Trojan:Win32/CommandAndControl!rfn

What is Trojan:Win32/CommandAndControl!rfn infection?

In this short article you will find regarding the meaning of Trojan:Win32/CommandAndControl!rfn as well as its adverse influence on your computer. Such ransomware are a kind of malware that is clarified by on-line scams to require paying the ransom money by a victim.

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In the majority of the cases, Trojan:Win32/CommandAndControl!rfn ransomware will instruct its sufferers to launch funds transfer for the function of neutralizing the amendments that the Trojan infection has introduced to the victim’s gadget.

Trojan:Win32/CommandAndControl!rfn Summary

These modifications can be as follows:

  • 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.
  • 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.

  • 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 files found on the target’s disk drive — so the sufferer can no longer make use of the data;
  • Preventing routine access to the victim’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/CommandAndControl!rfn

The most normal channels whereby Trojan:Win32/CommandAndControl!rfn Ransomware Trojans are infused are:

  • By means of phishing emails;
  • As an effect of individual winding up on a resource that organizes a destructive software program;

As quickly as the Trojan is successfully injected, it will either cipher the data on the target’s PC or avoid the gadget from working in a correct manner – while additionally positioning a ransom money note that discusses the requirement for the victims to impact the repayment for the objective of decrypting the files or recovering the file system back to the preliminary problem. In the majority of circumstances, the ransom note will turn up when the customer restarts the COMPUTER after the system has already been damaged.

Trojan:Win32/CommandAndControl!rfn circulation networks.

In different corners of the globe, Trojan:Win32/CommandAndControl!rfn expands by jumps as well as bounds. Nonetheless, the ransom money notes and also techniques of extorting the ransom money amount may vary depending upon certain local (regional) setups. The ransom money notes and also methods of extorting the ransom amount may differ depending on specific regional (local) settings.

Ransomware injection

For example:

    Faulty alerts about unlicensed software application.

    In certain locations, the Trojans commonly wrongfully report having identified some unlicensed applications allowed on the sufferer’s gadget. The sharp then requires the customer to pay the ransom money.

    Faulty declarations concerning illegal web content.

    In nations where software application piracy is much less popular, this technique is not as effective for the cyber scams. Additionally, the Trojan:Win32/CommandAndControl!rfn popup alert might incorrectly assert to be originating from a law enforcement organization and also will report having situated youngster porn or various other illegal data on the device.

    Trojan:Win32/CommandAndControl!rfn popup alert may incorrectly declare to be deriving from a regulation enforcement establishment and also will report having located kid pornography or other prohibited information on the device. The alert will in a similar way contain a demand for the customer to pay the ransom money.

Technical details

File Info:

crc32: 5CAE7059
md5: ac7d2136d6f58ae1611cb226057f14bf
name: AC7D2136D6F58AE1611CB226057F14BF.mlw
sha1: 972ab6ac6f6ed2c82fa40d12476ed56e2a5730ed
sha256: e7554ebf14186d6f4abc6be07d9903c75e079cd5d72fc5a55e28c3662bf66a67
sha512: 07778ffa782f16e28d7fb837493d16a9311525031814aee753aa313cc770a03fdd75f8d9a5e8817dacc5491fddcfe28b014461953048ed9544a171dc18025fb3
ssdeep: 6144:0/JQdPL9rWtBhuXgeJpnT3Ye77MqEA0gkLbdV0z2gtnIOiZTGlEdQzs:JBW0XgeJpzYe7IqSgOj+ztnIOsTGl9A
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/CommandAndControl!rfn also known as:

GridinSoft Trojan.Ransom.Gen
Bkav HW32.Packed.
K7AntiVirus Trojan ( 0052c8a31 )
MicroWorld-eScan Gen:Variant.Symmi.49283
CAT-QuickHeal Trojan.Dynamer
ALYac Gen:Variant.Symmi.49283
Cylance Unsafe
Zillya Tool.Loader.Win32.123
Sangfor Malware
CrowdStrike win/malicious_confidence_100% (W)
Alibaba HackTool:Win32/Loader.f612bdc2
K7GW Trojan ( 0052c8a31 )
Cybereason malicious.6d6f58
TrendMicro TROJ_GEN.R002C0PKF19
Cyren W32/Trojan.DFUX-2487
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/HackTool.Loader.L potentially unsafe
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Trojan.Zegost-7495607-0
GData Gen:Variant.Symmi.49283
BitDefender Gen:Variant.Symmi.49283
NANO-Antivirus Virus.Win32.Gen-Crypt.ccnc
Tencent Win32.Trojan.Crypt.Lort
Ad-Aware Gen:Variant.Symmi.49283
Sophos Mal/ResDro-B
Comodo Malware@#2it6wq56vg45l
F-Secure Packed:W32/PeCan.A
BitDefenderTheta AI:Packer.7446D1291E
VIPRE Trojan-Dropper.Win32.Resdro.b (v) (not malicious)
Invincea heuristic
McAfee-GW-Edition BehavesLike.Win32.Generic.dc
Trapmine malicious.high.ml.score
FireEye Generic.mg.ac7d2136d6f58ae1
Emsisoft Gen:Variant.Symmi.49283 (B)
SentinelOne DFI – Malicious PE
Endgame malicious (high confidence)
Webroot W32.Malware.Gen
Avira TR/Crypt.XPACK.Gen
eGambit Unsafe.AI_Score_92%
Antiy-AVL Trojan/Win32.SGeneric
Microsoft Trojan:Win32/CommandAndControl!rfn
Arcabit Trojan.Symmi.DC083
AegisLab Trojan.Win32.Symmi.4!c
AhnLab-V3 Malware/RL.Generic.R242676
Acronis suspicious
McAfee BackDoor-EXZ
MAX malware (ai score=84)
VBA32 Trojan.Click
Panda Trj/CI.A
TrendMicro-HouseCall TROJ_GEN.R002C0PKF19
Rising Trojan.Dynamer!8.3A0 (C64:YzY0Oh3DbiY5ynlq)
Yandex Riskware.HackTool!438wlXcqofU
MaxSecure Trojan.Malware.4604222.susgen
Fortinet W32/Filecoder.FV!tr.ransom
AVG Win32:Malware-gen
Paloalto generic.ml

How to remove Trojan:Win32/CommandAndControl!rfn ransomware?

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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There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft2.

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.

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 Trojan:Win32/CommandAndControl!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 Trojan:Win32/CommandAndControl!rfn 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/products/

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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