Trojan:Win32/Killav!rfn

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is Trojan:Win32/Killav!rfn infection?

In this post you will certainly discover regarding the interpretation of Trojan:Win32/Killav!rfn as well as its unfavorable influence on your computer system. Such ransomware are a form of malware that is specified by on the internet scams to require paying the ransom money by a victim.

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In the majority of the cases, Trojan:Win32/Killav!rfn infection will certainly advise its targets to start funds move for the function of neutralizing the amendments that the Trojan infection has presented to the target’s tool.

Trojan:Win32/Killav!rfn Summary

These alterations can be as complies with:

  • Injection (inter-process);
  • Injection (Process Hollowing);
  • Presents an Authenticode digital signature;
  • 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;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Executed a process and injected code into it, probably while unpacking;
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records situated on the target’s disk drive — so the sufferer can no longer make use of the information;
  • Preventing normal access to the sufferer’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/Killav!rfn

One of the most common channels through which Trojan:Win32/Killav!rfn Trojans are injected are:

  • By methods of phishing emails;
  • As a consequence of individual winding up on a resource that hosts a destructive software program;

As quickly as the Trojan is efficiently injected, it will certainly either cipher the information on the target’s PC or prevent the gadget from working in a proper way – while also positioning a ransom note that states the demand for the victims to impact the payment for the objective of decrypting the papers or bring back the file system back to the preliminary condition. In a lot of instances, the ransom money note will show up when the customer restarts the COMPUTER after the system has already been harmed.

Trojan:Win32/Killav!rfn circulation channels.

In various corners of the globe, Trojan:Win32/Killav!rfn grows by jumps and bounds. However, the ransom notes and also methods of obtaining the ransom amount may vary relying on particular local (local) setups. The ransom notes as well as methods of obtaining the ransom amount might vary depending on particular regional (regional) settings.

Ransomware injection

For instance:

    Faulty alerts regarding unlicensed software application.

    In certain locations, the Trojans commonly wrongfully report having actually discovered some unlicensed applications enabled on the sufferer’s gadget. The sharp after that requires the customer to pay the ransom money.

    Faulty statements regarding prohibited content.

    In nations where software piracy is less preferred, this approach is not as reliable for the cyber frauds. Alternatively, the Trojan:Win32/Killav!rfn popup alert might incorrectly declare to be originating from a police institution as well as will certainly report having situated youngster porn or other unlawful information on the device.

    Trojan:Win32/Killav!rfn popup alert may falsely declare to be acquiring from a regulation enforcement organization and will report having situated youngster pornography or various other unlawful information on the gadget. The alert will likewise consist of a need for the user to pay the ransom.

Technical details

File Info:

crc32: 4D382AF9
md5: 06cb01fc793495650e496b83ff3e57a5
name: 06CB01FC793495650E496B83FF3E57A5.mlw
sha1: bea9419da0a18180de2fc89a23baa86a36e024f6
sha256: 76b7761b0208326b33ad171953f37e19dc35c718a5f8b2c8cb59c8d8df7e952e
sha512: 66ae94996d8a732920d8aae3f90fcc9fc5550bab59d0c5a592d664b337fe8580a32c9a2ff90edc2c543d72d312fb70013c5e303f097b91c21e1e4644da6f99fe
ssdeep: 3072:qXJCFRSt63wPwWYhVTjJ5cHymR7w0YmS8O:LdnWYD95z4w0Dt
type: PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Killav!rfn also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
DrWebWin32.HLLW.Autoruner1.24454
MicroWorld-eScanGen:Variant.Jaiks.4224
CAT-QuickHealTrojan.KillAv.DR
ALYacGen:Variant.Jaiks.4224
CylanceUnsafe
VIPRETrojan.Win32.Killav.m (v)
AegisLabTrojan.Win32.Foreign.tou8
SangforTrojan.Win32.Save.a
K7AntiVirusP2PWorm ( 004bbea91 )
BitDefenderGen:Variant.Jaiks.4224
K7GWP2PWorm ( 004bbea91 )
CrowdStrikewin/malicious_confidence_100% (D)
BitDefenderThetaGen:NN.ZexaF.34590.MyZ@a0@mctk
CyrenW32/Symmi.A.gen!Eldorado
SymantecML.Attribute.HighConfidence
TotalDefenseWin32/Inject.UOTZWRB
ZonerTrojan.Win32.37005
TrendMicro-HouseCallTROJ_SPNR.30F414
AvastWin32:GenMalicious-IPP [Trj]
ClamAVWin.Trojan.Generic-9763885-0
KasperskyTrojan-Ransom.Win32.Foreign.qot
AlibabaRansom:Win32/Foreign.e6646637
NANO-AntivirusTrojan.Win32.RiskGen.bbmaxj
ViRobotTrojan.Win32.A.Foreign.109600
RisingRansom.Foreign!8.292 (CLOUD)
Ad-AwareGen:Variant.Jaiks.4224
SophosML/PE-A + Mal/KillAV-J
ComodoTrojWare.Win32.Ransom.Foreign.QOT@4qxt69
F-SecureTrojan.TR/Injector.mel
ZillyaTrojan.Foreign.Win32.1381
TrendMicroTROJ_SPNR.30F414
McAfee-GW-EditionBehavesLike.Win32.Trojan.jz
SentinelOneStatic AI – Suspicious PE
FireEyeGeneric.mg.06cb01fc79349565
EmsisoftGen:Variant.Jaiks.4224 (B)
IkarusTrojan-Ransom.Foreign
JiangminTrojan/Foreign.alz
AviraTR/Injector.mel
Antiy-AVLTrojan[Ransom]/Win32.Foreign
MicrosoftTrojan:Win32/Killav!rfn
ArcabitTrojan.Jaiks.D1080
SUPERAntiSpywareTrojan.Agent/Gen-Zusy
ZoneAlarmTrojan-Ransom.Win32.Foreign.qot
GDataGen:Variant.Jaiks.4224
CynetMalicious (score: 100)
AhnLab-V3Trojan/Win32.Jorik.C163899
Acronissuspicious
McAfeeW32/Autorun.worm.aadv
MAXmalware (ai score=100)
VBA32Hoax.Foreign
MalwarebytesRansom.FileCryptor
PandaTrj/Genetic.gen
APEXMalicious
ESET-NOD32Win32/AutoRun.VB.XW
TencentMalware.Win32.Gencirc.10b0d790
YandexTrojan.GenAsa!Of/OHZjfFF8
FortinetW32/Foreign.QOT!tr
WebrootW32.Killav
AVGWin32:GenMalicious-IPP [Trj]
Cybereasonmalicious.c79349
Paloaltogeneric.ml
Qihoo-360Win32/Trojan.VBInject.HxQBezcA

How to remove Trojan:Win32/Killav!rfn 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/Killav!rfn 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/Killav!rfn 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/comparison

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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