Trojan:Win32/Ymacco.AA8C

Written by Robert Bailey

What is Trojan:Win32/Ymacco.AA8C infection?

In this post you will discover concerning the interpretation of Trojan:Win32/Ymacco.AA8C and also its adverse influence on your computer system. Such ransomware are a type of malware that is specified by on the internet scams to demand paying the ransom by a target.

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In the majority of the instances, Trojan:Win32/Ymacco.AA8C infection will certainly advise its targets to initiate funds transfer for the function of counteracting the modifications that the Trojan infection has introduced to the victim’s tool.

Trojan:Win32/Ymacco.AA8C Summary

These alterations 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.
  • A process attempted to delay the analysis task.;
  • Expresses interest in specific running processes;
  • Attempts to stop active services;
  • 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
  • Exhibits possible ransomware file modification behavior;
  • 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.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files situated on the target’s hard drive — so the victim can no more make use of the information;
  • Preventing regular 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.

Trojan:Win32/Ymacco.AA8C

One of the most normal channels through which Trojan:Win32/Ymacco.AA8C Ransomware Trojans are infused are:

  • By means of phishing e-mails;
  • As a consequence of individual winding up on a resource that hosts a destructive software application;

As soon as the Trojan is effectively injected, it will certainly either cipher the data on the victim’s PC or avoid the device from working in a correct manner – while also positioning a ransom note that states the need for the sufferers to impact the settlement for the objective of decrypting the records or restoring the documents system back to the preliminary condition. In most instances, the ransom note will certainly come up when the client restarts the PC after the system has actually currently been damaged.

Trojan:Win32/Ymacco.AA8C distribution channels.

In different edges of the world, Trojan:Win32/Ymacco.AA8C grows by leaps and also bounds. Nevertheless, the ransom money notes and also methods of extorting the ransom quantity may vary relying on particular neighborhood (local) setups. The ransom notes as well as methods of extorting the ransom quantity might vary depending on particular neighborhood (local) setups.

Ransomware injection

For example:

    Faulty informs regarding unlicensed software.

    In certain locations, the Trojans often wrongfully report having identified some unlicensed applications allowed on the sufferer’s gadget. The alert after that demands the individual to pay the ransom.

    Faulty statements regarding illegal content.

    In countries where software program piracy is much less preferred, this approach is not as effective for the cyber frauds. Alternatively, the Trojan:Win32/Ymacco.AA8C popup alert might incorrectly assert to be stemming from a police establishment as well as will report having situated child porn or various other unlawful data on the device.

    Trojan:Win32/Ymacco.AA8C popup alert might wrongly claim to be acquiring from a legislation enforcement organization and will certainly report having located youngster porn or various other prohibited data on the gadget. The alert will likewise contain a need for the customer to pay the ransom money.

Technical details

File Info:

crc32: 68C3E6D6
md5: f0db9243fdd14d4755f5b12860d0394d
name: F0DB9243FDD14D4755F5B12860D0394D.mlw
sha1: ff1b6fc9398035917e232352fbfae8db7805b5ca
sha256: 8c716101e118ac65d7bdb900e0100d012256abb1d7cdf64830e5943a795ccce2
sha512: 824b21d96fa8ccdad18a8af1aa2dd234fb8c8487a6f81d9b98bdd4108c1ccfd28042b4c3f8bef9a74fadbc22853cc027ee4601f30928fd4ad611f2a38562e96e
ssdeep: 6144:fXiv1aIZYXtOQ/6Xhs7L5k28L7JLbK8x1+AL98+YjnEg4j6ljW10UjAf6I0Dxcy:fXw9zrK/6Rus++Yjo0wAfCVb
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright xa9 2005-2015 Lonehelp Stayoperate
InternalName: w.exe
FileVersion: 5.8.96.20
CompanyName: www.spreadPoppoint.com
LegalTrademarks: Square Problem old She
Comments: Desertsubtract str practice
ProductName: Square Problem old She
ProductVersion: 5.8.96.20
FileDescription: Square Problem old She
OriginalFilename: w.exe
Translation: 0x0000 0x04b0

Trojan:Win32/Ymacco.AA8C also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetectVM.malware1
MicroWorld-eScan Trojan.GenericKD.44448381
CAT-QuickHeal Trojan.Multi
Qihoo-360 Generic/HEUR/QVM09.0.347B.Malware.Gen
ALYac Trojan.Ransom.Sodinokibi
Cylance Unsafe
Zillya Trojan.Sodin.Win32.190
Sangfor Malware
Alibaba Ransom:Win32/generic.ali2000010
Invincea Mal/Generic-S
Cyren W32/Trojan.IHZQ-1277
Symantec ML.Attribute.HighConfidence
APEX Malicious
Kaspersky HEUR:Trojan-Ransom.Win32.Sodin.gen
BitDefender Trojan.GenericKD.44448381
ViRobot Trojan.Win32.Z.Sodin.614400
Rising Trojan.Generic@ML.93 (RDMK:4Yo1KJPp+4Fb0u1Xii/UcA)
Ad-Aware Trojan.GenericKD.44448381
Emsisoft Trojan.GenericKD.44448381 (B)
Comodo Malware@#17mzd2268q8d7
F-Secure Trojan.TR/Redcap.cxwyo
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.MultiPlug.jh
Sophos Mal/Generic-S
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Sodin.bl
Webroot W32.Trojan.GenKD
Avira TR/Redcap.cxwyo
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Trojan:Win32/Ymacco.AA8C
Gridinsoft Ransom.Win32.Ransom.oa
AegisLab Trojan.Win32.Sodin.j!c
ZoneAlarm HEUR:Trojan-Ransom.Win32.Sodin.gen
GData Trojan.GenericKD.44448381
Cynet Malicious (score: 100)
McAfee Artemis!F0DB9243FDD1
VBA32 TrojanRansom.Sodin
Malwarebytes Ransom.Sodinokibi
ESET-NOD32 a variant of Generik.MNGRWBQ
TrendMicro-HouseCall Ransom_Sodin.R011C0WKD20
Yandex Trojan.Agent!nUK2WKqA6yQ
MAX malware (ai score=100)
eGambit Unsafe.AI_Score_94%
Fortinet W32/Sodin.MNGRWBQ!tr.ransom
AVG FileRepMalware
Panda Trj/GdSda.A
CrowdStrike win/malicious_confidence_100% (W)

How to remove Trojan:Win32/Ymacco.AA8C 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

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.

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.AA8C 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/Ymacco.AA8C 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/products/

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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