Trojan:Win32/Ymacco.AA41

What is Trojan:Win32/Ymacco.AA41 infection?

In this post you will certainly discover concerning the interpretation of Trojan:Win32/Ymacco.AA41 as well as its unfavorable influence on your computer system. Such ransomware are a type of malware that is elaborated by on the internet fraudulences to demand paying the ransom by a victim.

Most of the situations, Trojan:Win32/Ymacco.AA41 virus will certainly instruct its victims to start funds move for the function of reducing the effects of the changes that the Trojan infection has actually presented to the sufferer’s device.

Trojan:Win32/Ymacco.AA41 Summary

These alterations can be as complies with:

  • 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.
  • Detected script timer window indicative of sleep style evasion;
  • 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;
  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • A scripting utility was executed;
  • Uses Windows utilities for basic functionality;
  • Deletes its original binary from disk;
  • 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
  • Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Creates a copy of itself;
  • Collects information to fingerprint the system. There are behavioral human characteristics that can be used to digitally identify a person to grant access to systems, devices, or data. Unlike passwords and verification codes, fingerprints are fundamental parts of user’s identities. Among the threats blocked on biometric data processing and storage systems is spyware, the malware used in phishing attacks (mostly spyware downloaders and droppers), ransomware, and Banking Trojans as posing the greatest danger.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files located on the sufferer’s hard drive — so the target can no more make use of the data;
  • Preventing routine 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.
Similar behavior
Related domains
z.whorecord.xyz Trojan-Ransom.Win32.SageCrypt.fjo
a.tomx.xyz Trojan-Ransom.Win32.SageCrypt.fjo

Trojan:Win32/Ymacco.AA41

One of the most typical channels where Trojan:Win32/Ymacco.AA41 Ransomware Trojans are injected are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As an effect of customer winding up on a source that hosts a harmful software program;

As quickly as the Trojan is efficiently infused, it will certainly either cipher the data on the sufferer’s PC or avoid the device from working in a proper manner – while likewise putting a ransom note that states the demand for the victims to effect the settlement for the objective of decrypting the records or bring back the data system back to the initial condition. In a lot of instances, the ransom money note will show up when the customer reboots the COMPUTER after the system has already been damaged.

Trojan:Win32/Ymacco.AA41 circulation channels.

In various edges of the world, Trojan:Win32/Ymacco.AA41 grows by leaps and bounds. Nevertheless, the ransom money notes and tricks of extorting the ransom money quantity may differ depending on specific neighborhood (local) settings. The ransom money notes as well as techniques of obtaining the ransom amount may differ depending on specific neighborhood (regional) settings.

Ransomware injection

As an example:

    Faulty signals about unlicensed software.

    In certain locations, the Trojans commonly wrongfully report having actually identified some unlicensed applications made it possible for on the victim’s tool. The sharp then demands the individual to pay the ransom.

    Faulty declarations concerning prohibited material.

    In countries where software application piracy is much less preferred, this method is not as reliable for the cyber scams. Conversely, the Trojan:Win32/Ymacco.AA41 popup alert might wrongly claim to be originating from a police organization and will certainly report having situated kid pornography or other illegal data on the gadget.

    Trojan:Win32/Ymacco.AA41 popup alert might wrongly claim to be obtaining from a law enforcement establishment and also will certainly report having located kid porn or various other illegal information on the tool. The alert will in a similar way have a demand for the individual to pay the ransom money.

Technical details

File Info:

crc32: 7ED99207md5: b7ce67956662c89700c91291b11583e6name: upload_filesha1: a797541689aba3c49c467af764d75b586b8b4af5sha256: 41ad22e98d897261ae57cd021c5dd9fbbc09f1fb39765e0d1b68a78625840555sha512: 3a64c474f65afb8478b85ab3d9bc96e537acbfd3d16bc18cd17579929108762577f0d515a656abf227993b73462d8ce7a55a3e6271b3ecd13183cebe7d6a428assdeep: 6144:I2EDYH4aaPx2v909HPNvg/7K4GHTOmQcdKsXv5o7bKSMwaM0hY:dV5l09lg/7HGqm50sXv5gKSMwaM0hYtype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Ymacco.AA41 also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetectVM.malware1
Cynet Malicious (score: 100)
FireEye Generic.mg.b7ce67956662c897
McAfee Artemis!B7CE67956662
Cylance Unsafe
Zillya Trojan.SageCrypt.Win32.204
AegisLab Trojan.Win32.Malicious.4!c
Sangfor Malware
CrowdStrike win/malicious_confidence_100% (W)
BitDefender Trojan.GenericKD.43557493
K7GW Trojan ( 0050b2d01 )
K7AntiVirus Trojan ( 0050b2d01 )
TrendMicro Mal_MiliCry-2t
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:Trojan-gen
GData Trojan.GenericKD.43557493
Kaspersky Trojan-Ransom.Win32.SageCrypt.fjo
Alibaba Ransom:Win32/generic.ali2000010
MicroWorld-eScan Trojan.GenericKD.43557493
Rising Stealer.Delf!8.415 (CLOUD)
Endgame malicious (high confidence)
Emsisoft Trojan.GenericKD.43557493 (B)
F-Secure Heuristic.HEUR/AGEN.1115437
DrWeb Trojan.Encoder.32240
VIPRE Trojan.Win32.Generic!BT
Invincea heuristic
Trapmine malicious.high.ml.score
Sophos Mal/Generic-S
Ikarus Trojan.Win32.Crypt
Jiangmin Trojan.SageCrypt.gg
Avira HEUR/AGEN.1115437
MAX malware (ai score=89)
Antiy-AVL Trojan[Ransom]/Win32.SageCrypt
Arcabit Trojan.Generic.D298A275
ZoneAlarm Trojan-Ransom.Win32.SageCrypt.fjo
Microsoft Trojan:Win32/Ymacco.AA41
AhnLab-V3 Trojan/Win32.Kryptik.R346410
Acronis suspicious
VBA32 Hoax.SageCrypt
ALYac Trojan.GenericKD.43557493
TACHYON Ransom/W32.SageCrypt.416256
Ad-Aware Trojan.GenericKD.43557493
Panda Trj/CI.A
ESET-NOD32 a variant of Win32/Kryptik.GPRG
TrendMicro-HouseCall Mal_MiliCry-2t
Tencent Malware.Win32.Gencirc.10bbe17d
SentinelOne DFI – Suspicious PE
eGambit Unsafe.AI_Score_99%
Fortinet W32/Kryptik.GPRG!tr
BitDefenderTheta Gen:NN.ZexaF.34142.zOW@aKOZYNni
AVG Win32:Trojan-gen
Cybereason malicious.56662c
Paloalto generic.ml
Qihoo-360 HEUR/QVM10.1.6284.Malware.Gen

How to remove Trojan:Win32/Ymacco.AA41 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.AA41 you can always ask me in the comments for getting 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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