What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey
Spectating the Trojan-Downloader.Win32.Upatre.pef malware detection means that your computer is in big danger. This computer virus can correctly be identified as ransomware – type of malware which ciphers your files and forces you to pay for their decryption. Removing it requires some peculiar steps that must be taken as soon as possible.
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Trojan-Downloader.Win32.Upatre.pef detection is a virus detection you can spectate in your computer. It frequently shows up after the preliminary procedures on your computer – opening the dubious email messages, clicking the banner in the Internet or setting up the program from suspicious sources. From the second it shows up, you have a short time to act until it starts its destructive activity. And be sure – it is better not to await these destructive things.

What is Trojan-Downloader.Win32.Upatre.pef virus?

Trojan-Downloader.Win32.Upatre.pef is ransomware-type malware. It looks for the documents on your disk, ciphers it, and after that asks you to pay the ransom for getting the decryption key. Besides making your files locked, this malware also does a lot of harm to your system. It changes the networking settings in order to prevent you from reading the removal articles or downloading the anti-malware program. In some cases, Trojan-Downloader.Win32.Upatre.pef can even block the setup of anti-malware programs.

Trojan-Downloader.Win32.Upatre.pef Summary

In summary, Trojan-Downloader.Win32.Upatre.pef virus actions in the infected system are next:

  • Behavioural detection: Executable code extraction – unpacking;
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Creates RWX memory;
  • Dynamic (imported) function loading detected;
  • Performs HTTP requests potentially not found in PCAP.;
  • Reads data out of its own binary image;
  • A process created a hidden window;
  • CAPE extracted potentially suspicious content;
  • Drops a binary and executes it;
  • The binary contains an unknown PE section name indicative of packing;
  • Executable file is packed/obfuscated with MPRESS;
  • Authenticode signature is invalid;
  • Attempts to repeatedly call a single API many times in order to delay analysis time;
  • Created a process from a suspicious location;
  • Attempts to modify proxy settings;
  • Anomalous binary characteristics;
  • Ciphering the files located on the target’s drive — so the victim cannot open these files;
  • Blocking the launching of .exe files of anti-malware 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 harmful malware for both individuals and organizations. The algorithms used in Trojan-Downloader.Win32.Upatre.pef (typically, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need a lot more time than our galaxy currently exists, and possibly will exist. But that virus does not do all these horrible things instantly – it may require up to several hours to cipher all of your files. Hence, seeing the Trojan-Downloader.Win32.Upatre.pef detection is a clear signal that you need to start the elimination procedure.

Where did I get the Trojan-Downloader.Win32.Upatre.pef?

Usual methods of Trojan-Downloader.Win32.Upatre.pef distribution are basic for all other ransomware examples. Those are one-day landing sites where users are offered to download the free program, so-called bait emails and hacktools. Bait emails are a pretty modern method in malware distribution – you receive the e-mail that simulates some regular notifications about shippings or bank service conditions updates. Within the e-mail, there is a corrupted MS Office file, or a web link which leads to the exploit landing site.

Malicious email spam

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

Avoiding it looks quite simple, but still requires a lot of attention. Malware can hide in various spots, and it is better to prevent it even before it gets into your system than to rely on an anti-malware program. Standard cybersecurity awareness is just an essential thing in the modern-day world, even if your interaction with a PC stays on YouTube videos. That can save you a lot of money and time which you would spend while searching for a solution.

Trojan-Downloader.Win32.Upatre.pef malware technical details

File Info:

name: E57C9236C3477B2A3D26.mlw
path: /opt/CAPEv2/storage/binaries/b94e051cfc7ff4a42b73b71c488f566c70ab48a9e7c1c2634b9d8ebf13ccbac3
crc32: 63092318
md5: e57c9236c3477b2a3d26dbab86ed274a
sha1: 5dc6cf1741ad871668aa51e1e107bc9990db7fca
sha256: b94e051cfc7ff4a42b73b71c488f566c70ab48a9e7c1c2634b9d8ebf13ccbac3
sha512: bf73ae31da4314725ee4bb404fba548da4872e066c560ee5b2c71f22bdac186a3e680301c96177ce3a6642ab39bb99d63941ec3afbca79a11339b4591adffc82
ssdeep: 384:TgEaziQIBt8yguzjEBNQiviL//U8zYpDc7+57ERk9+:T7a/6BlSvW//pzW7h+
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1C5B34BF33ACDDF2EF12E9EB588B4D0EA5C25791488A2002E75C4E84F1C661E799ED611
sha3_384: b5084742340e4bd898048b074376aa0773b35c1ebefd48db42b1398ba7cc5bc0f35fc19acf6010d077adc9f95e0b6e2a
ep_bytes: 837c24120ae8b6ffffff29d101c1e889
timestamp: 2004-05-28 09:53:59

Version Info:

0: [No Data]

Trojan-Downloader.Win32.Upatre.pef also known as:

Elasticmalicious (high confidence)
K7AntiVirusTrojan ( 0052964f1 )
K7GWTrojan ( 0052964f1 )
RisingDownloader.Upatre!8.B5 (RDMK:cmRtazoFf0TUDsxvT5I)
EmsisoftTrojan.GenericKD.48863363 (B)
SophosML/PE-A + Troj/Zbot-HMB
SentinelOneStatic AI – Malicious PE
CynetMalicious (score: 100)
MAXmalware (ai score=81)
AVGWin32:Waski-B [Cryp]
AvastWin32:Waski-B [Cryp]
CrowdStrikewin/malicious_confidence_100% (D)

How to remove Trojan-Downloader.Win32.Upatre.pef?

Trojan-Downloader.Win32.Upatre.pef malware is incredibly difficult to delete by hand. It places its data in multiple places throughout the disk, and can recover itself from one of the parts. Moreover, numerous alterations in the windows registry, networking setups and Group Policies are really hard to discover and revert to the initial. It is much better to utilize a specific tool – exactly, an anti-malware app. GridinSoft Anti-Malware will definitely fit the most ideal for malware removal objectives.

Why GridinSoft Anti-Malware? It is really lightweight and has its databases updated just about every hour. Furthermore, it does not have such bugs and exploits as Microsoft Defender does. The combination of these facts makes GridinSoft Anti-Malware ideal for eliminating 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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