What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Spectating the Win32/Agent.NBJ detection name usually means that your computer is in big danger. This malware can correctly be identified as ransomware – sort of malware which encrypts your files and asks you to pay for their decryption. Deleteing it requires some specific steps that must be taken as soon as possible.
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Win32/Agent.NBJ detection is a virus detection you can spectate in your computer. It usually shows up after the preliminary activities on your computer – opening the suspicious email messages, clicking the advertisement in the Web or mounting the program from dubious resources. From the instance it shows up, you have a short time to do something about it until it starts its destructive action. And be sure – it is better not to await these harmful effects.

What is Win32/Agent.NBJ virus?

Win32/Agent.NBJ is ransomware-type malware. It looks for the documents on your disk, ciphers it, and after that asks you to pay the ransom for receiving the decryption key. Besides making your files locked, this malware also does a lot of damage to your system. It changes the networking setups in order to prevent you from looking for the elimination guidelines or downloading the anti-malware program. Sometimes, Win32/Agent.NBJ can additionally stop the setup of anti-malware programs.

Win32/Agent.NBJ Summary

In total, Win32/Agent.NBJ ransomware activities in the infected system are next:

  • Anomalous file deletion behavior detected (10+);
  • Reads data out of its own binary image;
  • Manipulates data from or to the Recycle Bin;
  • CAPE extracted potentially suspicious content;
  • Drops a binary and executes it;
  • Unconventionial language used in binary resources: Chinese (Simplified);
  • Authenticode signature is invalid;
  • Exhibits possible ransomware file modification behavior;
  • Encrypting the files located on the target’s drive — so the victim cannot open these documents;
  • Blocking the launching of .exe files of anti-virus apps
  • Blocking the launching of installation files of security tools

Ransomware has been a nightmare for the last 4 years. It is challenging to imagine a more hazardous virus for both individual users and corporations. The algorithms used in Win32/Agent.NBJ (usually, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need more time than our galaxy already exists, and possibly will exist. But that malware does not do all these bad things instantly – it can take up to a few hours to cipher all of your documents. Therefore, seeing the Win32/Agent.NBJ detection is a clear signal that you should start the elimination procedure.

Where did I get the Win32/Agent.NBJ?

Routine tactics of Win32/Agent.NBJ spreading are common for all other ransomware examples. Those are one-day landing sites where victims are offered to download and install the free program, 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 shippings or bank service conditions shifts. Within the email, there is an infected MS Office file, or a web link which opens the exploit landing site.

Malicious email spam

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

Avoiding it looks fairly simple, but still demands tons of awareness. Malware can hide in different spots, and it is better to prevent it even before it goes into your computer than to rely upon an anti-malware program. Essential cybersecurity knowledge is just an essential item in the modern world, even if your relationship with a computer stays on YouTube videos. That can keep you a great deal of money and time which you would certainly spend while searching for a solution.

Win32/Agent.NBJ malware technical details

File Info:

name: D3FF6BA0D457B56E6DD0.mlw
path: /opt/CAPEv2/storage/binaries/cf2e68ca44b70914a9cb5c8955f7aa261e2a1f3cd813e06d78eae9c99cee7482
crc32: F439845E
md5: d3ff6ba0d457b56e6dd0fc71bb9010bc
sha1: e68800eb74d35dfb3a186514243c171458444ebd
sha256: cf2e68ca44b70914a9cb5c8955f7aa261e2a1f3cd813e06d78eae9c99cee7482
sha512: 4fe7207c531824c1c3e51c9310dad071dc02a62079e94919d473cbfedc9a6d201bdabae9337a10eecfe1e85055cab652eea42075622821abde3fa72f7ce388a4
ssdeep: 6144:RqjZht3L2fLgQm9yGjvdRpR4PWqjZht3L2fLgQm9yGjvdRpR4Pz:2fV2jg8fV2jgc
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T176A4E7A7FC9A248AE74EDA3750D6388EE9B43C6E43C01E3F21317155B567BA0507EC1A
sha3_384: 18db6563b681cf574a24f76ac1d9c11b1a14e224b8444dc5a0231bfd7ebee5cdf97a541986fe7b09bfcabb75eb31470e
ep_bytes: 558bec6aff684031400068b022400064
timestamp: 2011-03-15 04:06:07

Version Info:

0: [No Data]

Win32/Agent.NBJ also known as:

K7AntiVirusTrojan ( 0055e3dd1 )
K7GWTrojan ( 0055e3dd1 )
AvastWin32:RansomX-gen [Ransom]
VIPRETrojan.Win32.Cosmu.bwts (v)
EmsisoftTrojan.GenericKD.34110279 (B)
MAXmalware (ai score=89)
CynetMalicious (score: 100)
RisingTrojan.Zombie!8.2DA5 (RDMK:cmRtazqZA6YRCTDRdADX/kB5jVbL)
AVGWin32:RansomX-gen [Ransom]
CrowdStrikewin/malicious_confidence_60% (D)

How to remove Win32/Agent.NBJ?

Win32/Agent.NBJ malware is incredibly difficult to remove by hand. It stores its files in multiple places throughout the disk, and can restore itself from one of the elements. In addition, a number of changes in the registry, networking setups and also Group Policies are fairly hard to locate and return to the original. It is far better to make use of a specific app – exactly, an anti-malware tool. GridinSoft Anti-Malware will definitely fit the best for virus removal objectives.

Why GridinSoft Anti-Malware? It is very lightweight and has its databases updated practically 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 eliminating malware of any kind.

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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