Trojan:Win32/Ymacco.AA71

Written by Robert Bailey

What is Trojan:Win32/Ymacco.AA71 infection?

In this short article you will certainly discover regarding the interpretation of Trojan:Win32/Ymacco.AA71 as well as its adverse influence on your computer. Such ransomware are a form of malware that is elaborated by online frauds to demand paying the ransom by a sufferer.

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Most of the cases, Trojan:Win32/Ymacco.AA71 virus will instruct its victims to launch funds transfer for the objective of counteracting the changes that the Trojan infection has introduced to the victim’s device.

Trojan:Win32/Ymacco.AA71 Summary

These alterations can be as adheres to:

  • 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: Serbian;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • The executable is compressed using UPX;
  • 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 documents located on the victim’s hard disk — so the sufferer can no more utilize the information;
  • Preventing regular accessibility to the target’s workstation;
Similar behavior
Related domains
z.whorecord.xyz BehavesLike.Win32.Ransomware.rc
a.tomx.xyz BehavesLike.Win32.Ransomware.rc

Trojan:Win32/Ymacco.AA71

One of the most typical channels where Trojan:Win32/Ymacco.AA71 Ransomware Trojans are injected are:

  • By ways of phishing e-mails;
  • As an effect of individual ending up on a source that organizes a malicious software application;

As soon as the Trojan is effectively injected, it will certainly either cipher the information on the victim’s PC or avoid the gadget from working in a proper way – while additionally positioning a ransom money note that mentions the need for the victims to impact the payment for the objective of decrypting the papers or recovering the file system back to the first problem. In the majority of circumstances, the ransom note will show up when the client reboots the COMPUTER after the system has actually currently been harmed.

Trojan:Win32/Ymacco.AA71 circulation networks.

In different edges of the world, Trojan:Win32/Ymacco.AA71 grows by leaps and bounds. Nevertheless, the ransom money notes and also methods of obtaining the ransom amount may differ relying on specific local (regional) settings. The ransom notes and also tricks of obtaining the ransom quantity might vary depending on specific local (regional) setups.

Ransomware injection

As an example:

    Faulty notifies concerning unlicensed software program.

    In particular areas, the Trojans usually wrongfully report having discovered some unlicensed applications made it possible for on the target’s gadget. The sharp after that demands the individual to pay the ransom money.

    Faulty statements concerning prohibited web content.

    In nations where software application piracy is much less preferred, this approach is not as efficient for the cyber fraudulences. Conversely, the Trojan:Win32/Ymacco.AA71 popup alert might wrongly claim to be originating from a police institution as well as will report having located kid pornography or various other illegal data on the device.

    Trojan:Win32/Ymacco.AA71 popup alert might falsely claim to be acquiring from a legislation enforcement institution and also will certainly report having located child porn or other illegal data on the tool. The alert will similarly have a demand for the user to pay the ransom money.

Technical details

File Info:

crc32: A4694ADD
md5: e54795d6fe558f9803822242f39f3956
name: E54795D6FE558F9803822242F39F3956.mlw
sha1: 4110722f6d78b9506a4d8808fb57e96cd4956c9f
sha256: 7196abf724342ea7e868d6b1724f25ebf18d1562a9d46f15b32fa365a5c7f112
sha512: 68dab5c8e5f7142cdb1c74b3d15c8c1f2202eb1cc033b8ed0ce95bf8c02cc959d903623c96329482c67e0cf8f205d92dd6ca8e90026fddc000af3aeecc622ac2
ssdeep: 98304:XxMcOypNG3GJEzC1LVjJeSNz4QBJTSsOnGCfPjcdqqw1DtnP7MZ33ImVLyesmF+:eAg0EzOTJTrIxPAlzVLgral1BmhZkmj
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

InternalName: triwilbifor.occ
FileVersion: 6.26.341
Copyright: Copyrighz (C) 2020, wodkagude
ProductVersion: 1.13.21
TranslationUsa: 0x0173 0x00de

Trojan:Win32/Ymacco.AA71 also known as:

GridinSoft Trojan.Ransom.Gen
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.GenericKD.36103175
FireEye Generic.mg.e54795d6fe558f98
CAT-QuickHeal Trojan.Zenpack
McAfee Artemis!E54795D6FE55
Malwarebytes Trojan.MalPack.GS
VIPRE Trojan.Win32.Generic!BT
Sangfor Malware
K7AntiVirus Riskware ( 0040eff71 )
BitDefender Trojan.GenericKD.36103175
K7GW Riskware ( 0040eff71 )
CrowdStrike win/malicious_confidence_80% (D)
Cyren W32/Trojan.DXHE-8454
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:BotX-gen [Trj]
ClamAV Win.Packed.Fugrafa-9821776-0
Kaspersky Trojan.Win32.Eb.bnr
Alibaba Trojan:Win32/Glupteba.2579238c
AegisLab Hacktool.Win32.ArchSMS.lsxE
Ad-Aware Trojan.GenericKD.36103175
Emsisoft Trojan.GenericKD.36103175 (B)
F-Secure Heuristic.HEUR/AGEN.1122056
DrWeb Trojan.Siggen11.58296
Zillya Trojan.Eb.Win32.321
TrendMicro TROJ_GEN.R002C0WAG21
McAfee-GW-Edition BehavesLike.Win32.Ransomware.rc
Sophos Mal/Generic-S
SentinelOne Static AI – Malicious PE
Avira HEUR/AGEN.1122056
MAX malware (ai score=81)
Microsoft Trojan:Win32/Ymacco.AA71
Gridinsoft Trojan.Win32.Packed.oa
Arcabit Trojan.Generic.D226E407
ZoneAlarm Trojan.Win32.Eb.bnr
GData Trojan.GenericKD.36103175
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Kryptik.C4300033
Acronis suspicious
BitDefenderTheta Gen:NN.ZexaF.34760.@pKfauLS33eG
ALYac Trojan.GenericKD.36103175
TACHYON Trojan/W32.BrsecmonE.5060608
VBA32 BScope.Trojan.Eb
Panda Trj/RnkBend.A
ESET-NOD32 a variant of Generik.CJCOUOI
TrendMicro-HouseCall TROJ_GEN.R002C0WAG21
Tencent Win32.Trojan.Eb.Airn
Ikarus Trojan.SuspectCRC
Fortinet W32/Kryptik.HIRY!tr
Webroot W32.Trojan.Zenpack
AVG Win32:BotX-gen [Trj]
Cybereason malicious.f6d78b
Paloalto generic.ml
Qihoo-360 Win32/Trojan.331

How to remove Trojan:Win32/Ymacco.AA71 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.AA71 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.AA71 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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