Trojan:MSIL/FormBook.ACA!MTB Virus Removal

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

Seeing the Trojan:MSIL/FormBook.ACA!MTB malware detection usually means that your PC is in big danger. This computer virus can correctly be identified as ransomware – type of malware which ciphers your files and forces you to pay for their decryption. Removing it requires some peculiar steps that must be done as soon as possible.

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Trojan:MSIL/FormBook.ACA!MTB detection is a virus detection you can spectate in your system. It generally shows up after the provoking activities on your PC – opening the untrustworthy e-mail, clicking the banner in the Internet or installing the program from unreliable sources. From the second it appears, you have a short time to do something about it until it begins its malicious activity. And be sure – it is much better not to wait for these destructive things.

What is Trojan:MSIL/FormBook.ACA!MTB virus?

Trojan:MSIL/FormBook.ACA!MTB is ransomware-type malware. It searches for the documents on your disks, encrypts it, and after that asks you to pay the ransom for receiving the decryption key. Besides making your files inaccessible, this virus also does a ton of harm to your system. It alters the networking settings in order to prevent you from reading the removal articles or downloading the anti-malware program. In some cases, Trojan:MSIL/FormBook.ACA!MTB can additionally block the launching of anti-malware programs.

Trojan:MSIL/FormBook.ACA!MTB Summary

In total, Trojan:MSIL/FormBook.ACA!MTB virus activities in the infected system are next:

  • CAPE extracted potentially suspicious content;
  • The binary likely contains encrypted or compressed data.;
  • Authenticode signature is invalid;
  • Anomalous .NET characteristics;
  • Encrypting the files kept on the victim’s drives — so the victim cannot open these files;
  • Blocking the launching of .exe files of anti-virus apps
  • Blocking the launching of installation files of anti-virus apps

Ransomware has actually been a headache for the last 4 years. It is difficult to imagine a more dangerous malware for both individuals and companies. The algorithms used in Trojan:MSIL/FormBook.ACA!MTB (typically, 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. But that virus does not do all these horrible things without delay – it may take up to a few hours to cipher all of your documents. Thus, seeing the Trojan:MSIL/FormBook.ACA!MTB detection is a clear signal that you must start the clearing process.

Where did I get the Trojan:MSIL/FormBook.ACA!MTB?

General ways of Trojan:MSIL/FormBook.ACA!MTB injection are typical for all other ransomware examples. Those are one-day landing web pages where users are offered to download and install the free app, so-called bait e-mails and hacktools. Bait e-mails are a quite modern strategy in malware spreading – you get the e-mail that mimics some standard notifications about shippings or bank service conditions modifications. Inside of the email, there is a corrupted MS Office file, or a link which opens the exploit landing site.

Malicious email spam

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

Preventing it looks pretty easy, but still demands a lot of recognition. Malware can hide in different spots, and it is far better to stop it even before it gets into your computer than to trust in an anti-malware program. Essential cybersecurity knowledge is just an important thing in the modern-day world, even if your relationship with a PC stays on YouTube videos. That can keep you a lot of time and money which you would certainly spend while trying to find a fix guide.

Trojan:MSIL/FormBook.ACA!MTB malware technical details

File Info:

name: 21113FA0C8640C0CCAAA.mlw
path: /opt/CAPEv2/storage/binaries/3b7a97cc542f21664ff9c45645b7f0ad4cbdf8cdce0ab4be4973ffac60b68de8
crc32: 76937828
md5: 21113fa0c8640c0ccaaa06f9ba045133
sha1: 802e1a2a2ae111113797027788d7c72d0744173e
sha256: 3b7a97cc542f21664ff9c45645b7f0ad4cbdf8cdce0ab4be4973ffac60b68de8
sha512: 2f82b00ad9d63f2aad1327b7d412218e6524cc4cb6e1e19d5ce95d9019b254ca91141ac071e0b9978043c6d3faab5db100157d47113d4661139ae1d58dd3252c
ssdeep: 12288:ozBO5ZZC/W2n96vxzquj9e2s7rrX/QWGq/GKVwzpMC3RQ6jhiocFs:ozqTC/fgHFsXrX/Wq/jVwqC3yGi
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T111E401AC97A5C6A7C2A80BBD401661883F7444E3367AC63DDF97409EFB4BB080D956C7
sha3_384: 6f680c0a91040231d24a57c78daccf1a0a4af642d9fa7f2e79ec6043eeeba7fea591590c4e050b320e47f896f10f79d0
ep_bytes: ff250020400000000000000000000000
timestamp: 2023-04-19 01:57:55

