 Trojan:Win32/Ymacco.AB6B 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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Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Trojan:Win32/Ymacco.AB6B 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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