Backdoor:Win32/Yonsole.B Virus Removal

Seeing the Backdoor:Win32/Yonsole.B malware detection usually means that your PC is in big danger. This virus can correctly be named as ransomware – virus which ciphers your files and forces you to pay for their decryption. Deleteing it requires some specific steps that must be taken as soon as possible.

Backdoor:Win32/Yonsole.B detection is a malware detection you can spectate in your system. It often appears after the provoking procedures on your PC – opening the suspicious email, clicking the advertisement in the Internet or installing the program from unreliable resources. From the instance it appears, you have a short time to take action until it begins its destructive action. And be sure – it is better not to await these harmful things.

What is Backdoor:Win32/Yonsole.B virus?

Backdoor:Win32/Yonsole.B is ransomware-type malware. It searches for the files on your disks, encrypts it, and then asks you to pay the ransom for getting the decryption key. Besides making your documents locked, this malware additionally does a ton of harm to your system. It changes the networking setups in order to stop you from reading the removal articles or downloading the antivirus. In some cases, Backdoor:Win32/Yonsole.B can also prevent the setup of anti-malware programs.

Backdoor:Win32/Yonsole.B Summary

Summarizingly, Backdoor:Win32/Yonsole.B ransomware actions in the infected system are next:

  • Sample contains Overlay data;
  • Uses Windows utilities for basic functionality;
  • Reads data out of its own binary image;
  • Unconventionial binary language: Chinese (Simplified);
  • Unconventionial language used in binary resources: Chinese (Simplified);
  • Authenticode signature is invalid;
  • Deletes executed files from disk;
  • Yara detections observed in process dumps, payloads or dropped files;
  • Ciphering the files located on the victim’s drive — so the victim cannot use these documents;
  • Blocking the launching of .exe files of anti-virus programs
  • Blocking the launching of installation files of anti-malware apps

Ransomware has been a headache for the last 4 years. It is difficult to realize a more hazardous virus for both individuals and companies. The algorithms used in Backdoor:Win32/Yonsole.B (usually, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need a lot more time than our galaxy currently exists, and possibly will exist. However, that malware does not do all these bad things immediately – it can take up to a few hours to cipher all of your documents. Therefore, seeing the Backdoor:Win32/Yonsole.B detection is a clear signal that you should begin the clearing procedure.

Where did I get the Backdoor:Win32/Yonsole.B?

Standard tactics of Backdoor:Win32/Yonsole.B injection are typical for all other ransomware variants. Those are one-day landing sites where users are offered to download and install the free program, so-called bait emails and hacktools. Bait emails are a pretty new tactic in malware spreading – you receive the email that simulates some normal notifications about deliveries or bank service conditions modifications. Within the e-mail, there is an infected MS Office file, or a web link which leads to the exploit landing page.

Malicious email spam

Malicious email message. This one tricks you to open the phishing website.

Avoiding it looks fairly simple, but still requires tons of attention. Malware can hide in various places, and it is much better to prevent it even before it goes into your system than to depend on an anti-malware program. Basic cybersecurity knowledge is just an essential item in the modern-day world, even if your relationship with a PC remains on YouTube videos. That can keep you a great deal of time and money which you would certainly spend while looking for a fix guide.

Backdoor:Win32/Yonsole.B malware technical details

File Info:

