Troj/Formbook-A

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

What is Troj/Formbook-A infection?

In this post you will locate about the interpretation of Troj/Formbook-A as well as its negative influence on your computer system. Such ransomware are a kind of malware that is elaborated by on the internet scams to require paying the ransom by a target.

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Most of the situations, Troj/Formbook-A virus will advise its sufferers to launch funds transfer for the purpose of neutralizing the changes that the Trojan infection has introduced to the sufferer’s device.

Troj/Formbook-A Summary

These modifications can be as adheres to:

  • Executable code extraction. Cybercriminals often use binary packers to hinder the malicious code from reverse-engineered by malware analysts. A packer is a tool that compresses, encrypts, and modifies a malicious file’s format. Sometimes packers can be used for legitimate ends, for example, to protect a program against cracking or copying.
  • Creates RWX memory. There is a security trick with memory regions that allows an attacker to fill a buffer with a shellcode and then execute it. Filling a buffer with shellcode isn’t a big deal, it’s just data. The problem arises when the attacker is able to control the instruction pointer (EIP), usually by corrupting a function’s stack frame using a stack-based buffer overflow, and then changing the flow of execution by assigning this pointer to the address of the shellcode.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Ciphering the documents situated on the target’s disk drive — so the sufferer can no longer make use of the data;
  • Preventing routine accessibility to the target’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.

Troj/Formbook-A

The most normal networks whereby Troj/Formbook-A Ransomware are infused are:

  • By ways of phishing emails;
  • As an effect of customer ending up on a source that holds a harmful software program;

As soon as the Trojan is effectively infused, it will either cipher the information on the sufferer’s PC or stop the device from operating in an appropriate way – while likewise putting a ransom money note that points out the demand for the victims to effect the payment for the purpose of decrypting the papers or bring back the file system back to the preliminary problem. In the majority of circumstances, the ransom note will turn up when the client restarts the COMPUTER after the system has actually already been damaged.

Troj/Formbook-A circulation networks.

In various edges of the world, Troj/Formbook-A expands by leaps as well as bounds. Nevertheless, the ransom money notes as well as techniques of extorting the ransom money quantity may vary relying on certain local (local) setups. The ransom notes and techniques of obtaining the ransom money quantity may differ depending on particular regional (regional) settings.

Ransomware injection

For example:

    Faulty notifies regarding unlicensed software application.

    In specific areas, the Trojans usually wrongfully report having discovered some unlicensed applications enabled on the target’s gadget. The sharp after that demands the customer to pay the ransom.

    Faulty declarations about unlawful web content.

    In countries where software application piracy is less popular, this approach is not as reliable for the cyber scams. Conversely, the Troj/Formbook-A popup alert might wrongly claim to be originating from a law enforcement institution and will report having located kid pornography or other illegal data on the tool.

    Troj/Formbook-A popup alert may falsely declare to be obtaining from a legislation enforcement organization and will certainly report having located child pornography or other illegal data on the gadget. The alert will in a similar way contain a need for the individual to pay the ransom.

Technical details

File Info:

crc32: A5C6EEBE
md5: 91bcbab17e61cc1d2359eab4e6e8d83b
name: svch.exe
sha1: 95e2529f5dd7b4244e0fe36159e1bfbe14787363
sha256: 6c04a0eed76b9e8c2588a4a5523bfd2c19c4c3f1c71ba379a4cae3e019188451
sha512: ec83f0b423bd7a762274bc7484ebcf0117266d728fdde4484323f247978d0e19e86b6ae53dd20d8919ba1b151b98714dbd94b99ceac0efa15f9f5e616ae9a0f8
ssdeep: 3072:p5utptPs4hzT2VdIPLoiEEDZKdsyQwDkLMxHQlEVRM1o3qvuS47b8g:LQmZVaTowDZKOy7SCHQlEuvdkw
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Troj/Formbook-A also known as:

