Program:Win32/Ymacco.AA77

What is Program:Win32/Ymacco.AA77 infection?

In this post you will certainly locate about the meaning of Program:Win32/Ymacco.AA77 and also its unfavorable effect on your computer system. Such ransomware are a kind of malware that is clarified by online scams to demand paying the ransom by a victim.

Most of the instances, Program:Win32/Ymacco.AA77 ransomware will certainly instruct its sufferers to initiate funds move for the purpose of counteracting the amendments that the Trojan infection has actually introduced to the sufferer’s device.

Program:Win32/Ymacco.AA77 Summary

These adjustments can be as complies with:

  • Injection with CreateRemoteThread in a remote process;
  • Attempts to connect to a dead IP:Port (3 unique times);
  • Presents an Authenticode digital signature;
  • 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.
  • Possible date expiration check, exits too soon after checking local time;
  • 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.
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic;
  • Performs some HTTP requests;
  • A scripting utility was executed;
  • Uses Windows utilities for basic functionality;
  • Code injection with CreateRemoteThread in a remote process;
  • 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
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the documents located on the victim’s hard drive — so the sufferer can no more use the information;
  • Preventing normal accessibility to the victim’s workstation;
Similar behavior
Related domains
z.whorecord.xyz Generic.Ransom.Buhtrap.4D947393
a.tomx.xyz Generic.Ransom.Buhtrap.4D947393
geoiptool.com Generic.Ransom.Buhtrap.4D947393
www.geodatatool.com Generic.Ransom.Buhtrap.4D947393
ocsp.comodoca.com Generic.Ransom.Buhtrap.4D947393
ocsp.usertrust.com Generic.Ransom.Buhtrap.4D947393
crl.usertrust.com Generic.Ransom.Buhtrap.4D947393

Program:Win32/Ymacco.AA77

One of the most common channels whereby Program:Win32/Ymacco.AA77 Ransomware Trojans are infused are:

  • By means of phishing emails;
  • As an effect of user ending up on a source that hosts a malicious software application;

As soon as the Trojan is successfully infused, it will either cipher the information on the target’s PC or stop the device from operating in a correct manner – while likewise positioning a ransom note that discusses the need for the victims to impact the payment for the function of decrypting the papers or recovering the file system back to the first problem. In many circumstances, the ransom note will show up when the client reboots the COMPUTER after the system has already been harmed.

Program:Win32/Ymacco.AA77 distribution channels.

In numerous corners of the world, Program:Win32/Ymacco.AA77 grows by jumps as well as bounds. However, the ransom money notes and methods of extorting the ransom quantity might differ depending upon particular regional (local) setups. The ransom notes as well as tricks of extorting the ransom money amount might differ depending on specific neighborhood (local) settings.

Ransomware injection

For example:

    Faulty notifies regarding unlicensed software program.

    In particular locations, the Trojans typically wrongfully report having identified some unlicensed applications allowed on the sufferer’s device. The sharp then demands the user to pay the ransom.

    Faulty statements concerning unlawful material.

    In countries where software piracy is much less popular, this technique is not as reliable for the cyber frauds. Conversely, the Program:Win32/Ymacco.AA77 popup alert might falsely declare to be stemming from a police organization as well as will report having situated kid pornography or various other illegal data on the tool.

    Program:Win32/Ymacco.AA77 popup alert might wrongly assert to be obtaining from a legislation enforcement institution and also will certainly report having situated child porn or various other unlawful data on the tool. The alert will in a similar way include a need for the individual to pay the ransom money.

Technical details

File Info:

crc32: A18D8F97md5: 9993dc8dfabca3331e3d9b15dc10928dname: 9993DC8DFABCA3331E3D9B15DC10928D.mlwsha1: 8c529a8d526b50ddf5e2c66b591feb1f444acffesha256: 778f30d268f051802cd3b1fe3f8a4bd010f7ab3dae1dc4e6073c0b2f972effb0sha512: 907dc2d6851d9d4e628c272108f5a12b67cd547e74db40450e8141c6ff5179c858cb7021430abd8d440c220707e8a4eecc013b18bfd9f6747d8f0d2bfc3cdf0essdeep: 12288:9Y20AljdZgBPfKfY8qQxAogJfqsUsz0cX0kJ9tdr95aj:S20gPgFKA8qQxAVBbIcXj9tdZCtype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Program:Win32/Ymacco.AA77 also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Riskware ( 0040eff71 )
DrWeb Trojan.Encoder.33333
MicroWorld-eScan Generic.Ransom.Buhtrap.4D947393
ALYac Trojan.Ransom.VegaLocker
Cylance Unsafe
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Generic.29a12777
K7GW Riskware ( 0040eff71 )
Cybereason malicious.dfabca
Symantec Downloader
APEX Malicious
Avast Win32:Malware-gen
Cynet Malicious (score: 100)
Kaspersky Trojan-Ransom.Win32.Vega.an
BitDefender Generic.Ransom.Buhtrap.4D947393
NANO-Antivirus Trojan.Win32.Vega.iexzsa
Tencent Win32.Trojan.Falsesign.Hvix
Sophos Mal/Generic-S (PUA)
TrendMicro TROJ_FRS.VSNTA721
McAfee-GW-Edition RDN/Ransom
FireEye Generic.Ransom.Buhtrap.4D947393
Emsisoft Generic.Ransom.Buhtrap.4D947393 (B)
Jiangmin Trojan.Scar.roh
Avira TR/Redcap.usjri
eGambit PE.Heur.InvalidSig
Microsoft Program:Win32/Ymacco.AA77
Arcabit Generic.Ransom.Buhtrap.4D947393
AegisLab Trojan.Win32.Vega.j!c
ZoneAlarm Trojan-Ransom.Win32.Vega.an
GData Generic.Ransom.Buhtrap.4D947393
AhnLab-V3 Malware/Win32.Generic.C4293578
McAfee RDN/Ransom
MAX malware (ai score=99)
Malwarebytes Ransom.FakeSig
TrendMicro-HouseCall TROJ_FRS.VSNTA721
Ikarus Trojan.Inject
AVG Win32:Malware-gen
Paloalto generic.ml

How to remove Program:Win32/Ymacco.AA77 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 Program:Win32/Ymacco.AA77 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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