Trojan:Win32/Ymacco.AA55

Written by Robert Bailey

What is Trojan:Win32/Ymacco.AA55 infection?

In this post you will find regarding the definition of Trojan:Win32/Ymacco.AA55 as well as its negative effect on your computer system. Such ransomware are a kind of malware that is specified by on-line fraudulences to require paying the ransom money by a victim.

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In the majority of the situations, Trojan:Win32/Ymacco.AA55 infection will certainly advise its victims to start funds transfer for the purpose of neutralizing the amendments that the Trojan infection has presented to the victim’s tool.

Trojan:Win32/Ymacco.AA55 Summary

These adjustments 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.
  • Possible date expiration check, exits too soon after checking local time;
  • Expresses interest in specific running processes;
  • Unconventionial language used in binary resources: Rhaeto (Romance);
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • 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 found on the victim’s hard disk drive — so the target can no longer utilize the data;
  • Preventing normal 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.AA55

One of the most common networks whereby Trojan:Win32/Ymacco.AA55 are infused are:

  • By methods of phishing emails;
  • As a consequence of individual ending up on a resource that hosts a harmful software application;

As quickly as the Trojan is effectively infused, it will certainly either cipher the information on the target’s computer or stop the gadget from working in a proper manner – while likewise placing a ransom money note that states the requirement for the sufferers to effect the payment for the objective of decrypting the documents or restoring the documents system back to the first problem. In a lot of instances, the ransom note will turn up when the client restarts the COMPUTER after the system has actually currently been damaged.

Trojan:Win32/Ymacco.AA55 distribution channels.

In different edges of the world, Trojan:Win32/Ymacco.AA55 expands by jumps and also bounds. However, the ransom notes as well as tricks of extorting the ransom amount might differ depending upon certain regional (local) setups. The ransom money notes and also techniques of extorting the ransom quantity might differ depending on certain local (regional) settings.

Ransomware injection

For instance:

    Faulty alerts about unlicensed software.

    In certain areas, the Trojans usually wrongfully report having actually found some unlicensed applications allowed on the victim’s device. The alert then requires the individual to pay the ransom money.

    Faulty declarations regarding unlawful 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.AA55 popup alert might falsely assert to be stemming from a law enforcement establishment and will certainly report having located child porn or other illegal data on the device.

    Trojan:Win32/Ymacco.AA55 popup alert may wrongly claim to be acquiring from a law enforcement organization and also will report having located youngster porn or other prohibited data on the gadget. The alert will similarly consist of a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: ACF4A899
md5: 7034f93025db422f8902d3a015b98523
name: 7034F93025DB422F8902D3A015B98523.mlw
sha1: ac61a476e525f2f8de528947c2f72a8a8207b523
sha256: 5546a470daf59869f759dde2fdc7ad3b07d01301c04239c4c67e084b62557ee8
sha512: 8dcef7cb3abb67d7573ef1a84ca9b8753815b9f718b40805c4dad0d6b68ec22cbef137b52413aeb6e198aec09a5ea2403c9879d6ef607b3dba08adceffffd2df
ssdeep: 98304:Y2/I5/OxdCl6JWnWZzxebhVdKQtBxAF3ZOwGWKO7Z02:Y2/wKjA5K6M3ZpG0
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Ymacco.AA55 also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetectVM.malware1
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.GenericKD.36209708
FireEye Generic.mg.7034f93025db422f
McAfee GenericRXNK-OH!7034F93025DB
Cylance Unsafe
AegisLab Trojan.Win32.Malicious.4!c
Sangfor Malware
K7AntiVirus Riskware ( 0040eff71 )
BitDefender Trojan.GenericKD.36209708
K7GW Riskware ( 0040eff71 )
Cybereason malicious.6e525f
Cyren W32/Trojan.URPW-7680
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:DropperX-gen [Drp]
ClamAV Win.Packed.Generickdz-9823562-0
Kaspersky HEUR:Trojan.Win32.Injuke.gen
Alibaba Trojan:Win32/Kryptik.3b94809a
Ad-Aware Trojan.GenericKD.36209708
Emsisoft Trojan.GenericKD.36209708 (B)
F-Secure Trojan.TR/AD.GoCloudnet.cuj
McAfee-GW-Edition BehavesLike.Win32.Generic.wc
Sophos Mal/Generic-S
Ikarus Trojan-Downloader.Win32.Glupteba
Avira TR/AD.GoCloudnet.cuj
MAX malware (ai score=82)
Microsoft Trojan:Win32/Ymacco.AA55
Gridinsoft Ransom.Win32.Wacatac.oa
Arcabit Trojan.Generic.D228842C
ZoneAlarm HEUR:Trojan.Win32.Injuke.gen
GData Win32.Trojan.PSE.1E3SG35
Cynet Malicious (score: 100)
AhnLab-V3 Malware/Win32.Generic.C4306037
BitDefenderTheta Gen:NN.ZexaF.34780.XtW@aC8RuJkO
ALYac Trojan.GenericKD.36209708
Malwarebytes Trojan.MalPack.GS
Panda Trj/RnkBend.A
ESET-NOD32 a variant of Win32/Kryptik.HIZH
Rising Trojan.Kryptik!1.D027 (CLASSIC)
SentinelOne Static AI – Malicious PE
eGambit Unsafe.AI_Score_71%
Fortinet PossibleThreat.PALLAS.H
Webroot W32.Trojan.Gen
AVG Win32:DropperX-gen [Drp]
Paloalto generic.ml
CrowdStrike win/malicious_confidence_100% (D)
Qihoo-360 Generic/HEUR/QVM10.2.C101.Malware.Gen

How to remove Trojan:Win32/Ymacco.AA55 ransomware?

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.

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Press “Install” button.

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Once installed, Anti-Malware will automatically run.

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Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Trojan:Win32/Ymacco.AA55 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.

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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.AA55 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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