Win32/Yandex.K — Yandex PUA Removal

Written by Robert Bailey
If you spectate the alert of Win32/Yandex.K detection, it appears that your system has a problem. All viruses are dangerous, without any deviations. Yandex unwanted application can not be called full-size malware. Nevertheless, this app collects data beyond measure. Additionally, there are a number of cases when users mention that this app acts like spyware or backdoor.

Any kind of malware exists with the only target – gain money on you. And the developers of these things are not thinking of morality – they use all available tactics. Taking your personal data, receiving the comission for the promotions you watch for them, utilizing your CPU and GPU to mine cryptocurrencies – that is not the complete list of what they do. Do you want to be a riding horse? That is a rhetorical question.

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What does the pop-up with Win32/Yandex.K detection mean?

The Win32/Yandex.K detection you can see in the lower right side is demonstrated to you by Microsoft Defender. That anti-malware program is pretty good at scanning, however, prone to be basically unreliable. It is defenseless to malware invasions, it has a glitchy user interface and problematic malware removal features. Thus, the pop-up which says about the Yandex is rather just an alert that Defender has actually recognized it. To remove it, you will likely need to make use of a separate anti-malware program.

Win32/Yandex.K found

Microsoft Defender: “Win32/Yandex.K”

Win32/Yandex.K unwanted program is a typical example of PUA, which is widespread nowadays. It collects all your data and can share it ti third parties. Some examples of this program type can have no helpful functionality – only the shell with the colorful interface. It is promoted as a all in one and can change your browser settings and switch home page and search engine to yandex. This or another way, it does not give you any actual capability, exposing you to risk instead.

Unwanted Program Summary:

NameYandex PUA
DetectionWin32/Yandex.K
DamageYandex is at least useless, or can perform various malicious actions on your PC.
Fix ToolSee If Your System Has Been Affected by Yandex exploit

Is Win32/Yandex.K dangerous?

I have already detailed that Win32/Yandex.K PUA is not as harmless as it pretends to be. The “legit and useful” program may abruptly uncover itself as a downloader trojan, spyware, backdoor, or coin miner virus. And you can never predict what to look for even from different instances of Yandex unwanted program. That still does not mean that you have to panic – probably, this unpleasant thing has not succeeded to do negative things to your PC.

The particular harm to your system may be caused not only due to the malware injection. A huge share of doubtful programs, like the Yandex app is, is just poorly designed. Possibly, their actions are rather helpful than worthless if done on particular system configurations, but not on each one. That’s how an uncomplicated system optimization application can create chaos with continuous BSODs on your system. Any interruptions to the system registry are not very safe, and they are much more risky if performed with such programs.

How did I get this virus?

It is difficult to line the sources of malware on your PC. Nowadays, things are mixed up, and spreading methods utilized by adware 5 years ago can be utilized by spyware nowadays. However, if we abstract from the exact distribution method and will think about why it has success, the explanation will be really basic – low level of cybersecurity awareness. Individuals click on promotions on weird sites, open the pop-ups they receive in their web browsers, call the “Microsoft tech support” thinking that the scary banner that states about malware is true. It is necessary to understand what is legitimate – to prevent misunderstandings when trying to figure out a virus.

Microsoft tech support scam

The example of Microsoft Tech support scam banner

Nowadays, there are two of the most common ways of malware spreading – lure emails and also injection into a hacked program. While the first one is not so easy to stay away from – you need to know a lot to recognize a fake – the second one is simple to solve: just do not utilize hacked applications. Torrent-trackers and various other providers of “free” applications (which are, in fact, paid, but with a disabled license checking) are just a giveaway point of malware. And Win32/Yandex.K is just within them.

