Win32/Filecoder.OJJ

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Spectating the Win32/Filecoder.OJJ detection usually means that your computer is in big danger. This virus can correctly be identified as ransomware – type of malware which ciphers your files and forces you to pay for their decryption. Stopping it requires some peculiar steps that must be done as soon as possible.
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Win32/Filecoder.OJJ detection is a virus detection you can spectate in your system. It frequently shows up after the provoking actions on your PC – opening the dubious email messages, clicking the banner in the Internet or installing the program from unreliable resources. From the moment it appears, you have a short time to do something about it before it begins its harmful action. And be sure – it is much better not to wait for these destructive effects.

What is Win32/Filecoder.OJJ virus?

Win32/Filecoder.OJJ is ransomware-type malware. It searches for the files on your computer, encrypts it, and after that asks you to pay the ransom for getting the decryption key. Besides making your files locked, this malware additionally does a ton of harm to your system. It alters the networking settings in order to prevent you from reading the elimination guides or downloading the anti-malware program. In rare cases, Win32/Filecoder.OJJ can even stop the launching of anti-malware programs.

Win32/Filecoder.OJJ Summary

In summary, Win32/Filecoder.OJJ malware activities in the infected system are next:

  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Dynamic (imported) function loading detected;
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Creates RWX memory;
  • Authenticode signature is invalid;
  • Steals private information from local Internet browsers;
  • Installs itself for autorun at Windows startup;
  • Exhibits possible ransomware file modification behavior;
  • Harvests cookies for information gathering;
  • Ciphering the documents located on the victim’s drives — so the victim cannot check these documents;
  • Blocking the launching of .exe files of security tools
  • Blocking the launching of installation files of anti-virus programs

Ransomware has been a horror story for the last 4 years. It is difficult to imagine a more harmful malware for both individual users and corporations. The algorithms utilized in Win32/Filecoder.OJJ (usually, 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. However, that malware does not do all these horrible things immediately – it may require up to a few hours to cipher all of your files. Hence, seeing the Win32/Filecoder.OJJ detection is a clear signal that you must start the removal process.

Where did I get the Win32/Filecoder.OJJ?

Standard ways of Win32/Filecoder.OJJ distribution are standard for all other ransomware variants. Those are one-day landing web pages where users are offered to download and install the free program, so-called bait e-mails and hacktools. Bait e-mails are a pretty new tactic in malware distribution – you receive the e-mail that simulates some normal notifications about shippings or bank service conditions modifications. Within the email, 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, however, still needs tons of recognition. Malware can hide in different spots, and it is much better to prevent it even before it gets into your computer than to rely upon an anti-malware program. Common cybersecurity awareness is just an important thing in the modern-day world, even if your relationship with a computer remains on YouTube videos. That can save you a lot of time and money which you would certainly spend while trying to find a fixing guide.

Win32/Filecoder.OJJ malware technical details

File Info:

name: 4A2C7295771216A38836.mlw
path: /opt/CAPEv2/storage/binaries/c3e2744b2214c3671416bbd4014d9647307a51e88950268be225be32ed672ca9
crc32: E97833D2
md5: 4a2c7295771216a38836758181eb0ac6
sha1: d197da3c3966469ed7488d09bbfbc0098b0a337a
sha256: c3e2744b2214c3671416bbd4014d9647307a51e88950268be225be32ed672ca9
sha512: e28bc8a22dedcd5bdb0f5ce0a807db31e79cd1870efafbb7ad19a4f6723699ae1e11ddb1262754d285608b05b9121c242e4cc976e319ebbbd850715bac2832a9
ssdeep: 3072:P3MBAlklXz5rpvMxfGYCb/Vh5kl84ssrFSIW9:P3MXXzNKl82FQ9
type: PE32 executable (console) Intel 80386, for MS Windows
tlsh: T165F37C4CEE4798F2EA23B0B65ECEE77B41346B028961FEB6FF4D4A5078337511624246
sha3_384: b0a7bfd85df18c9a6d96510e1e947f61dc26ef0515970ba5de840ba41d9bb15f422bea170ae081410136d365f540f741
ep_bytes: c7059820430000000000e9a1fcffff90
timestamp: 2021-12-03 21:27:14

Version Info:

0: [No Data]

Win32/Filecoder.OJJ also known as:

LionicTrojan.Win32.Encoder.j!c
MicroWorld-eScanGen:Variant.Jaik.48000
FireEyeGen:Variant.Jaik.48000
CAT-QuickHealTrojanransom.Encoder
ALYacGen:Variant.Jaik.48000
CylanceUnsafe
CrowdStrikewin/malicious_confidence_100% (W)
AlibabaTrojan:Win32/Filecoder.0a46aba6
K7GWTrojan ( 0058b2641 )
K7AntiVirusTrojan ( 0058b2641 )
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of Win32/Filecoder.OJJ
Paloaltogeneric.ml
KasperskyTrojan-Ransom.Win32.Encoder.ood
BitDefenderGen:Variant.Jaik.48000
AvastWin32:Trojan-gen
Ad-AwareGen:Variant.Jaik.48000
TrendMicroRansom_Encoder.R067C0WL921
McAfee-GW-EditionGenericRXRB-JR!4A2C72957712
EmsisoftGen:Variant.Jaik.48000 (B)
JiangminTrojan.Encoder.anz
WebrootW32.Trojan.Gen
AviraTR/FileCoder.ocncj
MAXmalware (ai score=80)
Antiy-AVLTrojan/Generic.ASMalwS.34E5956
MicrosoftTrojan:Win32/Sabsik.TE.B!ml
ViRobotTrojan.Win32.Z.Filecoder.160256
GDataGen:Variant.Jaik.48000
CynetMalicious (score: 99)
AhnLab-V3Trojan/Win.Generic.R456478
McAfeeGenericRXRB-JR!4A2C72957712
VBA32BScope.Trojan.Meterpreter
TrendMicro-HouseCallRansom_Encoder.R067C0WL921
TencentWin32.Trojan.Filecoder.Pcjc
IkarusTrojan-Ransom.FileCrypter
FortinetW32/Filecoder.OJJ!tr
AVGWin32:Trojan-gen
PandaTrj/GdSda.A

How to remove Win32/Filecoder.OJJ?

Win32/Filecoder.OJJ malware is very hard to eliminate manually. It places its files in several locations throughout the disk, and can recover itself from one of the elements. Moreover, numerous alterations in the windows registry, networking configurations and Group Policies are pretty hard to find and return to the initial. It is far better to utilize a specific tool – exactly, an anti-malware tool. GridinSoft Anti-Malware will definitely fit the best for malware elimination reasons.

Why GridinSoft Anti-Malware? It is really light-weight and has its databases updated just about every hour. In addition, it does not have such problems and exploits as Microsoft Defender does. The combination of these facts makes GridinSoft Anti-Malware ideal for taking out 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.
  • 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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