Win32:Buterat-OY [Trj]

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.

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] 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.mlwpath: /opt/CAPEv2/storage/binaries/10f8a312b5545aa922c951538fa28135f18ef336932b7ca55f90d7b3eb994399crc32: 9141D534md5: 7ea822fb43de0c4c39973e103d31f152sha1: 0803a83947d60ec7927293dae80fc4dcf77d2b85sha256: 10f8a312b5545aa922c951538fa28135f18ef336932b7ca55f90d7b3eb994399sha512: 0a503fdfede5dccd726e65e3efda8664eeb982637f90f9eb27217c1cb8c7e70afdfd710e709931ad59e5a1e757ab7c1f5b85cb5364a4a581b414feb51fe9f3bcssdeep: 3072:E2bgriDLt6y2ikoVt9tSbfAoHw9KBD3xhaaCNGpSFvkcBDcrMOC:lbqvTpQLtSjCkD2GkvBedCtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T192C3DF1E7853C433E402483589C6C6D15FBEAC073AE6692FFF95364B4DB12C819EA6B1sha3_384: 849e7e972ab85bb3114dc95019b852df6561e5894f5956897a6c9ee1ae6193794c1e2c0ba50af5ff3b2e10131ea2463fep_bytes: e8d2230000e917feffff8b44240433c9timestamp: 2011-01-31 02:30:59

Version Info:

0: [No Data]

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

Lionic Trojan.Win32.Buterat.lDnL
DrWeb Trojan.Winlock.6426
MicroWorld-eScan Gen:Variant.Strictor.4845
FireEye Generic.mg.7ea822fb43de0c4c
CAT-QuickHeal Trojan.Vundo.Gen
ALYac Gen:Variant.Strictor.4845
Cylance Unsafe
Zillya Trojan.Jorik.Win32.119751
Sangfor Trojan.Win32.Save.a
K7AntiVirus Spyware ( 002edad51 )
K7GW Spyware ( 002edad51 )
CrowdStrike win/malicious_confidence_90% (W)
BitDefenderTheta Gen:NN.ZexaF.34786.hqW@amqj@3ak
VirIT Trojan.Win32.SHeur4.ALOY
Cyren W32/Zbot.EW.gen!Eldorado
Symantec ML.Attribute.HighConfidence
Elastic malicious (high confidence)
ESET-NOD32 Win32/SpyVoltar.A
TrendMicro-HouseCall TSPY_RANSOM_CA0835BF.TOMC
Paloalto generic.ml
ClamAV Win.Trojan.Agent-385442
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Strictor.4845
NANO-Antivirus Trojan.Win32.Winlock.bbxako
SUPERAntiSpyware Trojan.Agent/Gen-SpyVoltar
Avast Win32:Buterat-OY [Trj]
Tencent Malware.Win32.Gencirc.114ba03e
Ad-Aware Gen:Variant.Strictor.4845
Emsisoft Gen:Variant.Strictor.4845 (B)
Comodo Malware@#1hsuctthav8ya
VIPRE Gen:Variant.Strictor.4845
TrendMicro TSPY_RANSOM_CA0835BF.TOMC
McAfee-GW-Edition BehavesLike.Win32.Generic.cc
Trapmine malicious.high.ml.score
Sophos ML/PE-A + Mal/Vundo-AJ
SentinelOne Static AI – Malicious PE
GData Gen:Variant.Strictor.4845
Jiangmin Trojan/Jorik.eloc
Webroot W32.Trojan.Agent.Gen
Avira TR/Crypt.XPACK.Gen7
MAX malware (ai score=85)
Antiy-AVL Trojan/Generic.ASMalwS.35A
Kingsoft Win32.Heur.KVM011.a.(kcloud)
ViRobot Trojan.Win32.A.PornoAsset.126976.AU
Microsoft Trojan:Win32/Vundo.QA
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.SpyVoltar.R28864
McAfee Generic BackDoor.acz
TACHYON Trojan/W32.Jorik.126976.BB
VBA32 Hoax.PornoAsset
APEX Malicious
Rising [email protected] (RDML:6kOPdPTg81j36fein45rCw)
Ikarus Trojan.Win32.Agent
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/SpyVoltar.A!tr
AVG Win32:Buterat-OY [Trj]
Cybereason malicious.b43de0
Panda Generic Malware

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

About the author

Robert Bailey

Security engineer focused on malware behavior, removal workflows, and Windows hardening. Robert reviews threat articles for practical accuracy, checking detection names, symptoms, and cleanup steps before publication.

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