What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Seeing the TrojanDownloader:Win32/Vundo.J malware detection means that your PC is in big danger. This malware can correctly be named as ransomware – sort of malware which ciphers your files and asks you to pay for their decryption. Stopping it requires some peculiar steps that must be taken as soon as possible.
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TrojanDownloader:Win32/Vundo.J detection is a virus detection you can spectate in your system. It often appears after the provoking activities on your PC – opening the untrustworthy e-mail messages, clicking the advertisement in the Web or setting up the program from dubious sources. From the second it appears, you have a short time to take action before it begins its malicious action. And be sure – it is better not to wait for these malicious actions.

What is TrojanDownloader:Win32/Vundo.J virus?

TrojanDownloader:Win32/Vundo.J is ransomware-type malware. It searches for the files on your computer, ciphers it, and after that asks you to pay the ransom for receiving the decryption key. Besides making your documents locked, this malware also does a ton of harm to your system. It alters the networking settings in order to prevent you from reading the removal articles or downloading the anti-malware program. In some cases, TrojanDownloader:Win32/Vundo.J can even block the launching of anti-malware programs.

TrojanDownloader:Win32/Vundo.J Summary

In total, TrojanDownloader:Win32/Vundo.J virus activities in the infected computer are next:

  • Behavioural detection: Executable code extraction – unpacking;
  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Creates RWX memory;
  • Anomalous file deletion behavior detected (10+);
  • Dynamic (imported) function loading detected;
  • Enumerates running processes;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • CAPE extracted potentially suspicious content;
  • Unconventionial language used in binary resources: Russian;
  • The binary contains an unknown PE section name indicative of packing;
  • Authenticode signature is invalid;
  • Installs itself for autorun at Windows startup;
  • Collects information to fingerprint the system;
  • Anomalous binary characteristics;
  • Clears web history;
  • Ciphering the files located on the victim’s disk — so the victim cannot open these files;
  • Blocking the launching of .exe files of anti-virus programs
  • Blocking the launching of installation files of anti-virus apps

Ransomware has actually been a nightmare for the last 4 years. It is hard to imagine a more hazardous virus for both individuals and businesses. The algorithms utilized in TrojanDownloader:Win32/Vundo.J (typically, 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 actually exists, and possibly will exist. But that virus does not do all these unpleasant things immediately – it can take up to several hours to cipher all of your documents. Thus, seeing the TrojanDownloader:Win32/Vundo.J detection is a clear signal that you should start the removal procedure.

Where did I get the TrojanDownloader:Win32/Vundo.J?

Standard ways of TrojanDownloader:Win32/Vundo.J injection are typical for all other ransomware examples. Those are one-day landing sites where users are offered to download and install the free app, so-called bait e-mails and hacktools. Bait emails are a relatively modern tactic in malware spreading – you receive the e-mail that simulates some regular notifications about shippings or bank service conditions shifts. 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 pretty uncomplicated, however, still demands tons of focus. Malware can hide in various places, and it is better to stop it even before it invades your system than to rely upon an anti-malware program. Standard cybersecurity awareness is just an important thing in the modern-day world, even if your interaction with a computer stays on YouTube videos. That may keep you a lot of money and time which you would certainly spend while looking for a solution.

TrojanDownloader:Win32/Vundo.J malware technical details

File Info:

name: BBDC9354343CDC9DF4D8.mlw
path: /opt/CAPEv2/storage/binaries/f063416988affc70f38e9400e22a945b3314482b698af255ac8cbbb3d2045960
crc32: B6A1D3B5
md5: bbdc9354343cdc9df4d8898a041d0a48
sha1: 442e21891f7300b828d5e19ac9a6e85bb250cdee
sha256: f063416988affc70f38e9400e22a945b3314482b698af255ac8cbbb3d2045960
sha512: 033eee793570e571d54758824388b84e2889a7d46b2e1185bd4cfc5c33afa619f44879e3087529b74329e19f44472b69b9cfbddcf07b94f87fd3ac03a2bba031
ssdeep: 3072:Jcli7bOci8jhSFo6Y+GlzkF2BJU5HHS7Bs+ePBUa:Jcli7bOcijoT+GuF2LU5HHGBs+eZUa
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T11ED3011BBED4D9F3D321933C621FEDCAD2BDF5655BC1BB3B224094226A23A11E54B094
sha3_384: c72260aecb913b3e6e2343a3d0f4a317700955763ecedaf47a74da11c01c4cbfdf7b2fe411b7b196c053269cc88e4cbb
ep_bytes: 833d6cf4410000752d8b155df4410085
timestamp: 1992-06-19 06:00:20

Version Info:

0: [No Data]

TrojanDownloader:Win32/Vundo.J also known as:

Elasticmalicious (high confidence)
K7AntiVirusTrojan ( 0040f23c1 )
K7GWTrojan ( 0040f23c1 )
ESET-NOD32a variant of Win32/Kryptik.AQIN
AvastWin32:Vundo-ACX [Trj]
EmsisoftGen:Variant.Ser.Razy.12645 (B)
SophosMal/Generic-R + Mal/EncPk-AEH
SentinelOneStatic AI – Malicious PE
CynetMalicious (score: 100)
MAXmalware (ai score=100)
RisingSpyware.Voltar!1.AF1D (CLOUD)
AVGWin32:Vundo-ACX [Trj]
PandaGeneric Malware
CrowdStrikewin/malicious_confidence_100% (D)

How to remove TrojanDownloader:Win32/Vundo.J?

TrojanDownloader:Win32/Vundo.J malware is very hard to erase by hand. It stores its data in several locations throughout the disk, and can get back itself from one of the parts. Furthermore, a range of alterations in the windows registry, networking configurations and also Group Policies are pretty hard to identify and change to the initial. It is far better to make use of a specific app – exactly, an anti-malware tool. GridinSoft Anti-Malware will fit the most ideal for malware elimination goals.

Why GridinSoft Anti-Malware? It is very light-weight and has its detection databases updated nearly 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 suitable for taking out 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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