GridinSoft Trojan.Ransom.Gen
MicroWorld-eScan Gen:Variant.Razy.557850
CAT-QuickHeal Trojan.GenericPMF.S2589827
McAfee GenericRXCD-ZZ!91BCBAB17E61
Cylance Unsafe
Sangfor Malware
CrowdStrike win/malicious_confidence_100% (D)
BitDefender Gen:Variant.Razy.557850
K7GW Trojan ( 00536d121 )
K7AntiVirus Trojan ( 00536d121 )
Arcabit Trojan.Razy.D8831A
Invincea heuristic
F-Prot W32/Formbook.A.gen!Eldorado
Symantec Trojan.Formbook
ESET-NOD32 a variant of Win32/Formbook.AA
APEX Malicious
ClamAV Win.Malware.Formbook-7399661-0
Kaspersky HEUR:Trojan.Win32.Generic
NANO-Antivirus Virus.Win32.Gen.ccmw
Avast Win32:Evo-gen [Susp]
Tencent Win32.Trojan.Crypt.Htce
Ad-Aware Gen:Variant.Razy.557850
Emsisoft Gen:Variant.Razy.557850 (B)
Comodo TrojWare.Win32.Swotter.A@7i7pqi
F-Secure Trojan.TR/Crypt.ZPACK.Gen
DrWeb Trojan.PWS.Banker1.29984
TrendMicro Trojan.Win32.FormBook.SM
McAfee-GW-Edition BehavesLike.Win32.VirRansom.cc
Trapmine malicious.moderate.ml.score
FireEye Generic.mg.91bcbab17e61cc1d
Sophos Troj/Formbook-A
Ikarus Trojan-Spy.FormBook
Cyren W32/Formbook.A.gen!Eldorado
Webroot W32.Trojan.Gen
Avira TR/Crypt.ZPACK.Gen
Fortinet W32/GenKryptik.AYEB!tr
Endgame malicious (high confidence)
Microsoft TrojanSpy:Win32/Swotter.A!bit
SUPERAntiSpyware Trojan.Agent/Gen-Malagent
ZoneAlarm HEUR:Trojan.Win32.Generic
AhnLab-V3 Trojan/Win32.Formbook.C3424754
Acronis suspicious
BitDefenderTheta AI:Packer.1CFA7E501E
ALYac Gen:Variant.Razy.557850
MAX malware (ai score=85)
VBA32 BScope.TrojanPSW.Banker
TrendMicro-HouseCall Trojan.Win32.FormBook.SM
Rising Stealer.Fareit!8.170 (RDMK:cmRtazrIyKmn/383wyce53seMunm)
SentinelOne DFI – Malicious PE
eGambit Unsafe.AI_Score_65%
GData Gen:Variant.Razy.557850
AVG Win32:Evo-gen [Susp]
Cybereason malicious.17e61c
Qihoo-360 HEUR/QVM20.1.B199.Malware.Gen

How to remove Troj/Formbook-A ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
Reasons why I would recommend GridinSoft1

The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

Run the setup file.

When setup file has finished downloading, double-click on the install-antimalware-fix.exe file to install GridinSoft Anti-Malware on your system.

Run Setup.exe

An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.

GridinSoft Anti-Malware Setup

Press “Install” button.

GridinSoft Anti-Malware Install

Once installed, Anti-Malware will automatically run.

GridinSoft Anti-Malware Splash-Screen

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Troj/Formbook-A files and other malicious programs. This process can take a 20-30 minutes, so I suggest you periodically check on the status of the scan process.

GridinSoft Anti-Malware Scanning

Click on “Clean Now”.

When the scan has finished, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

GridinSoft Anti-Malware will scan and clean your PC for free in the trial period. The free version offer real-time protection for first 2 days. If you want to be fully protected at all times – I can recommended you to purchase a full version:

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If the guide doesn’t help you to remove Troj/Formbook-A you can always ask me in the comments for getting help.

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References

  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  2. More information about GridinSoft products: https://gridinsoft.com/comparison

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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