Trojan:Win32/FormBook.RR!MTB

Spectating the Trojan:Win32/FormBook.RR!MTB malware detection usually means that your system is in big danger. This malware can correctly be named as ransomware – type of malware which ciphers your files and asks you to pay for their decryption. Stopping it requires some peculiar steps that must be done as soon as possible.

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

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

Trojan:Win32/FormBook.RR!MTB is ransomware-type malware. It looks for the files on your disk, ciphers it, and after that asks you to pay the ransom for getting the decryption key. Besides making your documents locked, this malware additionally does a lot of harm to your system. It changes the networking settings in order to stop you from reading the removal tutorials or downloading the anti-malware program. In some cases, Trojan:Win32/FormBook.RR!MTB can additionally block the setup of anti-malware programs.

Trojan:Win32/FormBook.RR!MTB Summary

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

  • SetUnhandledExceptionFilter detected (possible anti-debug);
  • Yara rule detections observed from a process memory dump/dropped files/CAPE;
  • Guard pages use detected – possible anti-debugging.;
  • Attempts to connect to a dead IP:Port (255 unique times);
  • Dynamic (imported) function loading detected;
  • Enumerates running processes;
  • The binary contains an unknown PE section name indicative of packing;
  • Authenticode signature is invalid;
  • Encrypting the documents kept on the victim’s disk drive — so the victim cannot use these documents;
  • Blocking the launching of .exe files of anti-malware apps
  • Blocking the launching of installation files of anti-virus programs

Ransomware has actually been a major problem for the last 4 years. It is hard to picture a more harmful malware for both individual users and organizations. The algorithms used in Trojan:Win32/FormBook.RR!MTB (usually, RHA-1028 or AES-256) are not hackable – with minor exclusions. To hack it with a brute force, you need more time than our galaxy already exists, and possibly will exist. But that malware does not do all these horrible things instantly – it can require up to a few hours to cipher all of your files. Hence, seeing the Trojan:Win32/FormBook.RR!MTB detection is a clear signal that you have to start the removal process.

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

Common tactics of Trojan:Win32/FormBook.RR!MTB spreading are usual for all other ransomware examples. Those are one-day landing sites where victims are offered to download and install the free app, so-called bait e-mails and hacktools. Bait emails are a pretty modern method in malware distribution – you receive the email that mimics some standard notifications about shippings or bank service conditions changes. Within the e-mail, there is a malicious MS Office file, or a web link which leads to the exploit landing site.

Malicious email spam

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

Avoiding it looks pretty uncomplicated, but still needs tons of attention. Malware can hide in different spots, and it is better to stop it even before it gets into your PC than to depend on an anti-malware program. Essential cybersecurity knowledge is just an important thing in the modern world, even if your interaction with a computer remains on YouTube videos. That may keep you a lot of time and money which you would certainly spend while looking for a fix guide.

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

File Info:

name: FD5335CB2048105926A3.mlwpath: /opt/CAPEv2/storage/binaries/ad49b2d15d6f583f1b166ce4082e71f0cb005ca2644670938ab947c3e7d08248crc32: C95BAC32md5: fd5335cb2048105926a37ef5b18507acsha1: b84872e64e1a0b056cb3e8be620560adf4d4f785sha256: ad49b2d15d6f583f1b166ce4082e71f0cb005ca2644670938ab947c3e7d08248sha512: f3c74dde40f04a985f0f9234e1f2a3bd25e551c97cfeff3e03277fe722a0be361a3ff8f0dd16b0607b4df468b8c893edea3c9dfd5c93d67661ce729741ba83f1ssdeep: 6144:N1N/Dax/aVcaP4KeX7N2wD4QTqI7AGER6ifSHzqVDAUBlWLbOeubt2gX:N1BDaxiVcaP4cy1Td7g6ifSHPubt2ktype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T12425D811B95012B9F889417709FF3788839868924FE991D7208F2DFEDC2BBD4E6B51C6sha3_384: 4e3b386d585e5a73c585f37a2e9cfdf3500140fd7cd519e0d9ea87e9c1ab790f1f515115b0bfb57988cf6c64dbc0d3f0ep_bytes: e9390d0800e92c820100e987cb0400e9timestamp: 2022-06-05 15:04:38

Version Info:

0: [No Data]

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

Bkav W32.AIDetect.malware2
Lionic Trojan.Win32.Agentb.4!c
Elastic malicious (moderate confidence)
MicroWorld-eScan Gen:Variant.Midie.109207
FireEye Gen:Variant.Midie.109207
ALYac Gen:Variant.Midie.109207
Cylance Unsafe
Sangfor Trojan.Win32.Agentb.gen
K7AntiVirus Trojan ( 0058f1b01 )
Alibaba Trojan:Win32/FormBook.0657fea6
K7GW Trojan ( 0058f1b01 )
Cybereason malicious.b20481
BitDefenderTheta Gen:NN.ZexaF.34742.9KW@aywtmDgi
ESET-NOD32 a variant of Win32/Filecoder.OKE
APEX Malicious
Paloalto generic.ml
Kaspersky HEUR:Trojan.Win32.Agentb.gen.56126999.Silent
BitDefender Gen:Variant.Midie.109207
Ad-Aware Gen:Variant.Midie.109207
TrendMicro Ransom.Win32.CONTI.SMYXCCUA
McAfee-GW-Edition BehavesLike.Win32.Generic.dm
Microsoft Trojan:Win32/FormBook.RR!MTB
GData Gen:Variant.Midie.109207
Cynet Malicious (score: 100)
McAfee Artemis!FD5335CB2048
MAX malware (ai score=85)
VBA32 BScope.TrojanRansom.Cryptor
Malwarebytes Malware.AI.1740871635
Tencent Win32.Trojan.Filecoder.Efap
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Filecoder.OKE!tr.ransom
Panda Trj/GdSda.A
CrowdStrike win/malicious_confidence_60% (W)

How to remove Trojan:Win32/FormBook.RR!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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