Trojan:MSIL/Polyransom.psyF!MTB

Seeing the Trojan:MSIL/Polyransom.psyF!MTB detection usually means that your computer is in big danger. This malware 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 specific steps that must be taken as soon as possible.

Trojan:MSIL/Polyransom.psyF!MTB detection is a malware detection you can spectate in your computer. It frequently appears after the provoking activities on your PC – opening the dubious email messages, clicking the advertisement in the Internet or installing the program from dubious sources. From the instance it appears, you have a short time to act until it begins its harmful action. And be sure – it is much better not to await these harmful actions.

What is Trojan:MSIL/Polyransom.psyF!MTB virus?

Trojan:MSIL/Polyransom.psyF!MTB is ransomware-type malware. It looks for the documents on your disk drive, ciphers it, and then asks you to pay the ransom for receiving the decryption key. Besides making your documents inaccessible, this malware also does a lot of damage to your system. It changes the networking setups in order to stop you from reading the elimination guidelines or downloading the anti-malware program. In some cases, Trojan:MSIL/Polyransom.psyF!MTB can additionally prevent the launching of anti-malware programs.

Trojan:MSIL/Polyransom.psyF!MTB Summary

In summary, Trojan:MSIL/Polyransom.psyF!MTB ransomware actions in the infected PC are next:

  • Authenticode signature is invalid;
  • Encrypting the documents located on the victim’s drives — so the victim cannot check these documents;
  • Blocking the launching of .exe files of security tools
  • Blocking the launching of installation files of security tools

Ransomware has actually been a horror story for the last 4 years. It is difficult to imagine a more harmful virus for both individual users and businesses. The algorithms utilized in Trojan:MSIL/Polyransom.psyF!MTB (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 already exists, and possibly will exist. However, that malware does not do all these bad things without delay – it can take up to several hours to cipher all of your files. Thus, seeing the Trojan:MSIL/Polyransom.psyF!MTB detection is a clear signal that you have to start the clearing procedure.

Where did I get the Trojan:MSIL/Polyransom.psyF!MTB?

Usual methods of Trojan:MSIL/Polyransom.psyF!MTB distribution are common for all other ransomware examples. Those are one-day landing sites where victims are offered to download the free software, so-called bait e-mails and hacktools. Bait emails are a quite modern strategy in malware distribution – you receive the email that mimics some regular notifications about shipments or bank service conditions updates. Within the email, there is a corrupted MS Office file, or a 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 fairly uncomplicated, but still needs a lot of focus. Malware can hide in different spots, and it is far better to prevent it even before it goes into your system than to trust in an anti-malware program. Simple cybersecurity knowledge is just an important item in the modern world, even if your interaction with a computer remains on YouTube videos. That may keep you a lot of money and time which you would spend while trying to find a solution.

Trojan:MSIL/Polyransom.psyF!MTB malware technical details

File Info:

name: 854D19F289EC38ED20FF.mlwpath: /opt/CAPEv2/storage/binaries/ffb1cf0925183c7c1511bd6532743e35bc51f5c2266d0df6ca355d2bc9349a66crc32: E8E61D82md5: 854d19f289ec38ed20ffd484b5a340aesha1: 2cf183948890a0f4edd068a61cf2d45c24ef2f6esha256: ffb1cf0925183c7c1511bd6532743e35bc51f5c2266d0df6ca355d2bc9349a66sha512: d60db698c2324c3e9d9430510bb13bb9ec800bb697ac27138aa54ada37a0d35a692cb79a66d8a7b58e86d78ab856f071c1d60811463d85696f02363761ff472assdeep: 768:zfzq4i2QiASwMAaTsNJnIDpJiV3zqsO9mZydalfuV3lVwS9b4G:zLq4ih7sSJeQFzqr9mOaFufVw8cGtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T12403F91CBAEE415AD4BBEFF86CFC89998DFAE7121405F56B5480070B5D52F80CA4363Asha3_384: 1543348ed589632586f8920e9143a9d1be9f291d1773b10e7f552db277fbfc7756a5c3f18f456ebe8f1b64422046dd08ep_bytes: ff250020400000000000000000000000timestamp: 2023-05-04 18:23:52

Version Info:

Translation: 0x0000 0x04b0Comments: CmRccServiceFileDescription: CmRccServiceFileVersion: 2.4.7.1InternalName: wIig9xJ6AWLegalCopyright: OriginalFilename: wIig9xJ6AWProductName: CmRccServiceProductVersion: 2.4.7.1Assembly Version: 2.4.7.1

Trojan:MSIL/Polyransom.psyF!MTB also known as:

Lionic Trojan.Win32.Agent.Y!c
Elastic malicious (high confidence)
MicroWorld-eScan IL:Trojan.MSILZilla.23258
ClamAV Win.Packed.Msilzilla-9953300-0
McAfee GenericRXUK-YY!854D19F289EC
Cylance unsafe
VIPRE IL:Trojan.MSILZilla.23258
Sangfor Suspicious.Win32.Save.a
K7AntiVirus Trojan ( 005955001 )
Alibaba Trojan:MSIL/Polyransom.8c7a21eb
K7GW Trojan ( 005955001 )
Cybereason malicious.48890a
VirIT Trojan.Win32.MSIL_Heur.A
Cyren W32/MSIL_Agent.DHY.gen!Eldorado
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of MSIL/Agent.VIF
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky HEUR:Trojan.MSIL.Agent.gen
BitDefender IL:Trojan.MSILZilla.23258
Avast Win32:MalwareX-gen [Trj]
Tencent Trojan-Ransom.MSIL.PolyRansom.16000547
Emsisoft IL:Trojan.MSILZilla.23258 (B)
F-Secure Heuristic.HEUR/AGEN.1305561
DrWeb Trojan.PackedNET.1575
TrendMicro TROJ_GEN.R03BC0DEK23
McAfee-GW-Edition BehavesLike.Win32.Generic.nm
Trapmine malicious.moderate.ml.score
FireEye Generic.mg.854d19f289ec38ed
Sophos Mal/DownLdr-FL
SentinelOne Static AI – Malicious PE
GData IL:Trojan.MSILZilla.23258
Avira HEUR/AGEN.1305561
MAX malware (ai score=84)
Arcabit IL:Trojan.MSILZilla.D5ADA
ZoneAlarm HEUR:Trojan.MSIL.Agent.gen
Microsoft Trojan:MSIL/Polyransom.psyF!MTB
Google Detected
AhnLab-V3 Trojan/Win.Mardom.C5109384
Acronis suspicious
VBA32 OScope.Trojan.MSIL.Basic.8
ALYac IL:Trojan.MSILZilla.23258
Malwarebytes Trojan.Crypt
Panda Trj/GdSda.A
TrendMicro-HouseCall TROJ_GEN.R03BC0DEK23
Rising Trojan.Agent!8.B1E (CLOUD)
Ikarus Trojan.MSIL.Agent
MaxSecure Trojan.Malware.300983.susgen
Fortinet MSIL/Agent.VIF!tr
BitDefenderTheta Gen:NN.ZemsilF.36196.cm0@a8x@Sdm
AVG Win32:MalwareX-gen [Trj]
DeepInstinct MALICIOUS
CrowdStrike win/malicious_confidence_100% (W)

How to remove Trojan:MSIL/Polyransom.psyF!MTB?

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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