What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Seeing the TrojanDownloader:Win32/Dofoil.U detection means that your system is in big danger. This computer virus can correctly be named as ransomware – sort of malware which encrypts your files and asks you to pay for their decryption. Stopping it requires some peculiar steps that must be done as soon as possible.
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TrojanDownloader:Win32/Dofoil.U detection is a malware detection you can spectate in your computer. It generally shows up after the provoking actions on your computer – opening the dubious email, clicking the banner in the Web or mounting the program from suspicious sources. From the moment it shows up, you have a short time to act before it starts its harmful activity. And be sure – it is better not to wait for these harmful effects.

What is TrojanDownloader:Win32/Dofoil.U virus?

TrojanDownloader:Win32/Dofoil.U is ransomware-type malware. It searches for the files on your disks, ciphers it, and after that asks you to pay the ransom for getting the decryption key. Besides making your documents locked, this virus also does a lot of harm to your system. It alters the networking settings in order to prevent you from looking for the elimination manuals or downloading the antivirus. Sometimes, TrojanDownloader:Win32/Dofoil.U can additionally prevent the launching of anti-malware programs.

TrojanDownloader:Win32/Dofoil.U Summary

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

  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Behavioural detection: Executable code extraction – unpacking;
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Creates RWX memory;
  • Possible date expiration check, exits too soon after checking local time;
  • Guard pages use detected – possible anti-debugging.;
  • Dynamic (imported) function loading detected;
  • Enumerates running processes;
  • Expresses interest in specific running processes;
  • Reads data out of its own binary image;
  • CAPE extracted potentially suspicious content;
  • Authenticode signature is invalid;
  • Behavioural detection: Injection (Process Hollowing);
  • Executed a process and injected code into it, probably while unpacking;
  • Detects Sandboxie through the presence of a library;
  • Code injection with CreateRemoteThread in a remote process;
  • Behavioural detection: Injection (inter-process);
  • Behavioural detection: Injection with CreateRemoteThread in a remote process;
  • Checks the presence of disk drives in the registry, possibly for anti-virtualization;
  • Ciphering the documents located on the victim’s disk 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 anti-malware apps

Ransomware has been a major problem for the last 4 years. It is challenging to realize a more damaging malware for both individual users and businesses. The algorithms used in TrojanDownloader:Win32/Dofoil.U (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 actually exists, and possibly will exist. However, that virus does not do all these horrible things instantly – it may require up to a few hours to cipher all of your files. Hence, seeing the TrojanDownloader:Win32/Dofoil.U detection is a clear signal that you should start the clearing process.

Where did I get the TrojanDownloader:Win32/Dofoil.U?

Usual tactics of TrojanDownloader:Win32/Dofoil.U distribution are basic for all other ransomware variants. Those are one-day landing sites where users are offered to download and install the free software, so-called bait e-mails and hacktools. Bait emails are a relatively new method in malware distribution – you get the email that imitates some regular notifications about shippings or bank service conditions shifts. Within the e-mail, there is a malicious 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 requires tons of awareness. Malware can hide in different spots, and it is better to stop it even before it gets into your system than to rely upon an anti-malware program. Essential cybersecurity awareness is just an essential item in the modern world, even if your relationship with a PC remains on YouTube videos. That may save you a great deal of money and time which you would certainly spend while looking for a fixing guide.

TrojanDownloader:Win32/Dofoil.U malware technical details

File Info:

name: D6704A162F576CF2CC17.mlw
path: /opt/CAPEv2/storage/binaries/cf6e4fce06fcbcc9b1f6351efa0befed4b6b3cbfb89605adf822c4688b97bf50
crc32: 6443C0BB
md5: d6704a162f576cf2cc17850ca883ad7e
sha1: 74c89f0f285b85b94971190aa1a4a6949e9ec6bc
sha256: cf6e4fce06fcbcc9b1f6351efa0befed4b6b3cbfb89605adf822c4688b97bf50
sha512: c3d8c6491903d0734490405e8bcab02bcc29bc67ee81091f29dbcc1460a7f7c1efadb9c821ead24fd04565a95ce229c6e5c7709988e33224536f1bd39171d880
ssdeep: 1536:0aRdLiaUpk8TTdF3vn/5efi5dmngkQXG9yseMTO/NTEtb/EsegQnQBm2:0aRYaEkwcKX0HLSNTEtbkNQB
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T19FA36B1AB644F031F82936B3403857E7566DB8222B33968FBF1917E4AA723D45F70362
sha3_384: 17f79a16879bb19af7f2ee4001cf2939adf82a708b3fdb0d6029cae349f0aff473d0e8731366c25a813360b769046b3f
ep_bytes: e872370000e989feffffb898db4000c3
timestamp: 2013-01-23 06:58:16

Version Info:

0: [No Data]

TrojanDownloader:Win32/Dofoil.U also known as:

Elasticmalicious (high confidence)
VIPRETrojan-PWS.Win32.Zbot.asv (v)
CrowdStrikewin/malicious_confidence_90% (W)
ESET-NOD32a variant of Win32/Injector.AINT
CynetMalicious (score: 100)
SophosMal/Generic-R + Mal/EncPk-AGD
EmsisoftTrojan.Generic.KDZ.5246 (B)
MAXmalware (ai score=99)
RisingDownloader.Dofoil!8.322 (CLOUD)
SentinelOneStatic AI – Suspicious PE
PandaGeneric Malware

How to remove TrojanDownloader:Win32/Dofoil.U?

TrojanDownloader:Win32/Dofoil.U malware is very difficult to delete manually. It puts its documents in numerous places throughout the disk, and can recover itself from one of the elements. Furthermore, a lot of alterations in the registry, networking settings and also Group Policies are fairly hard to identify and revert to the initial. It is better to use a special app – exactly, an anti-malware app. GridinSoft Anti-Malware will definitely fit the best for malware elimination purposes.

Why GridinSoft Anti-Malware? It is very light-weight and has its detection databases updated just about every hour. Additionally, it does not have such problems and exposures as Microsoft Defender does. The combination of these details makes GridinSoft Anti-Malware suitable for removing 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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