name: 7EB0422C481691863BC6.mlwpath: /opt/CAPEv2/storage/binaries/fa694eef623103b9b056a428378f4f1e8a5dcd06691a5b935f17e74ef0a457d1crc32: 74285EEAmd5: 7eb0422c481691863bc66ba9afa4f8b2sha1: 33dd279401f665b5e5d2e984654b72edce21fdc3sha256: fa694eef623103b9b056a428378f4f1e8a5dcd06691a5b935f17e74ef0a457d1sha512: 514fc065d42d4d7fef2452027a4cf74394fcd2cc6fccd12be6c9359519539111271e6a097e6ff2da5d13148bf8ee739561994ec3c2e64baa7efedf92bff0a42dssdeep: 3072:gAzGhwmMjba36cpdGop4qh05Ht71LcMqTZ+FqXs8cDNqR/nuK/ABslH0:gjwolpdGo+D5ttcx+F1rDYnz/AHtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T16434AE23B5F52D2BF9A02A751DEDFEA25E85BD40CF998A9373240FCD6B202950F10D16sha3_384: 6912fee26ed124d01dfcb24753f4992604b469b0c815185a5af78b9118405662837f0e461cb0a282f53478130fce69c5ep_bytes: 558bec6aff68f02f420068286f420064timestamp: 2011-08-03 14:32:23

Version Info:

Comments: CompanyName: Avira GmbHFileDescription: AntiVir Engine Module for WindowsFileVersion: 0, 0, 0, 0InternalName: AntiVir/Win32LegalCopyright: AntiVir? is a registered trademark of Avira GmbH, GermanyLegalTrademarks: OriginalFilename: 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)PrivateBuild: ProductName: AVVDFProductVersion: 1, 0, 0, 1001SpecialBuild: Translation: 0x0804 0x04b0

Backdoor:Win32/Yonsole.B also known as:

Bkav W32.AIDetectMalware
Lionic Trojan.Win32.Generic.4!c
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.Crypt.HI
FireEye Generic.mg.7eb0422c48169186
Skyhigh BehavesLike.Win32.Infected.dh
ALYac Trojan.Crypt.HI
Zillya Trojan.Farfli.Win32.1519
K7AntiVirus Riskware ( 0015e4f11 )
Alibaba Backdoor:Win32/Zegost.48e73772
K7GW Riskware ( 0015e4f11 )
CrowdStrike win/malicious_confidence_90% (D)
BitDefenderTheta Gen:NN.ZexaF.36744.oi1@aygWRwdb
VirIT Trojan.Win32.Agent_r.ALJ
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Farfli.FB
APEX Malicious
ClamAV Win.Malware.Genpack-9841556-0
Kaspersky Backdoor.Win32.Zegost.mtbkf
BitDefender Trojan.Crypt.HI
NANO-Antivirus Trojan.Win32.Magania.bdkzqv
Avast Win32:Agent-AQGZ [Trj]
Tencent Win32.Backdoor.Zegost.Xfow
Emsisoft Trojan.Crypt.HI (B)
F-Secure Heuristic.HEUR/AGEN.1341801
DrWeb Trojan.DownLoader4.30871
VIPRE Trojan.Crypt.HI
Trapmine malicious.moderate.ml.score
Sophos Troj/YonSole-A
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/PSW.Magania.aydl
Webroot W32.Backdoor.Gen
Google Detected
Avira HEUR/AGEN.1341801
Antiy-AVL Trojan/Win32.Unknown
Kingsoft Win32.Hack.Zegost.mtbkf
Microsoft Backdoor:Win32/Yonsole.B
Xcitium TrojWare.Win32.Farfli.fb@4km9kw
Arcabit Trojan.Crypt.HI
ZoneAlarm Backdoor.Win32.Zegost.mtbkf
GData Trojan.Crypt.HI
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Magania.R13682
McAfee GenericRXCP-AS!7EB0422C4816
MAX malware (ai score=100)
VBA32 BScope.TrojanDropper.Dinwod
Cylance unsafe
Panda Trj/Genetic.gen
Rising Trojan.Fednu!1.9928 (CLASSIC)
Yandex Trojan.Farfli!KIckj0qJJM8
Ikarus Virus.Win32.Vundo
MaxSecure not-a-virus:HEUR:AdWare.Win32.Amonetize.fp
Fortinet W32/Farfli.BVV!tr
AVG Win32:Agent-AQGZ [Trj]
Cybereason malicious.401f66
DeepInstinct MALICIOUS

How to remove Backdoor:Win32/Yonsole.B?

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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