Win32:Buterat-OY [Trj]

Written by Robert Bailey
Seeing the Win32:Buterat-OY [Trj] detection usually means that your system is in big danger. This virus can correctly be identified as ransomware – virus which ciphers your files and forces 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:Buterat-OY [Trj] detection is a malware detection you can spectate in your system. It usually appears after the preliminary activities on your computer – opening the dubious e-mail, clicking the banner in the Internet or installing the program from untrustworthy resources. From the moment it shows up, you have a short time to do something about it until it starts its destructive activity. And be sure – it is better not to await these malicious things.

What is Win32:Buterat-OY [Trj] virus?

Win32:Buterat-OY [Trj] is ransomware-type malware. It looks for the documents on your disk drives, ciphers it, and after that asks you to pay the ransom for getting the decryption key. Besides making your documents inaccessible, this malware also does a lot of harm to your system. It changes the networking settings in order to prevent you from checking out the removal manuals or downloading the antivirus. In some cases, Win32:Buterat-OY [Trj] can also stop the setup of anti-malware programs.

Win32:Buterat-OY [Trj] Summary

Summarizingly, Win32:Buterat-OY [Trj] malware activities in the infected system are next:

  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Possible date expiration check, exits too soon after checking local time;
  • Unconventionial language used in binary resources: Russian;
  • The binary likely contains encrypted or compressed data.;
  • Authenticode signature is invalid;
  • Attempts to interact with an Alternate Data Stream (ADS);
  • Anomalous binary characteristics;
  • Ciphering the documents located on the victim’s disks — so the victim cannot check these documents;
  • Blocking the launching of .exe files of anti-malware programs
  • Blocking the launching of installation files of anti-malware programs

Ransomware has been a nightmare for the last 4 years. It is hard to imagine a more dangerous virus for both individuals and organizations. The algorithms used in Win32:Buterat-OY [Trj] (generally, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need to have a lot more time than our galaxy currently 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. Therefore, seeing the Win32:Buterat-OY [Trj] detection is a clear signal that you should start the clearing process.

Where did I get the Win32:Buterat-OY [Trj]?

Standard methods of Win32:Buterat-OY [Trj] distribution are usual for all other ransomware examples. Those are one-day landing web pages where victims are offered to download and install the free app, so-called bait e-mails and hacktools. Bait emails are a quite new tactic in malware distribution – you get the e-mail that simulates some normal notifications about shippings or bank service conditions shifts. Inside of the e-mail, there is a malicious MS Office file, or a web link which leads to the exploit landing page.

Malicious email spam

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

Preventing it looks quite simple, however, still needs tons of focus. Malware can hide in various spots, and it is much better to stop it even before it invades your PC than to rely on an anti-malware program. Simple cybersecurity knowledge is just an important item in the modern world, even if your relationship with a computer remains on YouTube videos. That can save you a lot of time and money which you would spend while trying to find a solution.

Win32:Buterat-OY [Trj] malware technical details

File Info:

name: 7EA822FB43DE0C4C3997.mlw
path: /opt/CAPEv2/storage/binaries/10f8a312b5545aa922c951538fa28135f18ef336932b7ca55f90d7b3eb994399
crc32: 9141D534
md5: 7ea822fb43de0c4c39973e103d31f152
sha1: 0803a83947d60ec7927293dae80fc4dcf77d2b85
sha256: 10f8a312b5545aa922c951538fa28135f18ef336932b7ca55f90d7b3eb994399
sha512: 0a503fdfede5dccd726e65e3efda8664eeb982637f90f9eb27217c1cb8c7e70afdfd710e709931ad59e5a1e757ab7c1f5b85cb5364a4a581b414feb51fe9f3bc
ssdeep: 3072:E2bgriDLt6y2ikoVt9tSbfAoHw9KBD3xhaaCNGpSFvkcBDcrMOC:lbqvTpQLtSjCkD2GkvBedC
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T192C3DF1E7853C433E402483589C6C6D15FBEAC073AE6692FFF95364B4DB12C819EA6B1
sha3_384: 849e7e972ab85bb3114dc95019b852df6561e5894f5956897a6c9ee1ae6193794c1e2c0ba50af5ff3b2e10131ea2463f
ep_bytes: e8d2230000e917feffff8b44240433c9
timestamp: 2011-01-31 02:30:59

Version Info:

0: [No Data]

Win32:Buterat-OY [Trj] also known as:

K7AntiVirusSpyware ( 002edad51 )
K7GWSpyware ( 002edad51 )
CrowdStrikewin/malicious_confidence_90% (W)
Elasticmalicious (high confidence)
AvastWin32:Buterat-OY [Trj]
EmsisoftGen:Variant.Strictor.4845 (B)
SophosML/PE-A + Mal/Vundo-AJ
SentinelOneStatic AI – Malicious PE
MAXmalware (ai score=85)
CynetMalicious (score: 100)
McAfeeGeneric BackDoor.acz
RisingTrojan.Generic@AI.100 (RDML:6kOPdPTg81j36fein45rCw)
AVGWin32:Buterat-OY [Trj]
PandaGeneric Malware

How to remove Win32:Buterat-OY [Trj]?

Win32:Buterat-OY [Trj] malware is very hard to remove by hand. It places its data in multiple locations throughout the disk, and can restore itself from one of the elements. Moreover, a range of changes in the registry, networking setups and also Group Policies are quite hard to find and revert to the initial. It is far better to use a special app – exactly, an anti-malware app. GridinSoft Anti-Malware will definitely fit the best for virus elimination reasons.

Why GridinSoft Anti-Malware? It is pretty lightweight and has its databases updated almost every hour. Moreover, it does not have such problems and weakness as Microsoft Defender does. The combination of these aspects 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

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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