Trojan-Ransom.Win32.Cryptoff.bhv

Written by Robert Bailey

What is Trojan-Ransom.Win32.Cryptoff.bhv infection?

In this article you will certainly find concerning the definition of Trojan-Ransom.Win32.Cryptoff.bhv and also its adverse influence on your computer. Such ransomware are a type of malware that is specified by on the internet scams to require paying the ransom by a sufferer.

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In the majority of the instances, Trojan-Ransom.Win32.Cryptoff.bhv virus will instruct its sufferers to launch funds transfer for the objective of neutralizing the changes that the Trojan infection has introduced to the sufferer’s tool.

Trojan-Ransom.Win32.Cryptoff.bhv 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;
  • A process created a hidden window;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses Windows utilities for basic functionality;
  • Attempts to delete volume shadow copies;
  • Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
  • Modifies boot configuration settings;
  • 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
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the records situated on the sufferer’s hard disk drive — so the sufferer can no longer use the information;
  • Preventing regular accessibility to the sufferer’s workstation;

Trojan-Ransom.Win32.Cryptoff.bhv

One of the most typical channels whereby Trojan-Ransom.Win32.Cryptoff.bhv are injected are:

  • By ways of phishing emails;
  • As a repercussion of user ending up on a source that hosts a destructive software;

As soon as the Trojan is successfully infused, it will certainly either cipher the data on the victim’s PC or stop the gadget from operating in a correct fashion – while additionally positioning a ransom note that points out the requirement for the sufferers to effect the settlement for the purpose of decrypting the records or restoring the file system back to the initial condition. In the majority of instances, the ransom money note will come up when the customer restarts the PC after the system has actually currently been harmed.

Trojan-Ransom.Win32.Cryptoff.bhv circulation networks.

In different corners of the globe, Trojan-Ransom.Win32.Cryptoff.bhv grows by leaps and also bounds. Nevertheless, the ransom notes and also tricks of extorting the ransom money quantity might vary depending on certain local (local) setups. The ransom money notes and tricks of obtaining the ransom money quantity may vary depending on certain regional (regional) settings.

Ransomware injection

For instance:

    Faulty alerts regarding unlicensed software application.

    In particular locations, the Trojans often wrongfully report having detected some unlicensed applications made it possible for on the sufferer’s device. The alert after that demands the customer to pay the ransom.

    Faulty statements regarding illegal content.

    In countries where software application piracy is much less prominent, this method is not as efficient for the cyber frauds. Conversely, the Trojan-Ransom.Win32.Cryptoff.bhv popup alert might falsely declare to be originating from a police organization and will report having situated kid pornography or various other prohibited information on the device.

    Trojan-Ransom.Win32.Cryptoff.bhv popup alert may wrongly assert to be acquiring from a law enforcement organization and also will certainly report having located child porn or various other illegal data on the tool. The alert will in a similar way consist of a demand for the user to pay the ransom money.

Technical details

File Info:

crc32: 13FA0711
md5: e19225b233cdc334f51006cc950fb027
name: E19225B233CDC334F51006CC950FB027.mlw
sha1: 5cadc441102e11f7d80a0ec0d18d83486642a4f5
sha256: dd3926329c7defb75e7e2710d1381c1eacf441ebe98cdf1b9276c524f1045613
sha512: ec9925f408023bcf6856a87ca79ccf53be1a87af124139cc8886acfbb6a16f1f067a12fcc3280d55b113187f36a5761ea8ca0020085cae58a3781853a97a4fff
ssdeep: 3072:evEcr2UxbAfC53095uvVBntg+H6He2ylbAIwEtDbhlxpi5Q+eoiPovDoMgQ:e8cK+1h5VByVqlbPwcfTbiC+QPxML
type: PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows

Version Info:

LegalCopyright: xa9 2016 All rights reserved. CACE Technologies, Inc.
InternalName: LkingNotepad
FileVersion: 7.4.30.52
CompanyName: CACE Technologies, Inc.
ProductName: LkingNotepad
ProductVersion: 7.4.30.52
FileDescription: Partly Wbas Cod Conner Converted
OriginalFilename: LkingNotepad.exe
Translation: 0x0409 0x04b0

Trojan-Ransom.Win32.Cryptoff.bhv also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 004f15bb1 )
Elastic malicious (high confidence)
DrWeb Trojan.MulDrop7.35498
Cynet Malicious (score: 90)
CAT-QuickHeal Trojanransom.Cryptoff
ALYac Trojan.GenericKD.45669663
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Cryptoff.b36319e4
K7GW Trojan ( 004f15bb1 )
Cybereason malicious.233cdc
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/Filecoder.FP
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan-Ransom.Win32.Cryptoff.bhv
BitDefender Trojan.GenericKD.45669663
NANO-Antivirus Trojan.Win32.Filecoder.etapdv
MicroWorld-eScan Trojan.GenericKD.45669663
Ad-Aware Trojan.GenericKD.45669663
Sophos Mal/Generic-S
Comodo Malware@#33arp6w5cefml
BitDefenderTheta Gen:NN.ZexaF.34628.pq0@aqZ3thbi
VIPRE Trojan.Win32.Generic!BT
TrendMicro Mal_HPGen-37b
McAfee-GW-Edition BehavesLike.Win32.Emotet.dh
FireEye Generic.mg.e19225b233cdc334
Emsisoft Trojan.GenericKD.45669663 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.Cryptoff.gb
Avira TR/Crypt.ZPACK.jqewo
eGambit Unsafe.AI_Score_98%
Kingsoft Win32.Troj.Generic_a.a.(kcloud)
Microsoft Ransom:Win32/CryptoLemPiz.A
Arcabit Trojan.Generic.D2B8DD1F
AegisLab Trojan.Win32.Generic.4!c
GData Trojan.GenericKD.45669663
TACHYON Ransom/W32.Cryptoff.245760
AhnLab-V3 Trojan/Win32.Cryptoff.C2339063
Acronis suspicious
McAfee Artemis!E19225B233CD
MAX malware (ai score=99)
VBA32 Trojan-Ransom.Cryptoff
Malwarebytes MachineLearning/Anomalous.100%
Panda Trj/CI.A
TrendMicro-HouseCall Mal_HPGen-37b
Rising Trojan.Generic@ML.86 (RDMK:GA5UUWtwBtFWXGvppDhn4w)
Ikarus Trojan.Win32.Filecoder
Fortinet W32/Filecoder.FP!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Cryptoff.HgIASOUA

How to remove Trojan-Ransom.Win32.Cryptoff.bhv virus?

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

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-Ransom.Win32.Cryptoff.bhv 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-Ransom.Win32.Cryptoff.bhv 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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