Version Info:

Translation: 0x0000 0x04b0
FileDescription:
FileVersion: 0.0.0.0
InternalName: UEST.exe
LegalCopyright:
OriginalFilename: UEST.exe
ProductVersion: 0.0.0.0
Assembly Version: 0.0.0.0

Trojan:MSIL/FormBook.ACA!MTB also known as:

BkavW32.AIDetectMalware.CS
LionicTrojan.Win32.Stealer.12!c
Elasticmalicious (high confidence)
DrWebTrojan.PackedNET.1965
MicroWorld-eScanTrojan.Ransom.Loki.BYX
FireEyeGeneric.mg.21113fa0c8640c0c
CAT-QuickHealTrojan.GenericFC.S30154624
SkyhighBehavesLike.Win32.Generic.jc
McAfeeGenericRXVV-PO!21113FA0C864
MalwarebytesInjector.Trojan.MSIL.DDS
ZillyaTrojan.Stealer.Win32.59390
SangforSuspicious.Win32.Save.a
K7AntiVirusTrojan ( 005a3d621 )
AlibabaTrojanPSW:MSIL/Stealer.8abcd6bb
K7GWTrojan ( 005a3d621 )
Cybereasonmalicious.a2ae11
ArcabitTrojan.Ransom.Loki.BYX
BitDefenderThetaGen:NN.ZemsilF.36744.Rm0@aG3K@Ue
VirITTrojan.Win32.MSIL_Heur.A
SymantecScr.Malcode!gdn34
ESET-NOD32a variant of MSIL/Injector.WFX
APEXMalicious
CynetMalicious (score: 100)
KasperskyHEUR:Trojan-PSW.MSIL.Stealer.gen
BitDefenderTrojan.Ransom.Loki.BYX
AvastWin32:PWSX-gen [Trj]
TencentMalware.Win32.Gencirc.13bfa526
SophosTroj/Krypt-XE
F-SecureTrojan.TR/Dropper.MSIL.Gen
VIPRETrojan.Ransom.Loki.BYX
EmsisoftTrojan.Ransom.Loki.BYX (B)
IkarusTrojan-Spy.Agent
GoogleDetected
AviraTR/Dropper.MSIL.Gen
Antiy-AVLTrojan/MSIL.Injector
MicrosoftTrojan:MSIL/FormBook.ACA!MTB
ZoneAlarmHEUR:Trojan-PSW.MSIL.Stealer.gen
GDataTrojan.Ransom.Loki.BYX
VaristW32/MSIL_Agent.EUS.gen!Eldorado
AhnLab-V3Trojan/Win.Injection.C5415069
ALYacTrojan.Ransom.Loki.BYX
MAXmalware (ai score=87)
VBA32TrojanLoader.MSIL.DaVinci.Heur
Cylanceunsafe
PandaTrj/Chgt.AD
RisingMalware.Obfus/MSIL@AI.96 (RDM.MSIL2:B2kcXRcMtz0b408FMxCSxA)
SentinelOneStatic AI – Malicious PE
MaxSecureTrojan.Malware.74396735.susgen
FortinetMSIL/Kryptik.AIRP!tr
AVGWin32:PWSX-gen [Trj]
DeepInstinctMALICIOUS
CrowdStrikewin/malicious_confidence_100% (W)

How to remove Trojan:MSIL/FormBook.ACA!MTB?

Trojan:MSIL/FormBook.ACA!MTB malware is very difficult to remove by hand. It stores its data in a variety of locations throughout the disk, and can get back itself from one of the elements. Additionally, numerous modifications in the registry, networking settings and Group Policies are quite hard to locate and change to the original. It is far better to utilize a specific app – exactly, an anti-malware tool. GridinSoft Anti-Malware will definitely fit the best for virus removal purposes.

Remove Trojan:MSIL/FormBook.ACA!MTB with Gridinsoft Anti-Malware

We have also been using this software on our systems ever since, and it has always been successful in detecting viruses. It has blocked the most common Trojans as shown from our tests with the software, and we assure you that it can remove Trojan:MSIL/FormBook.ACA!MTB as well as other malware hiding on your computer.

