Trojan:MSIL/Formbook.MK!MTB Virus Removal

Spectating the Trojan:MSIL/Formbook.MK!MTB detection name means that your PC is in big danger. This computer virus can correctly be identified as ransomware – type of malware which encrypts your files and forces you to pay for their decryption. Stopping it requires some peculiar steps that must be taken as soon as possible.

Trojan:MSIL/Formbook.MK!MTB detection is a malware detection you can spectate in your computer. It generally appears after the provoking activities on your PC – opening the untrustworthy email messages, clicking the advertisement in the Internet or mounting the program from suspicious sources. From the moment it shows up, you have a short time to do something about it before it begins its malicious action. And be sure – it is much better not to await these harmful effects.

What is Trojan:MSIL/Formbook.MK!MTB virus?

Trojan:MSIL/Formbook.MK!MTB is ransomware-type malware. It looks for the files on your disk drives, ciphers it, and then asks you to pay the ransom for getting the decryption key. Besides making your files inaccessible, this virus additionally does a ton of damage to your system. It changes the networking setups in order to stop you from reading the removal manuals or downloading the anti-malware program. In rare cases, Trojan:MSIL/Formbook.MK!MTB can also stop the setup of anti-malware programs.

Trojan:MSIL/Formbook.MK!MTB Summary

In total, Trojan:MSIL/Formbook.MK!MTB virus actions in the infected PC are next:

  • Behavioural detection: Executable code extraction – unpacking;
  • CAPE extracted potentially suspicious content;
  • The binary likely contains encrypted or compressed data.;
  • Authenticode signature is invalid;
  • Mimics icon used for popular non-executable file format;
  • Encrypting the documents located on the victim’s disk drive — so the victim cannot check these files;
  • Blocking the launching of .exe files of security tools
  • Blocking the launching of installation files of security tools

Ransomware has actually been a headache for the last 4 years. It is difficult to imagine a more harmful virus for both individual users and companies. The algorithms utilized in Trojan:MSIL/Formbook.MK!MTB (usually, 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 already exists, and possibly will exist. However, that malware does not do all these horrible things instantly – it can take up to several hours to cipher all of your documents. Therefore, seeing the Trojan:MSIL/Formbook.MK!MTB detection is a clear signal that you need to start the elimination procedure.

Where did I get the Trojan:MSIL/Formbook.MK!MTB?

Common methods of Trojan:MSIL/Formbook.MK!MTB spreading are standard for all other ransomware examples. Those are one-day landing web pages where users are offered to download and install the free program, so-called bait emails and hacktools. Bait emails are a relatively modern strategy in malware distribution – you receive the e-mail that imitates some standard notifications about deliveries or bank service conditions modifications. Inside of the e-mail, there is an infected 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.

Avoiding it looks quite easy, however, still demands tons of recognition. Malware can hide in different places, and it is much better to prevent it even before it goes into your PC than to rely upon an anti-malware program. Standard cybersecurity knowledge is just an essential item in the modern-day world, even if your relationship with a PC stays on YouTube videos. That can save you a great deal of time and money which you would spend while seeking a solution.

Trojan:MSIL/Formbook.MK!MTB malware technical details

File Info:

name: D355B5CBC96E3839AE43.mlwpath: /opt/CAPEv2/storage/binaries/27441aad8c0e8f1bc1006882afe2f340a1874e8579779c8fb566cf6b73846715crc32: 9CAEC0DCmd5: d355b5cbc96e3839ae43b5545f4a5764sha1: da623ea026796175dbc9cc2c6b042dac1967815asha256: 27441aad8c0e8f1bc1006882afe2f340a1874e8579779c8fb566cf6b73846715sha512: ca1c51a7b3bd8c4a3b89421baacd61e4dcff1818c4aae83aab0f478ada455cbb920c67a00e56bd344834748d25b08449a07ade7a2a3c63b7abb0965178d1851dssdeep: 12288:nHvXCd+Pco8NRXYUpxQZGasTYYljM2yDiSukIQnSob68pr0jZ8cVYtmmdZaYu:nPXY+H+Qw942yeSuiS2j0jZ5eDHdtype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T1EAD42291264EDF4AD8EE0AB5446D702113F5AD2AC851E38B5E49B9B33CF37809073E5Bsha3_384: 9046a1f379ea60839d0de30e4b2869550e945d72aa766656ef2c4dde3336e4ac4a4bb07894d76026db22bfd67405e74eep_bytes: ff250020400000000000000000000000timestamp: 2020-08-25 00:41:29

