Trojan:Win32/Ymacco.AA5B

What is Trojan:Win32/Ymacco.AA5B infection?

In this short article you will discover regarding the interpretation of Trojan:Win32/Ymacco.AA5B as well as its negative effect on your computer. Such ransomware are a kind of malware that is specified by online scams to demand paying the ransom money by a victim.

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Most of the cases, Trojan:Win32/Ymacco.AA5B ransomware will advise its targets to launch funds transfer for the purpose of neutralizing the amendments that the Trojan infection has introduced to the victim’s device.

Trojan:Win32/Ymacco.AA5B Summary

These modifications 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.
  • Compression (or decompression);
  • Enumerates user accounts on the system;
  • 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.
  • A process attempted to delay the analysis task.;
  • 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.

  • Attempts to modify desktop wallpaper;
  • Exhibits behavior characteristic of Cerber ransomware;
  • Attempts to execute a binary from a dead or sinkholed URL;
  • 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.
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Attempts to access Bitcoin/ALTCoin wallets;
  • 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 records found on the sufferer’s hard disk drive — so the sufferer can no longer make use of the information;
  • Preventing regular accessibility to the victim’s workstation;

Trojan:Win32/Ymacco.AA5B

The most common channels whereby Trojan:Win32/Ymacco.AA5B are infused are:

  • By means of phishing e-mails;
  • As a repercussion of individual winding up on a resource that holds a harmful software;

As soon as the Trojan is efficiently infused, it will certainly either cipher the data on the sufferer’s computer or protect against the gadget from operating in an appropriate fashion – while likewise putting a ransom money note that mentions the demand for the victims to effect the settlement for the function of decrypting the documents or restoring the file system back to the initial condition. In many circumstances, the ransom money note will certainly come up when the customer restarts the COMPUTER after the system has already been damaged.

Trojan:Win32/Ymacco.AA5B distribution channels.

In various corners of the globe, Trojan:Win32/Ymacco.AA5B expands by jumps as well as bounds. Nevertheless, the ransom money notes and techniques of obtaining the ransom amount may differ depending on certain regional (regional) settings. The ransom notes and techniques of obtaining the ransom money amount may differ depending on certain neighborhood (local) setups.

Ransomware injection

As an example:

    Faulty signals about unlicensed software program.

    In specific areas, the Trojans commonly wrongfully report having discovered some unlicensed applications enabled on the sufferer’s gadget. The alert after that requires the individual to pay the ransom money.

    Faulty statements concerning prohibited material.

    In countries where software piracy is less popular, this method is not as effective for the cyber scams. Conversely, the Trojan:Win32/Ymacco.AA5B popup alert might wrongly claim to be stemming from a law enforcement establishment as well as will certainly report having situated child pornography or various other prohibited data on the device.

    Trojan:Win32/Ymacco.AA5B popup alert may falsely claim to be deriving from a regulation enforcement institution and will certainly report having located child pornography or other illegal data on the device. The alert will likewise include a need for the customer to pay the ransom.

Technical details

File Info:

crc32: D5E0A980
md5: a913efa4b1c416285fe0e6dce71f0044
name: A913EFA4B1C416285FE0E6DCE71F0044.mlw
sha1: 4c06775a95c2e6f19ecaa985fbc2ea10c3b97a45
sha256: 5bba0feb13e254a9883f220faf84dea15c929df330b25f0e76d36c17ccf07ca7
sha512: b19c97b6fb30c5443d0df9e061abd658f2dc0e94bf58c9f9ff719b7ce2ffc761f3eb81bc6a9185b3de3956fee9e7af7fb3f4ebf4e85455c353a586aac93de698
ssdeep: 6144:jGC7W7BU9pVgmFsWNMv1lhksMeNm5gwz6O5MUct1jxINdFUsWNMG:Ba7gMDv1Lc5gwJTctbIHlG
type: PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive

Version Info:

0: [No Data]

Trojan:Win32/Ymacco.AA5B also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 00503d011 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.4691
Cynet Malicious (score: 100)
ALYac Trojan.Ransom.Cerber.ZR
Cylance Unsafe
Sangfor Ransom.Win32.Zerber.gen
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Trojan:Win32/Injector.0678ceb6
K7GW Trojan ( 00503d011 )
Cybereason malicious.4b1c41
Symantec Ransom.Cerber
ESET-NOD32 NSIS/Injector.SJ
APEX Malicious
Avast Win32:Trojan-gen
ClamAV Win.Ransomware.Cerber-9168474-0
Kaspersky HEUR:Trojan-Ransom.Win32.Zerber.gen
BitDefender Trojan.Ransom.Cerber.ZR
NANO-Antivirus Trojan.Nsis.Zerber.elfdwn
ViRobot Trojan.Win32.C.Agent.288687.H
SUPERAntiSpyware Ransom.Cerber/Variant
MicroWorld-eScan Trojan.Ransom.Cerber.ZR
Tencent Win32.Trojan.Raas.Auto
Ad-Aware Trojan.Ransom.Cerber.ZR
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_Zerber.R002C0OB721
McAfee-GW-Edition BehavesLike.Win32.ObfusRansom.dc
FireEye Generic.mg.a913efa4b1c41628
Emsisoft Trojan.Ransom.Cerber.ZR (B)
SentinelOne Static AI – Suspicious PE
Avira HEUR/AGEN.1102531
Microsoft Trojan:Win32/Ymacco.AA5B
AegisLab Trojan.Win32.Zerber.j!c
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Trojan.Ransom.Cerber.ZR
AhnLab-V3 Trojan/Win32.Cerber.R194466
McAfee Artemis!A913EFA4B1C4
MAX malware (ai score=100)
VBA32 Hoax.Zerber
Malwarebytes Malware.AI.1796488274
Panda Trj/CI.A
TrendMicro-HouseCall Ransom_Zerber.R002C0OB721
Ikarus Trojan.NSIS.Injector
Fortinet W32/Injector.TD!tr
AVG Win32:Trojan-gen
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Cerber.HyoDH4oA

How to remove Trojan:Win32/Ymacco.AA5B 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

There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft2.

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.AA5B 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.AA5B 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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