Technical details

File Info:

crc32: 66D40CE7
md5: 511e1a8d9b95687629c36884cea69ed4
name: 511E1A8D9B95687629C36884CEA69ED4.mlw
sha1: 1ece566e9d615d8b17dc89617c6e25908c661dda
sha256: 1766255e3087e04b69eb40a0ac7469be0247dfca6dfb53cecf2ab76f5fd096d4
sha512: cc96d75a03c7c5a0b7c293e1135375a39c2e549ff6cc9d8d2a9d932077c87cca99021d22f24d833af87b7f6caf7bd7d882225376a84460bc644cc215dbe4644b
ssdeep: 49152:lqeNVZO5iBN36iiZQCu9f0BTHgXhfSUxV:0E3OwjagJ0ZgXxxxV
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright:
FileVersion: 1.2.02.3
CompanyName: vkx43enatktx435_DJ
Comments: This installation was built with Inno Setup.
ProductName: x412x43aox43dx430x442x43ax442ex414x438x434x435x436x439
ProductVersion: 1.00075153
FileDescription: x412x43aox43dx430x442x43ax442ex414x438x434x435x436x439 Setup
OriginalFileName:
Translation: 0x0000 0x04b0

Win32/Yandex.K potentially unwanted also known as:

Click to expand
GridinSoftTrojan.Ransom.Gen
K7AntiVirusAdware ( 00570af31 )
LionicTrojan.Win32.Pasnaino.b!c
DrWebProgram.VKontakteDJ.112
CynetMalicious (score: 99)
ALYacGen:Variant.Midie.84157
CrowdStrikewin/malicious_confidence_100% (D)
K7GWAdware ( 00570af31 )
CyrenW32/VKontakte.E.gen!Eldorado
SymantecRansom.Hermes!gen2
ESET-NOD32a variant of Win32/Yandex.K potentially unwanted
APEXMalicious
AvastFileRepMetagen [Malware]
KasperskyHEUR:Trojan-Dropper.Win32.Pasnaino.gen
BitDefenderGen:Variant.Midie.84157
MicroWorld-eScanGen:Variant.Midie.84157
Ad-AwareGen:Variant.Midie.84157
SophosVKontakteDJ (PUA)
VIPRETrojan.Win32.Generic!BT
McAfee-GW-EditionBehavesLike.Win32.Generic.tc
FireEyeGen:Variant.Midie.84157
EmsisoftGen:Variant.Midie.84157 (B)
AviraHEUR/AGEN.1138705
MicrosoftTrojan:Script/Phonzy.A!ml
ArcabitTrojan.Midie.D148BD
ZoneAlarmHEUR:Trojan-Dropper.Win32.Pasnaino.gen
GDataGen:Variant.Midie.84157
AhnLab-V3Malware/Win.Generic.C4498624
McAfeeArtemis!511E1A8D9B95
MAXmalware (ai score=82)
MalwarebytesAdware.RussAd
TrendMicro-HouseCallTROJ_GEN.R067H0CFM21
MaxSecureTrojan.Malware.121218.susgen
FortinetW32/VKDJ.B!tr
AVGFileRepMetagen [Malware]
Qihoo-360Win32/TrojanDropper.Generic.HyoDkQwA

How to remove the Win32/Yandex.K from my PC?

Win32/Yandex.K malware is incredibly difficult to remove manually. It stores its files in numerous locations throughout the disk, and can restore itself from one of the parts. Moreover, a number of changes in the registry, networking setups and also Group Policies are really hard to locate and return to the initial. It is far better to utilize a specific program – exactly, an anti-malware tool. GridinSoft Anti-Malware will fit the best for virus removal reasons.

Why GridinSoft Anti-Malware? It is really light-weight and has its databases updated nearly every hour. Additionally, it does not have such bugs and exposures as Microsoft Defender does. The combination of these facts makes GridinSoft Anti-Malware perfect for removing malware of any type.

Remove the viruses with GridinSoft Anti-Malware

  • Download and install GridinSoft Anti-Malware. After the installation, you will be offered to perform the Standard Scan. Approve this action.
  • Win32/Yandex.K in the scan process

  • Standard scan checks the logical disk where the system files are stored, together with the files of programs you have already installed. The scan lasts up to 6 minutes.
  • Win32/Yandex.K in the scan results

  • When the scan is over, you may choose the action for each detected virus. For all files of Yandex the default option is “Delete”. Press “Apply” to finish the malware removal.
  • Win32/Yandex.K - After Cleaning
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About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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