Written by Robert Bailey

What is TrojanDownloader:Win32/Silcon!rfn infection?

In this article you will find regarding the meaning of TrojanDownloader:Win32/Silcon!rfn and its negative impact on your computer system. Such ransomware are a form of malware that is specified by on the internet scams to demand paying the ransom by a victim.

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Most of the situations, TrojanDownloader:Win32/Silcon!rfn ransomware will instruct its sufferers to initiate funds move for the function of reducing the effects of the modifications that the Trojan infection has presented to the target’s tool.

TrojanDownloader:Win32/Silcon!rfn Summary

These modifications can be as complies with:

  • 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.
  • Possible date expiration check, exits too soon after checking local time;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents located on the target’s hard disk — so the victim can no more make use of the information;
  • Preventing normal 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.


One of the most regular channels where TrojanDownloader:Win32/Silcon!rfn Trojans are injected are:

  • By ways of phishing e-mails;
  • As a consequence of customer ending up on a resource that organizes a harmful software application;

As soon as the Trojan is successfully infused, it will certainly either cipher the information on the victim’s computer or prevent the gadget from functioning in an appropriate way – while additionally placing a ransom money note that discusses the requirement for the sufferers to impact the repayment for the objective of decrypting the files or recovering the file system back to the initial problem. In many instances, the ransom note will certainly come up when the customer restarts the COMPUTER after the system has actually already been damaged.

TrojanDownloader:Win32/Silcon!rfn distribution channels.

In various edges of the globe, TrojanDownloader:Win32/Silcon!rfn grows by jumps and bounds. However, the ransom notes as well as tricks of obtaining the ransom money amount may vary depending upon specific neighborhood (local) settings. The ransom notes and also tricks of extorting the ransom money quantity might differ depending on particular regional (local) setups.

Ransomware injection

For instance:

    Faulty informs concerning unlicensed software program.

    In specific locations, the Trojans often wrongfully report having detected some unlicensed applications allowed on the target’s tool. The sharp then requires the individual to pay the ransom.

    Faulty declarations about illegal material.

    In countries where software program piracy is much less preferred, this approach is not as effective for the cyber fraudulences. Conversely, the TrojanDownloader:Win32/Silcon!rfn popup alert might incorrectly claim to be originating from a police establishment as well as will report having situated child porn or various other prohibited data on the gadget.

    TrojanDownloader:Win32/Silcon!rfn popup alert may incorrectly declare to be acquiring from a regulation enforcement organization and will report having located child pornography or various other unlawful data on the gadget. The alert will likewise include a requirement for the user to pay the ransom.

Technical details

File Info:

crc32: AE06A5A8
md5: 0893934ebfef889dfb7dd5e49f2bca30
name: 0893934EBFEF889DFB7DD5E49F2BCA30.mlw
sha1: b5fdf39a16e910d3e7b7a0badc71cb5779f2015a
sha256: dcd8f7f6505c0aa87c894e13beb4ec2d3d8702e8d579e803b08bfeba92e689d0
sha512: 45e4f1036fa0ab715a97512e22f17143f8fe8b3f738ecde01c1c202fb3e8e6fd5d5c60f90ab090b8291fc57d4b02ac204c76195c4fe794f29682c4d7139d6c9a
ssdeep: 6144:Wr/iReCQ29pLVDfKMxf3kePyF8h887e0ZdZNF0jLcN4xI5PNc+4pge0sDAwDb1:WraeQ3LVDfPPk0hLj5R4xO6R03w9
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

TrojanDownloader:Win32/Silcon!rfn also known as:

GridinSoft Trojan.Ransom.Gen
Elastic malicious (high confidence)
McAfee Packed-PB.c!0893934EBFEF
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
AegisLab Trojan.Win32.Cryptoff.j!c
Sangfor Malware
K7AntiVirus Trojan ( 00512c141 )
K7GW Trojan ( 00512c141 )
Cybereason malicious.ebfef8
Cyren W32/Nymaim.BC.gen!Eldorado
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:Malware-gen
Cynet Malicious (score: 100)
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Trojan.Agent.CKLL
NANO-Antivirus Trojan.Win32.Cryptoff.erojmu
MicroWorld-eScan Trojan.Agent.CKLL
Rising Ransom.Cryptoff!8.E62C (TFE:2:k4CqLK7ahhM)
Ad-Aware Trojan.Agent.CKLL
Emsisoft Trojan.Agent.CKLL (B)
Comodo TrojWare.Win32.Nitol.FR@77bpz7
F-Secure Heuristic.HEUR/AGEN.1106831
DrWeb Trojan.DownLoader25.15560
Zillya Downloader.Nymaim.Win32.2273
Sophos Mal/Generic-S
Ikarus Trojan.Inject
Jiangmin Trojan.Cryptoff.ak
Avira HEUR/AGEN.1106831
MAX malware (ai score=100)
Antiy-AVL Trojan/Win32.TSGeneric
Microsoft TrojanDownloader:Win32/Silcon!rfn
Arcabit Trojan.Agent.CKLL
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Trojan.Agent.CKLL
AhnLab-V3 Malware/Win32.Generic.C2078533
Acronis suspicious
BitDefenderTheta Gen:NN.ZexaF.34804.WqW@a8@@3am
ALYac Trojan.Agent.CKLL
TACHYON Ransom/W32.Cryptoff.787456
VBA32 Hoax.Cryptoff
Malwarebytes Malware.AI.67790807
Panda Trj/Genetic.gen
ESET-NOD32 Win32/TrojanDownloader.Nymaim.BA
TrendMicro-HouseCall TROJ_NYMAIM.SMR2
Tencent Malware.Win32.Gencirc.10b17e67
Yandex Trojan.GenAsa!f/y3s5fc3gg
SentinelOne Static AI – Malicious PE – Downloader
Fortinet W32/Nymaim.BA!tr
AVG Win32:Malware-gen
CrowdStrike win/malicious_confidence_100% (D)
Qihoo-360 Win32/Trojan.Cryptoff.N

How to remove TrojanDownloader:Win32/Silcon!rfn virus?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
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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 setup-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.

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Press “Install” button.

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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 TrojanDownloader:Win32/Silcon!rfn 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 TrojanDownloader:Win32/Silcon!rfn you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site:
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About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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