Trojan:Win32/Ymacco.AA8F

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is Trojan:Win32/Ymacco.AA8F infection?

In this article you will certainly find concerning the definition of Trojan:Win32/Ymacco.AA8F as well as its negative influence on your computer. Such ransomware are a kind of malware that is clarified by on-line frauds to require paying the ransom money by a victim.

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Most of the cases, Trojan:Win32/Ymacco.AA8F infection will instruct its sufferers to launch funds transfer for the objective of neutralizing the modifications that the Trojan infection has presented to the target’s device.

Trojan:Win32/Ymacco.AA8F Summary

These adjustments 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.
  • Ciphering the papers found on the victim’s hard disk drive — so the target can no more make use of the data;
  • Preventing regular accessibility to the sufferer’s workstation;
Similar behavior
Related domains
z.whorecord.xyz Trojan-Ransom.Win32.SageCrypt.fjf
a.tomx.xyz Trojan-Ransom.Win32.SageCrypt.fjf

Trojan:Win32/Ymacco.AA8F

The most typical networks where Trojan:Win32/Ymacco.AA8F Ransomware are infused are:

  • By ways of phishing e-mails;
  • As a repercussion of individual ending up on a source that hosts a harmful software program;

As quickly as the Trojan is successfully injected, it will either cipher the data on the target’s computer or avoid the tool from operating in a proper way – while likewise positioning a ransom note that states the need for the sufferers to effect the payment for the objective of decrypting the records or recovering the file system back to the initial condition. In a lot of instances, the ransom money note will certainly turn up when the customer restarts the PC after the system has actually already been harmed.

Trojan:Win32/Ymacco.AA8F circulation networks.

In numerous corners of the globe, Trojan:Win32/Ymacco.AA8F grows by leaps and also bounds. Nevertheless, the ransom money notes and techniques of extorting the ransom money amount might vary depending on specific local (regional) setups. The ransom notes and also tricks of obtaining the ransom quantity may vary depending on certain regional (regional) setups.

Ransomware injection

For example:

    Faulty alerts regarding unlicensed software program.

    In certain areas, the Trojans frequently wrongfully report having actually spotted some unlicensed applications made it possible for on the victim’s gadget. The sharp then demands the customer to pay the ransom money.

    Faulty declarations about illegal web content.

    In countries where software application piracy is much less preferred, this technique is not as efficient for the cyber scams. Alternatively, the Trojan:Win32/Ymacco.AA8F popup alert may falsely claim to be deriving from a law enforcement organization as well as will certainly report having located child porn or various other illegal information on the device.

    Trojan:Win32/Ymacco.AA8F popup alert may wrongly claim to be obtaining from a law enforcement organization as well as will report having located youngster porn or other unlawful information on the gadget. The alert will in a similar way contain a demand for the individual to pay the ransom money.

Technical details

File Info:

crc32: 6D8D0442
md5: d7fa5774c8c121416cbd754260924a8e
name: upload_file
sha1: 5cd75d2dcebc6d0927119bdd9bcc7db170b38c6a
sha256: 8fecf056f3580282cdb101c01e354425f208656fb7e5c5dcad19c64a62197184
sha512: ca97522b866fa868cfc696871a300c3fd78a458f5c54feece741d8e5c4be00bac523914957ef0fa24df1af50f64c011dc76d286d8b770583c0671c5d3936726a
ssdeep: 6144:bE0CpM+b1QjWDMm07s73QLwxnPFEy8WxH5rOcJhcsGxmjw4Y2/cmpJcbTetIJKv7:T7s73r0W95rgx6w4DITHKvu8iw
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Ymacco.AA8F also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetectVM.malware1
MicroWorld-eScan Trojan.GenericKD.34249942
FireEye Generic.mg.d7fa5774c8c12141
Qihoo-360 Trojan.Generic
McAfee Artemis!D7FA5774C8C1
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
BitDefender Trojan.GenericKD.34249942
K7GW Trojan ( 0051dca71 )
Cybereason malicious.dcebc6
Invincea heuristic
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:Evo-gen [Susp]
GData Trojan.GenericKD.34249942
Kaspersky Trojan-Ransom.Win32.SageCrypt.fjf
Alibaba Trojan:Win32/GenKryptik.6aa7edae
AegisLab Trojan.Win32.Malicious.4!c
Rising Trojan.GenKryptik!8.AA55 (CLOUD)
Endgame malicious (high confidence)
TACHYON Ransom/W32.SageCrypt.415744
F-Secure Heuristic.HEUR/AGEN.1113069
DrWeb Trojan.Encoder.10180
TrendMicro Ransom_MILICRY.GQQ
Trapmine malicious.high.ml.score
Emsisoft Trojan.GenericKD.34249942 (B)
Ikarus Trojan.Win32.Krypt
Jiangmin Trojan.Deshacop.vc
Avira HEUR/AGEN.1113069
Antiy-AVL Trojan/Win32.Deshacop
Microsoft Trojan:Win32/Ymacco.AA8F
Arcabit Trojan.Generic.D20A9CD6
ZoneAlarm Trojan-Ransom.Win32.SageCrypt.fjf
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.SageCrypt.C2247898
Acronis suspicious
ALYac Trojan.GenericKD.34249942
MAX malware (ai score=84)
Ad-Aware Trojan.GenericKD.34249942
ESET-NOD32 a variant of Win32/GenKryptik.ACKJ
TrendMicro-HouseCall Ransom_MILICRY.GQQ
Tencent Malware.Win32.Gencirc.114ad076
Yandex Trojan.Deshacop!
SentinelOne DFI – Suspicious PE
eGambit Unsafe.AI_Score_94%
Fortinet W32/Generic.AC.3EE7F5!tr
BitDefenderTheta Gen:NN.ZexaF.34138.zGW@aqjefBfi
AVG FileRepMalware
Paloalto generic.ml
CrowdStrike win/malicious_confidence_100% (W)

How to remove Trojan:Win32/Ymacco.AA8F 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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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.AA8F 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.AA8F 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/comparison

About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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