Trojan:Win32/Ymacco.AADC Virus Removal (Ymacco Trojan)

What is Ymacco Trojan Virus?

Trojan:Win32/Ymacco.AADCis designed to infiltrate a victim’s computer system and steal sensitive information, particularly login credentials and passwords. Once it infects a system, Ymacco can monitor the user’s online activities, record keystrokes, and capture login details to gain unauthorized access to various online accounts, including social media, email, banking, and more.

Ymacco trojan can spread through various methods, such as malicious email attachments, compromised websites, or software downloads from untrusted sources. It may also use social engineering tactics to trick users into installing the malware themselves, disguising as a legitimate application or file.

Since cyber threats like Ymacco trojan can evolve rapidly, it’s essential to keep your antivirus software up to date and practice safe browsing habits to avoid falling victim to such threats. Regularly scanning your system for malware, using strong and unique passwords, and being cautious of suspicious emails and websites can help protect your computer from trojans like Ymacco and other types of malware.

Today, Windows Defender found a PUP in the C:/Windows/Temp folder, and it can’t remove it. When I press the start action button, remove or quarantine button, the tab refreshes, and nothing happens (it sometimes says that manual action is needed, but again, when I press the button, nothing happens). I scanned my PC with Malwarebytes Anti-Malware Premium(Trial), Rkill, Adwcleaner, JRT, MBAR, Eset Online Scanner, Hitman Pro, NPE, and I even got ESET Smart Security Premium!! The other programs didn’t find anything, but windows defender still detects it and does nothing. Trojan name (Windows Defender): Win32/Ymacco.AADC
forum user

Trojan:Win32/Ymacco.AADC Summary

The changes done by this virus are:

  • Editing the Group Policies in order to disable the Microsoft Defender
  • Editing the registry key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Dnscache;
  • Adding its own registry key to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run.
Similar behavior
Related domains
z.whorecord.xyz Trojan.Ransom.GenericKD.33961951
a.tomx.xyz Trojan.Ransom.GenericKD.33961951

Trojan:Win32/Ymacco.AADC distribution ways

The most common channels through which Trojan:Win32/Ymacco Trojans are injected are:

  • Malvertising in the Internet;
  • E-mail spamming; the virus is hidden inside of the attached item
  • Software bundles, i.e. situations when there is several programs distributed as a single one, without the primary notifying the user.

To avoid the Ymacco.AADC penetration into your computer, be very careful while browsing the dubious websites and installing the programs you got from them. These sites often have no HTTPS certificate and also have a lot of blinking ads with questionable content. E-mail spamming is harder to avoid. However, it is easier to check if the sender is really a person he introduced as.

Trojan:Win32/Ymacco.AADC visible effects.

After the successful injection into the system, Trojan:Win32/Ymacco.AADC virus makes your system more vulnerable to malware attacks. First of all, it adds itself into HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run registry hive, which allows it to load together with the system. Then, Group Policy changes are done. That step is targeted on the Microsoft Defender, which can be disabled in such away. Finally, Ymacco.AADC downloads other viruses that are stored on the server, which malware distributors handle.

Ransomware injection

Possible visible signs of virus presence are next:

  • Spontaneouly appearing console windows, which disappear in less than a second;
  • Performance plummence;
  • High CPU/RAM load, strange processes in the Task Manager.

Technical details

File Info:

crc32: 89031271md5: 23e7e8bddbf8e7cca793bec406ec9088name: injector_v3.sfx.exesha1: b16243cf9c046a160d254776659ae975d043509dsha256: ec1219ac45929d41e0c4ae31603fa00bf42db1ae64456c2c3f9d01bd90a446f9sha512: 87a9ae4490774e2a883e676b32fd24719e83ce4e7c2ad7d5a3e4bf127a8fad2b84c30daca80d4c26b00687abf0a58ee32bc013f64c1693790106ee616e0a5d86ssdeep: 12288:0Qnk3GDYKGcblwtX+t4Y8EHTUFxCLthfdG:IAOcZwXYxHTUFoLtxdGtype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Ymacco.AADC also known as:

MicroWorld-eScan Trojan.Ransom.GenericKD.33961951
FireEye Generic.mg.23e7e8bddbf8e7cc
CAT-QuickHeal Trojanransom.Encoder
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
AegisLab Trojan.Win32.Encoder.j!c
K7AntiVirus Trojan ( 004fbb2b1 )
BitDefender Trojan.Ransom.GenericKD.33961951
K7GW Trojan ( 004fbb2b1 )
CrowdStrike win/malicious_confidence_70% (W)
Symantec Trojan.Gen.MBT
APEX Malicious
Avast Win32:Trojan-gen
GData Trojan.Ransom.GenericKD.33961951
Kaspersky Trojan-Ransom.Win32.Encoder.jbu
Alibaba Trojan:BAT/KillFiles.da434272
Sophos Mal/Generic-S
Comodo Malware@#1cs8few0815nm
F-Secure Trojan.TR/BAT.Agent.vifap
Zillya Trojan.Agent.Win32.1289947
Invincea heuristic
McAfee-GW-Edition BehavesLike.Win32.Backdoor.gc
Emsisoft Trojan.Ransom.GenericKD.33961951 (B)
Ikarus Trojan.BAT.KillFiles
Cyren BAT/KillFil.BQ
Avira TR/BAT.Agent.vifap
MAX malware (ai score=83)
Microsoft Trojan:Win32/Ymacco.AADC
Arcabit Trojan.Ransom.Generic.D20637DF
ZoneAlarm Trojan-Ransom.Win32.Encoder.jbu
ALYac Trojan.Ransom.GenericKD.33961951
Ad-Aware Trojan.Ransom.GenericKD.33961951
Malwarebytes Trojan.KillFiles.BAT
ESET-NOD32 BAT/KillFiles.NKC
Tencent Win32.Trojan.Encoder.Hsix
Fortinet BAT/KillFiles.NKB!tr
AVG Win32:Trojan-gen
Cybereason malicious.ddbf8e
Paloalto generic.ml
Qihoo-360 Win32/Trojan.Ransom.1ad

How to remove Trojan:Win32/Ymacco.AADC virus?

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

Run the setup file.

Run Setup.exe
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 Scanning

Click on “Clean Now”.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

Full version of GridinSoft

If the guide doesn’t help you to remove Trojan:Win32/Ymacco.AADC you can always ask me in the comments to get help.

References

    About the author

    Robert Bailey

    Security engineer focused on malware behavior, removal workflows, and Windows hardening. Robert reviews threat articles for practical accuracy, checking detection names, symptoms, and cleanup steps before publication.

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