Gridinsoft Anti-Malware - Main Screen

To use Gridinsoft for remove malicious threats, follow the steps below:

1. Begin by downloading Gridinsoft Anti-Malware, accessible via the blue button below or directly from the official website gridinsoft.com.

2.Once the Gridinsoft setup file (setup-gridinsoft-fix.exe) is downloaded, execute it by clicking on the file.

setup-gridinsoft-fix.exe

3.Follow the installation setup wizard's instructions diligently.

Gridinsoft Setup Wizard

4. Access the "Scan Tab" on the application's start screen and launch a comprehensive "Full Scan" to examine your entire computer. This inclusive scan encompasses the memory, startup items, the registry, services, drivers, and all files, ensuring that it detects malware hidden in all possible locations.

Scan for Trojan:MSIL/FormBook.ACA!MTB Trojans

Be patient, as the scan duration depends on the number of files and your computer's hardware capabilities. Use this time to relax or attend to other tasks.

5. Upon completion, Anti-Malware will present a detailed report containing all the detected malicious items and threats on your PC.

The Trojan:MSIL/FormBook.ACA!MTB was Found

6. Select all the identified items from the report and confidently click the "Clean Now" button. This action will safely remove the malicious files from your computer, transferring them to the secure quarantine zone of the anti-malware program to prevent any further harmful actions.

The Trojan:MSIL/FormBook.ACA!MTB has been removed

8. If prompted, restart your computer to finalize the full system scan procedure. This step is crucial to ensure thorough removal of any remaining threats. After the restart, Gridinsoft Anti-Malware will open and display a message confirming the completion of the scan.

Remember Gridinsoft offers a 6-day free trial. This means you can take advantage of the trial period at no cost to experience the full benefits of the software and prevent any future malware infections on your system. Embrace this opportunity to fortify your computer's security without any financial commitment.

Trojan Killer for “Trojan:MSIL/FormBook.ACA!MTB” removal on locked PC

In situations where it becomes impossible to download antivirus applications directly onto the infected computer due to malware blocking access to websites, an alternative solution is to utilize the Trojan Killer application.

Trojan Killer - Main View

There is a really little number of security tools that are able to be set up on the USB drives, and antiviruses that can do so in most cases require to obtain quite an expensive license. For this instance, I can recommend you to use another solution of GridinSoft - Trojan Killer Portable. It has a 14-days cost-free trial mode that offers the entire features of the paid version. This term will definitely be 100% enough to wipe malware out.

Trojan Killer is a valuable tool in your cybersecurity arsenal, helping you to effectively remove malware from infected computers. Now, we will walk you through the process of using Trojan Killer from a USB flash drive to scan and remove malware on an infected PC. Remember, always obtain permission to scan and remove malware from a computer that you do not own.

Step 1: Download & Install Trojan Killer on a Clean Computer:

1. Go to the official GridinSoft website (gridinsoft.com) and download Trojan Killer to a computer that is not infected.

Download Trojan Killer

2. Insert a USB flash drive into this computer.

3. Install Trojan Killer to the "removable drive" following the on-screen instructions.

Install Trojan Killer to Removable Drive

4. Once the installation is complete, launch Trojan Killer.

Step 2: Update Signature Databases:

5. After launching Trojan Killer, ensure that your computer is connected to the Internet.

6. Click "Update" icon to download the latest signature databases, which will ensure the tool can detect the most recent threats.

Click Update Button

Step 3: Scan the Infected PC:

7. Safely eject the USB flash drive from the clean computer.

8. Boot the infected computer to the Safe Mode.

9. Insert the USB flash drive.

10. Run tk.exe

11. Once the program is open, click on "Full Scan" to begin the malware scanning process.

Searching Trojan:MSIL/FormBook.ACA!MTB Virus

Step 4: Remove Found Threats:

12. After the scan is complete, Trojan Killer will display a list of detected threats.

Searching Trojan:MSIL/FormBook.ACA!MTB Finished

13. Click on "Cure PC!" to remove the identified malware from the infected PC.

14. Follow any additional on-screen prompts to complete the removal process.

Restart needed

Step 5: Restart Your Computer:

15. Once the threats are removed, click on "Restart PC" to reboot your computer.

16. Remove the USB flash drive from the infected computer.

Congratulations on effectively removing Trojan:MSIL/FormBook.ACA!MTB and the concealed threats from your computer! You can now have peace of mind, knowing that they won't resurface again. Thanks to Gridinsoft's capabilities and commitment to cybersecurity, your system is now protected.

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About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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