Version Info:

Translation: 0x0000 0x04b0Comments: CompanyName: FileDescription: ChessAnalyser.SatelliteFileVersion: 1.0.0.0InternalName: Wmb.exeLegalCopyright: Copyright © 2015LegalTrademarks: OriginalFilename: Wmb.exeProductName: ChessAnalyser.SatelliteProductVersion: 1.0.0.0Assembly Version: 1.0.0.0

Trojan:MSIL/Formbook.MK!MTB also known as:

Bkav W32.AIDetectMalware.CS
Lionic Trojan.MSIL.Agensla.i!c
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.Ransom.Loki.QR
FireEye Generic.mg.d355b5cbc96e3839
CAT-QuickHeal Trojan.YakbeexMSIL.ZZ4
Skyhigh BehavesLike.Win32.Generic.jc
McAfee Fareit-FYV!D355B5CBC96E
Cylance unsafe
Zillya Trojan.GenKryptik.Win32.55362
Sangfor Suspicious.Win32.Save.a
K7AntiVirus Trojan ( 0056d4361 )
Alibaba TrojanPSW:MSIL/Formbook.6d9a4f6c
K7GW Trojan ( 0056d4361 )
CrowdStrike win/malicious_confidence_100% (W)
VirIT Trojan.Win32.MSIL_Heur.A
Symantec Trojan.Formbook
ESET-NOD32 a variant of MSIL/Kryptik.XMH
Cynet Malicious (score: 100)
APEX Malicious
Kaspersky HEUR:Trojan-PSW.MSIL.Agensla.gen
BitDefender Trojan.Ransom.Loki.QR
NANO-Antivirus Trojan.Win32.Agensla.hthrdm
Avast Win32:MalwareX-gen [Trj]
Tencent Msil.Trojan-QQPass.QQRob.Jtgl
Sophos Mal/Generic-S
F-Secure Heuristic.HEUR/AGEN.1306097
DrWeb Trojan.PWS.Siggen2.53941
VIPRE Trojan.Ransom.Loki.QR
Trapmine suspicious.low.ml.score
Emsisoft Trojan.Ransom.Loki.QR (B)
Ikarus Trojan.Inject
Varist W32/Faker.F.gen!Eldorado
Avira HEUR/AGEN.1306097
Antiy-AVL Trojan[PSW]/MSIL.Agensla
Microsoft Trojan:MSIL/Formbook.MK!MTB
Arcabit Trojan.Ransom.Loki.QR
ZoneAlarm HEUR:Trojan-PSW.MSIL.Agensla.gen
GData Trojan.Ransom.Loki.QR
Google Detected
AhnLab-V3 Trojan/Win32.Kryptik.R349157
ALYac Trojan.Ransom.Loki.QR
MAX malware (ai score=86)
Malwarebytes Crypt.Trojan.MSIL.DDS
Panda Trj/GdSda.A
Rising Malware.Obfus/[email protected] (RDM.MSIL2:LZrWxxmkKFVf4ZOZBl8gqA)
Yandex Trojan.AvsArher.bSK66A
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Malware.300983.susgen
Fortinet MSIL/GenKryptik.ERDU!tr
AVG Win32:MalwareX-gen [Trj]
Cybereason malicious.026796
DeepInstinct MALICIOUS

How to remove Trojan:MSIL/Formbook.MK!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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