Trojan:Win32/Foosace.C!rfn

What is Trojan:Win32/Foosace.C!rfn infection?

In this article you will locate concerning the interpretation of Trojan:Win32/Foosace.C!rfn and its negative impact on your computer system. Such ransomware are a kind of malware that is elaborated by on-line frauds to require paying the ransom money by a sufferer.

In the majority of the cases, Trojan:Win32/Foosace.C!rfn infection will certainly instruct its victims to initiate funds move for the function of counteracting the amendments that the Trojan infection has actually introduced to the victim’s gadget.

Trojan:Win32/Foosace.C!rfn Summary

These modifications can be as follows:

  • 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.
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • Mimics the file times of a Windows system file;
  • Installs itself for autorun at Windows startup. There is simple tactic using the Windows startup folder located at:
    C:\Users\[user-name]\AppData\Roaming\Microsoft\Windows\StartMenu\Programs\Startup. Shortcut links (.lnk extension) placed in this folder will cause Windows to launch the application each time [user-name] logs into Windows.

    The registry run keys perform the same action, and can be located in different locations:

    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records located on the victim’s hard drive — so the sufferer can no longer utilize the data;
  • Preventing routine access 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.

Trojan:Win32/Foosace.C!rfn

The most typical networks where Trojan:Win32/Foosace.C!rfn Ransomware are infused are:

  • By means of phishing emails;
  • As a consequence of user ending up on a source that organizes a harmful software program;

As quickly as the Trojan is efficiently infused, it will certainly either cipher the information on the victim’s PC or protect against the gadget from working in a correct way – while likewise placing a ransom note that discusses the need for the sufferers to impact the repayment for the purpose of decrypting the files or bring back the documents system back to the first condition. In the majority of instances, the ransom money note will come up when the client restarts the PC after the system has already been damaged.

Trojan:Win32/Foosace.C!rfn circulation channels.

In various edges of the world, Trojan:Win32/Foosace.C!rfn expands by leaps as well as bounds. However, the ransom notes and also methods of obtaining the ransom quantity might vary relying on particular regional (regional) settings. The ransom notes and also tricks of extorting the ransom money amount might vary depending on specific local (regional) setups.

Ransomware injection

For instance:

    Faulty alerts regarding unlicensed software program.

    In particular locations, the Trojans usually wrongfully report having discovered some unlicensed applications enabled on the victim’s device. The alert after that demands the customer to pay the ransom money.

    Faulty statements about prohibited content.

    In nations where software piracy is much less prominent, this approach is not as reliable for the cyber fraudulences. Additionally, the Trojan:Win32/Foosace.C!rfn popup alert might falsely claim to be originating from a law enforcement establishment and will certainly report having located kid porn or other prohibited information on the gadget.

    Trojan:Win32/Foosace.C!rfn popup alert might incorrectly declare to be obtaining from a regulation enforcement establishment and will report having located child porn or other prohibited data on the gadget. The alert will in a similar way contain a need for the user to pay the ransom.

Technical details

File Info:

crc32: B42305A3md5: bcf7b88f26047932a32ead602f3e7c10name: BCF7B88F26047932A32EAD602F3E7C10.mlwsha1: dbfcd5f0080ef42f7c0de65a627507f57b812759sha256: 9145df9f436ff91fb3deef84d602ce12c4c9a6903df704c5920b5b5e44090dc2sha512: f67704136fc28fde5ba55d443c44946c3862f945d0c5485dac1404138272c0c354a5886a1aedfd2a3f07353e604cd820338f12500c1314583f1cec6922ceff58ssdeep: 768:aTYmwuTmKZAu10tissxgnfD+tdn6HS+nADkhzGinNhPGs1RVgUStu3Gy7l4:aTYmwuTLAxsmoDIADkhJTG+RVGu3NZtype: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Foosace.C!rfn also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 0048e8611 )
Elastic malicious (high confidence)
DrWeb Trojan.PWS.Wsgame.38320
Cynet Malicious (score: 100)
CAT-QuickHeal Trojan.Mauvaise.SL1
ALYac Gen:Variant.Graftor.519027
Cylance Unsafe
Zillya Trojan.OnLineGames.Win32.152590
Sangfor Suspicious.Win32.Symmi.8470
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Blocker.0c0d3134
K7GW Trojan ( 0048e8611 )
Cybereason malicious.f26047
Cyren W32/Trojan.IBQV-1671
Symantec Infostealer.Sofacy
ESET-NOD32 a variant of Win32/Sednit.C
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan-Ransom.Win32.Blocker.lejc
BitDefender Gen:Variant.Graftor.519027
NANO-Antivirus Trojan.Win32.Wsgame.fgvqsi
MicroWorld-eScan Gen:Variant.Graftor.519027
Tencent Malware.Win32.Gencirc.114d381a
Ad-Aware Gen:Variant.Graftor.519027
Sophos Mal/Generic-R + Troj/Sednit-U
Comodo Malware@#3dhj7t8o4ei38
BitDefenderTheta Gen:NN.ZexaF.34678.dmZ@ayeWjSf
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Almanahe.qc
FireEye Generic.mg.bcf7b88f26047932
Emsisoft Gen:Variant.Graftor.519027 (B)
Jiangmin Trojan/Blocker.bkk
Avira TR/Dropper.Gen
eGambit Trojan.Generic
Microsoft Trojan:Win32/Foosace.C!rfn
Arcabit Trojan.Graftor.D7EB73
AegisLab Trojan.Win32.Blocker.j!c
ZoneAlarm Trojan-Ransom.Win32.Blocker.lejc
GData Gen:Variant.Graftor.519027
AhnLab-V3 Trojan/Win32.PcClient.R237841
McAfee PWS-FAGN!BCF7B88F2604
MAX malware (ai score=99)
VBA32 TrojanRansom.Blocker
Malwarebytes Trojan.ServStart
Panda Trj/CI.A
Rising Dropper.Generic!8.35E (CLOUD)
Ikarus Trojan.Win32.FakeSysdef
Fortinet W32/Blocker.LEJC!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Blocker.HgAASSEA

How to remove Trojan:Win32/Foosace.C!rfn 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

Run the setup file.

Run Setup.exe
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 Scanning

Click on “Clean Now”.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

Full version of GridinSoft

If the guide doesn’t help you to remove Trojan:Win32/Foosace.C!rfn you can always ask me in the comments for getting help.

References

    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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