Trojan-Ransom.Win32.Cryptoff.bmb

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

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

In this article you will discover about the meaning of Trojan-Ransom.Win32.Cryptoff.bmb and also its unfavorable impact on your computer. Such ransomware are a form of malware that is clarified by on the internet scams to require paying the ransom money by a victim.

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Most of the situations, Trojan-Ransom.Win32.Cryptoff.bmb virus will certainly instruct its targets to launch funds move for the purpose of counteracting the changes that the Trojan infection has introduced to the target’s tool.

Trojan-Ransom.Win32.Cryptoff.bmb 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.
  • Possible date expiration check, exits too soon after checking local time;
  • A process created a hidden window;
  • Unconventionial language used in binary resources: Danish;
  • 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;
  • 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
  • Exhibits possible ransomware file modification behavior;
  • 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.
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the files found on the sufferer’s hard disk — so the sufferer can no longer utilize the data;
  • Preventing normal 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-Ransom.Win32.Cryptoff.bmb

The most regular channels where Trojan-Ransom.Win32.Cryptoff.bmb Ransomware are infused are:

  • By means of phishing emails;
  • As an effect of individual winding up on a source that holds a harmful software program;

As quickly as the Trojan is successfully injected, it will either cipher the data on the sufferer’s computer or protect against the gadget from operating in a correct manner – while additionally placing a ransom note that states the requirement for the victims to impact the settlement for the function of decrypting the files or bring back the file system back to the preliminary condition. In most instances, the ransom note will come up when the customer restarts the PC after the system has actually already been harmed.

Trojan-Ransom.Win32.Cryptoff.bmb distribution channels.

In different corners of the world, Trojan-Ransom.Win32.Cryptoff.bmb grows by jumps and also bounds. However, the ransom notes and tricks of obtaining the ransom amount may vary relying on particular local (local) setups. The ransom money notes and also methods of extorting the ransom quantity might differ depending on particular regional (local) settings.

Ransomware injection

As an example:

    Faulty informs about unlicensed software application.

    In specific locations, the Trojans commonly wrongfully report having actually found some unlicensed applications enabled on the target’s gadget. The sharp after that requires the customer to pay the ransom.

    Faulty statements about prohibited web content.

    In countries where software program piracy is much less preferred, this technique is not as efficient for the cyber scams. Alternatively, the Trojan-Ransom.Win32.Cryptoff.bmb popup alert may wrongly declare to be deriving from a law enforcement institution and also will report having situated youngster pornography or various other illegal data on the gadget.

    Trojan-Ransom.Win32.Cryptoff.bmb popup alert may wrongly declare to be obtaining from a regulation enforcement organization and will certainly report having located youngster porn or other unlawful data on the device. The alert will similarly include a demand for the individual to pay the ransom money.

Technical details

File Info:

crc32: 2333AF56
md5: 68f8abb8517635c0b165d4935f2f7abe
name: 68F8ABB8517635C0B165D4935F2F7ABE.mlw
sha1: 54523b99ecb1260d6eb80726b182d4f6d4955572
sha256: 8e99deffe97012a51e60aceeacc870abd273ec8e456928758c007a9df9fae6fa
sha512: fb4e1d2db799b790f3b40fdf966c20cf0174484eb25da92f6b7ee245ea8b91c766fd33f907920af513020c2d9946bd5b3684607907448026112a2b9896fb0b8d
ssdeep: 3072:prNCPqdnFlsko9MrYAMEvw+DWzD75MaeVSmh5ErnievKr8Swq76Gi0KsYa72nSJ:pRcMrCEvmJmh6iQKbYa7HVQDrNLzM
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright xa9. SurveyMonkey
CompanyName: SurveyMonkey
LegalTrademarks: Copyright xa9. SurveyMonkey
ProductName: BobssRoutines
ProductVersion: 7.5.4.520
FileDescription: Analytic Collate Updatable Wrote
Translation: 0x0406 0x04b0

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

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware2
K7AntiVirusTrojan ( 004f15bb1 )
Elasticmalicious (high confidence)
DrWebTrojan.Encoder.11536
CynetMalicious (score: 100)
ALYacTrojan.GenericKD.6100869
CylanceUnsafe
ZillyaTrojan.Cryptoff.Win32.542
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_90% (D)
AlibabaRansom:Win32/Cryptoff.79ad75fa
K7GWTrojan ( 004f15bb1 )
Cybereasonmalicious.851763
SymantecML.Attribute.HighConfidence
ESET-NOD32Win32/Filecoder.FP
APEXMalicious
AvastWin32:Malware-gen
KasperskyTrojan-Ransom.Win32.Cryptoff.bmb
BitDefenderTrojan.GenericKD.6100869
NANO-AntivirusTrojan.Win32.Cryptoff.etqzvp
MicroWorld-eScanTrojan.GenericKD.6100869
TencentWin32.Trojan.Cryptoff.Wskm
Ad-AwareTrojan.GenericKD.6100869
SophosMal/Generic-S
ComodoMalware@#b2rg66jsltr2
BitDefenderThetaGen:NN.ZexaF.34608.uG0@amBHJ2nG
VIPRETrojan.Win32.Generic!BT
TrendMicroMal_MiliCry-2t
McAfee-GW-EditionBehavesLike.Win32.Backdoor.fc
FireEyeGeneric.mg.68f8abb8517635c0
EmsisoftTrojan.GenericKD.6100869 (B)
AviraTR/Crypt.ZPACK.hocqc
eGambitUnsafe.AI_Score_96%
MicrosoftRansom:Win32/CryptoLemPiz.A
AegisLabTrojan.Win32.Cryptoff.4!c
GDataTrojan.GenericKD.6100869
AhnLab-V3Win-Trojan/Sagecrypt.Gen
McAfeeArtemis!68F8ABB85176
MAXmalware (ai score=99)
VBA32TrojanRansom.Cryptoff
MalwarebytesMachineLearning/Anomalous.100%
PandaTrj/CI.A
TrendMicro-HouseCallMal_MiliCry-2t
RisingTrojan.Generic@ML.100 (RDML:EjarlZeJasrk/Nx5BVSDcA)
YandexTrojan.Cryptoff!iHbUxxHllQg
SentinelOneStatic AI – Suspicious PE
FortinetW32/Filecoder.FP!tr
AVGWin32:Malware-gen
Paloaltogeneric.ml
Qihoo-360Win32/Ransom.Cryptoff.HgIASOkA

How to remove Trojan-Ransom.Win32.Cryptoff.bmb 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-Ransom.Win32.Cryptoff.bmb 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.bmb 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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