What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Spectating the TrojanDropper:Win32/Vundo.AA detection name means that your computer is in big danger. This malware can correctly be identified as ransomware – sort of malware which ciphers your files and asks you to pay for their decryption. Stopping it requires some specific steps that must be taken as soon as possible.
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TrojanDropper:Win32/Vundo.AA detection is a malware detection you can spectate in your computer. It usually appears after the provoking actions on your PC – opening the dubious email, clicking the advertisement in the Internet or installing the program from untrustworthy sources. From the instance it appears, you have a short time to take action before it starts its malicious action. And be sure – it is much better not to await these destructive things.

What is TrojanDropper:Win32/Vundo.AA virus?

TrojanDropper:Win32/Vundo.AA is ransomware-type malware. It searches for the files on your computer, encrypts it, and after that asks you to pay the ransom for receiving the decryption key. Besides making your documents inaccessible, this malware additionally does a ton of harm to your system. It alters the networking setups in order to avoid you from reading the elimination manuals or downloading the antivirus. In some cases, TrojanDropper:Win32/Vundo.AA can even prevent the launching of anti-malware programs.

TrojanDropper:Win32/Vundo.AA Summary

In total, TrojanDropper:Win32/Vundo.AA malware activities in the infected PC 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;
  • 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;
  • Encrypting the files located on the target’s drives — so the victim cannot check these files;
  • Blocking the launching of .exe files of anti-virus apps
  • Blocking the launching of installation files of anti-malware apps

Ransomware has actually been a major problem for the last 4 years. It is hard to realize a more dangerous malware for both individuals and corporations. The algorithms used in TrojanDropper:Win32/Vundo.AA (generally, 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 unpleasant things without delay – it may require up to several hours to cipher all of your files. Hence, seeing the TrojanDropper:Win32/Vundo.AA detection is a clear signal that you must start the removal procedure.

Where did I get the TrojanDropper:Win32/Vundo.AA?

General methods of TrojanDropper:Win32/Vundo.AA injection are common for all other ransomware variants. Those are one-day landing websites where users are offered to download the free program, so-called bait e-mails and hacktools. Bait emails are a pretty modern tactic in malware spreading – you receive the e-mail that simulates some routine notifications about deliveries or bank service conditions modifications. Inside of the email, there is a corrupted MS Office file, or a web link which opens the exploit landing page.

Malicious email spam

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

Preventing it looks pretty easy, however, still requires a lot of recognition. Malware can hide in different places, and it is better to prevent it even before it goes into your system than to rely upon an anti-malware program. Common cybersecurity awareness is just an important item in the modern world, even if your relationship with a PC stays 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.

TrojanDropper:Win32/Vundo.AA malware technical details

File Info:

name: 513B4BAB8B69FE164A3C.mlw
path: /opt/CAPEv2/storage/binaries/15e61577e0316f2f5b1a4186a3f960ca1bffad33a70f3deb56bb1f2c1e6d2eef
crc32: FD0C539A
md5: 513b4bab8b69fe164a3cb1cdee92ce42
sha1: bbef46605c867347c76e1e85bc61c5edec561e70
sha256: 15e61577e0316f2f5b1a4186a3f960ca1bffad33a70f3deb56bb1f2c1e6d2eef
sha512: fda0d177968f0160a5c66c99ff068ef3efb114fb169d7308e19c02a72313cd8f6cb406bffd1badca0e522bde89f33fcb8a4575f85e267e0ca94cbbbd66b801a6
ssdeep: 3072:hLlGRuS1wdXNw///x3OQM8r/CKEAU2RUNRlORBI9HExpe:hLkRuS2Nw3/xYmCKRUFNRERpxM
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T14DE3F121AE7044A7F153933D377C8728171D8EB3976A27492D4E12E6EC63A93C31B52E
sha3_384: ed221dd9e610a0a5dc2a3032c0d40317e653d2379b36aee76c0c21f43b1f7e3df8040899cdbf401d7a86741d054ce995
ep_bytes: 833d6c1442000075358b155d14420085
timestamp: 1992-06-19 04:10:01

Version Info:

0: [No Data]

TrojanDropper:Win32/Vundo.AA also known as:

Elasticmalicious (high confidence)
K7AntiVirusTrojan ( 0040f23c1 )
K7GWTrojan ( 0040f23c1 )
AvastWin32:Vundo-ACX [Trj]
EmsisoftTrojan.Vundo.GYS (B)
SophosMal/Generic-R + Troj/Mdrop-ETG
MAXmalware (ai score=100)
CynetMalicious (score: 100)
RisingSpyware.Voltar!1.AF1D (CLOUD)
SentinelOneStatic AI – Malicious PE
AVGWin32:Vundo-ACX [Trj]
CrowdStrikewin/malicious_confidence_90% (D)

How to remove TrojanDropper:Win32/Vundo.AA?

TrojanDropper:Win32/Vundo.AA malware is incredibly hard to remove manually. It puts its files in multiple locations throughout the disk, and can restore itself from one of the parts. In addition, numerous alterations in the registry, networking settings and Group Policies are fairly hard to identify and return to the original. It is far better to use a special tool – exactly, an anti-malware app. GridinSoft Anti-Malware will fit the best for virus removal objectives.

Why GridinSoft Anti-Malware? It is pretty light-weight and has its databases updated just about every hour. Moreover, 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 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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