Trojan:Win32/FormBook.SISN!MTB Virus Removal

Spectating the Trojan:Win32/FormBook.SISN!MTB malware detection usually means that your system is in big danger. This computer virus can correctly be named as ransomware – sort of malware which encrypts your files and forces you to pay for their decryption. Deleteing it requires some unusual steps that must be done as soon as possible.

Trojan:Win32/FormBook.SISN!MTB detection is a malware detection you can spectate in your computer. It generally appears after the preliminary activities on your PC – opening the untrustworthy email, clicking the banner in the Internet or setting up the program from suspicious sources. From the moment it shows up, you have a short time to act before it begins its harmful activity. And be sure – it is far better not to wait for these malicious effects.

What is Trojan:Win32/FormBook.SISN!MTB virus?

Trojan:Win32/FormBook.SISN!MTB is ransomware-type malware. It searches for the files on your computer, ciphers it, and then asks you to pay the ransom for getting the decryption key. Besides making your documents locked, this malware also does a ton of harm to your system. It changes the networking setups in order to stop you from checking out the elimination manuals or downloading the anti-malware program. Sometimes, Trojan:Win32/FormBook.SISN!MTB can even stop the setup of anti-malware programs.

Trojan:Win32/FormBook.SISN!MTB Summary

In total, Trojan:Win32/FormBook.SISN!MTB virus activities in the infected computer are next:

  • Behavioural detection: Executable code extraction – unpacking;
  • Executed a command line with /C or /R argument to terminate command shell on completion which can be used to hide execution;
  • Uses Windows utilities for basic functionality;
  • Reads data out of its own binary image;
  • CAPE extracted potentially suspicious content;
  • The binary contains an unknown PE section name indicative of packing;
  • The binary likely contains encrypted or compressed data.;
  • Authenticode signature is invalid;
  • Uses Windows utilities to create a scheduled task;
  • Detects Bochs through the presence of a registry key;
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Ciphering the documents kept on the victim’s disk drive — so the victim cannot use 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 headache for the last 4 years. It is challenging to imagine a more hazardous virus for both individual users and companies. The algorithms utilized in Trojan:Win32/FormBook.SISN!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. But that virus does not do all these horrible things immediately – it can require up to several hours to cipher all of your documents. Therefore, seeing the Trojan:Win32/FormBook.SISN!MTB detection is a clear signal that you have to start the removal process.

Where did I get the Trojan:Win32/FormBook.SISN!MTB?

Routine ways of Trojan:Win32/FormBook.SISN!MTB spreading are usual for all other ransomware variants. Those are one-day landing sites where victims are offered to download the free software, so-called bait emails and hacktools. Bait emails are a quite modern method in malware spreading – you receive the e-mail that imitates some routine notifications about shipments or bank service conditions shifts. Within the e-mail, there is a corrupted 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.

Avoiding it looks quite easy, however, still demands tons of focus. Malware can hide in various spots, and it is much better to prevent it even before it invades your PC than to rely on an anti-malware program. Simple cybersecurity knowledge is just an important thing in the modern-day world, even if your interaction with a PC remains on YouTube videos. That can save you a lot of money and time which you would spend while seeking a fixing guide.

Trojan:Win32/FormBook.SISN!MTB malware technical details

File Info:

name: 281E7119D896EF9964CA.mlwpath: /opt/CAPEv2/storage/binaries/5c514c011302327b265829b27c9bbf8454df2abfa46b78e158c3c08d526ec82acrc32: 3ADDCF72md5: 281e7119d896ef9964ca56c7a4aefbe6sha1: d735b1c49c885dce15aea5fa176a39377eaa682fsha256: 5c514c011302327b265829b27c9bbf8454df2abfa46b78e158c3c08d526ec82asha512: 2a1f88f6881d5b9a8c53ee6439474b9d6df245f0862168aa9c983893e9148cad73f5c681882d3c00bb2c6679698448d4f962da74bb33276864702fbb1c0b9be1ssdeep: 12288:I6gWkN291E7PI5BuCKcNzYB3zJIRFW33FbkaZy4IyAuoF2:zKE1WPIPuCKcNeJIRFW33FYaZ4type: PE32 executable (console) Intel 80386, for MS Windowstlsh: T154C4F19731AF00F0C77C54712124BAE76A3DF73D9949D5EB678862B60EF83D1EA04826sha3_384: 5118d5e18baf34afc101d8b51002b31ab9fd4d3faf694c3a4e40f470ff42ad34ee55448bdfad96924f8720d272525c41ep_bytes: e88a020000e988feffff558beca11840timestamp: 2020-09-09 03:13:17

Version Info:

0: [No Data]

Trojan:Win32/FormBook.SISN!MTB also known as:

Bkav W32.AIDetectMalware
Lionic Trojan.Multi.Generic.4!c
MicroWorld-eScan Gen:Variant.Mikey.115448
FireEye Generic.mg.281e7119d896ef99
CAT-QuickHeal Ransomware.Tescrypt.WR5
McAfee GenericRXLZ-OY!281E7119D896
Cylance unsafe
Zillya Trojan.GenKryptik.Win32.57793
Sangfor Suspicious.Win32.Save.a
K7AntiVirus Trojan ( 0056df931 )
Alibaba TrojanSpy:Win32/Lokibot.bdf18fd8
K7GW Trojan ( 0056df931 )
Cybereason malicious.9d896e
BitDefenderTheta Gen:NN.ZexaF.36348.JyW@aqAlIZni
Symantec ML.Attribute.HighConfidence
Elastic malicious (high confidence)
ESET-NOD32 a variant of Win32/Kryptik.HPMM
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky Trojan-PSW.MSIL.Agensla.vzy
BitDefender Gen:Variant.Mikey.115448
NANO-Antivirus Trojan.Win32.Agensla.hwcnjz
Avast Win32:TrojanX-gen [Trj]
Tencent Win32.Trojan-Spy.Noon.Hajl
TACHYON Trojan-PWS/W32.AgentTesla.586752
Sophos Mal/Generic-S
F-Secure Trojan.TR/Dropper.Gen
DrWeb Trojan.Inject3.59041
VIPRE Gen:Variant.Mikey.115448
McAfee-GW-Edition GenericRXLZ-OY!281E7119D896
Trapmine malicious.moderate.ml.score
Emsisoft Gen:Variant.Mikey.115448 (B)
SentinelOne Static AI – Suspicious PE
GData Gen:Variant.Mikey.115448
Jiangmin Trojan.PSW.Stelega.h
Avira TR/Dropper.Gen
Antiy-AVL Trojan[PSW]/Win32.Stelega
Arcabit Trojan.Mikey.D1C2F8
ZoneAlarm Trojan-PSW.MSIL.Agensla.vzy
Microsoft Trojan:Win32/FormBook.SISN!MTB
Google Detected
AhnLab-V3 Malware/Win32.RL_Generic.R352215
ALYac Gen:Variant.Mikey.115448
MAX malware (ai score=83)
VBA32 BScope.Trojan.Wacatac
Malwarebytes Trojan.Injector
Panda Trj/Genetic.gen
Zoner Trojan.Win32.93532
Rising Trojan.Bluteal!8.EFE7 (TFE:5:Po5QQZyAfJB)
Ikarus Trojan.Win32.Krypt
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Kryptik.HGAI!tr
AVG Win32:TrojanX-gen [Trj]
DeepInstinct MALICIOUS
CrowdStrike win/malicious_confidence_100% (W)

How to remove Trojan:Win32/FormBook.SISN!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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