Win32/Filecoder.OKI

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Seeing the Win32/Filecoder.OKI detection usually means that your PC is in big danger. This malware can correctly be identified as ransomware – virus which encrypts your files and asks you to pay for their decryption. Removing it requires some unusual steps that must be done as soon as possible.
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Win32/Filecoder.OKI detection is a malware detection you can spectate in your system. It generally shows up after the preliminary activities on your PC – opening the untrustworthy e-mail, clicking the advertisement in the Web or mounting the program from suspicious sources. From the moment it shows up, you have a short time to do something about it before it begins its malicious activity. And be sure – it is much better not to await these malicious effects.

What is Win32/Filecoder.OKI virus?

Win32/Filecoder.OKI is ransomware-type malware. It searches for the files on your disk, ciphers it, and after that asks you to pay the ransom for getting the decryption key. Besides making your documents inaccessible, this virus also does a ton of harm to your system. It modifies the networking setups in order to prevent you from looking for the elimination articles or downloading the anti-malware program. In some cases, Win32/Filecoder.OKI can even prevent the launching of anti-malware programs.

Win32/Filecoder.OKI Summary

In total, Win32/Filecoder.OKI virus actions in the infected PC are next:

  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Authenticode signature is invalid;
  • Writes a potential ransom message to disk;
  • Creates a known Avaddon ransomware decryption instruction / key file.;
  • Encrypting the documents located on the target’s disks — so the victim cannot use these documents;
  • Blocking the launching of .exe files of security tools
  • Blocking the launching of installation files of anti-virus apps

Ransomware has actually been a headache for the last 4 years. It is difficult to picture a more hazardous virus for both individual users and corporations. The algorithms used in Win32/Filecoder.OKI (typically, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need to have more time than our galaxy currently exists, and possibly will exist. But that malware does not do all these horrible things instantly – it may require up to a few hours to cipher all of your files. Thus, seeing the Win32/Filecoder.OKI detection is a clear signal that you must begin the removal process.

Where did I get the Win32/Filecoder.OKI?

Standard ways of Win32/Filecoder.OKI injection are typical for all other ransomware variants. Those are one-day landing web pages where victims are offered to download the free app, so-called bait emails and hacktools. Bait e-mails are a relatively new method in malware spreading – you get the e-mail that simulates some standard notifications about shipments or bank service conditions changes. Within the email, there is a corrupted MS Office file, or a link which opens the exploit landing page.

Malicious email spam

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

Avoiding it looks quite simple, however, still requires tons of recognition. Malware can hide in various spots, and it is far better to prevent it even before it invades your computer than to depend on an anti-malware program. Common cybersecurity knowledge is just an essential item in the modern-day world, even if your interaction with a computer remains on YouTube videos. That may keep you a great deal of money and time which you would certainly spend while searching for a fix guide.

Win32/Filecoder.OKI malware technical details

File Info:

name: 57900758B34E17F352F7.mlw
path: /opt/CAPEv2/storage/binaries/fbd91dbd00d0251fe2ca96a96d7b25f0b1bb35e1e0ad855bc7123a8da3dfac68
crc32: 0B390B97
md5: 57900758b34e17f352f7febb03795d49
sha1: aa500db8a669ad847ebe34cb4e66d8a74f9c4993
sha256: fbd91dbd00d0251fe2ca96a96d7b25f0b1bb35e1e0ad855bc7123a8da3dfac68
sha512: 7f3738b7c9b6e5c5381f653eee3b6017076bceb3bcfc64b625794c020fc9e7f2b082856dd0c5f10ca3ffdf451d15c22cfff76b4902c8f3e669e40a6af1362543
ssdeep: 48:6ue5vrxm5yplr9DXXDWVDzOyP6/skvFG9stZmaJgviafRrIgng:wDhpl5DHKOyP6sk89EZmasioNg
type: PE32 executable (console) Intel 80386, for MS Windows
tlsh: T11271541FBD69D63AD145C131079283B97733833436C05A53C764A8FAA669F8E33AD60D
sha3_384: a07da544c66ef2d7aaa0c02ee5e13cbc5d328dce33646e1c22c7e05f4d8e581f2e142d3850d5cc18fb74ef9be673425b
ep_bytes: 5589e581ec24000000908d45e850e862
timestamp: 1970-01-01 00:00:00

Version Info:

0: [No Data]

Win32/Filecoder.OKI also known as:

LionicTrojan.Win32.Generic.4!c
tehtrisGeneric.Malware
CynetMalicious (score: 100)
FireEyeGen:Variant.Ulise.350088
McAfeeRDN/Zhelatin.gen
ZillyaTrojan.Agent.Win32.2736857
SangforRansom.Win32.Acepy.A
K7AntiVirusTrojan ( 0058f9831 )
AlibabaRansom:Win32/RansomX.bc9a6d25
K7GWTrojan ( 0058f9831 )
SymantecML.Attribute.HighConfidence
Elasticmalicious (high confidence)
ESET-NOD32Win32/Filecoder.OKI
Paloaltogeneric.ml
BitDefenderGen:Variant.Ulise.350088
MicroWorld-eScanGen:Variant.Ulise.350088
AvastWin32:RansomX-gen [Ransom]
Ad-AwareGen:Variant.Ulise.350088
DrWebTrojan.Encoder.35105
VIPREGen:Variant.Ulise.350088
McAfee-GW-EditionRDN/Zhelatin.gen
Trapminemalicious.high.ml.score
EmsisoftGen:Variant.Ulise.350088 (B)
APEXMalicious
GDataWin32.Trojan-Ransom.Acepy.A
JiangminTrojan.Crypmod.ji
MAXmalware (ai score=85)
Antiy-AVLTrojan/Generic.ASMalwS.1D6F
ArcabitTrojan.Ulise.D55788
MicrosoftTrojan:Win32/Wacatac.B!ml
SentinelOneStatic AI – Suspicious PE
AhnLab-V3Worm/Win32.Zhelatin.C112256
VBA32BScope.TrojanRansom.Agent
ALYacGen:Variant.Ulise.350088
CylanceUnsafe
RisingRansom.Agent!8.6B7 (CLOUD)
YandexTrojan.Filecoder!Dv6a1/oE+fo
IkarusTrojan-Ransom.FileCrypter
MaxSecureTrojan.Malware.143890965.susgen
FortinetW32/Filecoder.OKI!tr.ransom
AVGWin32:RansomX-gen [Ransom]
CrowdStrikewin/malicious_confidence_100% (W)

How to remove Win32/Filecoder.OKI?

Win32/Filecoder.OKI malware is very hard to eliminate manually. It stores its data in several places throughout the disk, and can restore itself from one of the parts. Furthermore, various changes in the windows registry, networking configurations and also Group Policies are quite hard to identify and revert to the initial. It is far better to utilize a specific app – exactly, an anti-malware app. GridinSoft Anti-Malware will fit the most ideal for malware elimination reasons.

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

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.
  • Gridinsoft Anti-Malware during 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.
  • GridinSoft Anti-Malware scan results

  • When the scan is over, you may choose the action for each detected virus. For all files of [SHORT_NAME] the default option is “Delete”. Press “Apply” to finish the malware removal.
  • GridinSoft Anti-Malware - 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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