MSIL/Rozena.BB

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

What is MSIL/Rozena.BB infection?

In this post you will certainly locate concerning the meaning of MSIL/Rozena.BB as well as its adverse impact on your computer. Such ransomware are a kind of malware that is elaborated by online fraudulences to demand paying the ransom by a victim.

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In the majority of the situations, MSIL/Rozena.BB ransomware will advise its victims to initiate funds transfer for the purpose of neutralizing the changes that the Trojan infection has actually introduced to the victim’s tool.

MSIL/Rozena.BB Summary

These alterations can be as adheres to:

  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files situated on the target’s hard disk — so the sufferer can no more use the data;
  • Preventing regular accessibility to the sufferer’s workstation;

MSIL/Rozena.BB

The most typical networks whereby MSIL/Rozena.BB are injected are:

  • By ways of phishing emails;
  • As a consequence of individual ending up on a source that hosts a harmful software program;

As quickly as the Trojan is successfully injected, it will certainly either cipher the information on the sufferer’s PC or protect against the gadget from working in an appropriate way – while also putting a ransom note that discusses the requirement for the sufferers to impact the settlement for the objective of decrypting the files or restoring the file system back to the first problem. In the majority of circumstances, the ransom money note will come up when the customer restarts the COMPUTER after the system has actually currently been harmed.

MSIL/Rozena.BB circulation channels.

In numerous corners of the globe, MSIL/Rozena.BB expands by jumps as well as bounds. However, the ransom notes as well as methods of obtaining the ransom money amount may differ depending on particular neighborhood (regional) settings. The ransom notes as well as tricks of obtaining the ransom money quantity may vary depending on specific regional (local) setups.

Ransomware injection

For instance:

    Faulty notifies about unlicensed software program.

    In particular areas, the Trojans typically wrongfully report having actually identified some unlicensed applications made it possible for on the target’s tool. The alert then demands the individual to pay the ransom.

    Faulty declarations about prohibited web content.

    In nations where software program piracy is much less preferred, this technique is not as reliable for the cyber frauds. Conversely, the MSIL/Rozena.BB popup alert may wrongly claim to be deriving from a law enforcement establishment and also will report having located child pornography or various other illegal information on the tool.

    MSIL/Rozena.BB popup alert might falsely assert to be acquiring from a regulation enforcement organization as well as will certainly report having situated youngster pornography or various other prohibited information on the device. The alert will in a similar way include a need for the individual to pay the ransom money.

Technical details

File Info:

crc32: BB68FB8D
md5: 21bb12dbe51884d0099c6296efe85ab6
name: 21BB12DBE51884D0099C6296EFE85AB6.mlw
sha1: b92a8fb55e897cd966291a4cb5f30c50b2479900
sha256: eda524a4794e3e60863730c6321662d876db67857fd43d04da78602e5d085a98
sha512: 668526d7cfd2341a95899cb19097aa4fc8d7fc3d75324545971979c86b907dc86264a1f08363d34e43e0c2994a2b86b4a161a36ca21f706135cde5d9d7c59b70
ssdeep: 384:9jddzUEcCsBJryaa+FUh0U0FthPdvYZJdUgpGGU5thWRJtS:VzzrFfaTkJhrU5thWRJw
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright:
Assembly Version: 0.0.0.0
InternalName: shellcode32.exe
FileVersion: 0.0.0.0
ProductVersion: 0.0.0.0
FileDescription:
OriginalFilename: shellcode32.exe

MSIL/Rozena.BB also known as:

GridinSoftTrojan.Ransom.Gen
K7AntiVirusTrojan ( 00568b4e1 )
Elasticmalicious (high confidence)
CynetMalicious (score: 90)
ALYacGen:Variant.Bulz.188733
CylanceUnsafe
ZillyaTrojan.Rozena.Win32.110393
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_80% (W)
AlibabaVirTool:MSIL/Viemlod.bc895cc0
K7GWTrojan ( 00568b4e1 )
Cybereasonmalicious.be5188
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of MSIL/Rozena.BB
APEXMalicious
AvastWin32:TrojanX-gen [Trj]
KasperskyHEUR:Trojan.MSIL.Shelma.gen
BitDefenderGen:Variant.Bulz.188733
MicroWorld-eScanGen:Variant.Bulz.188733
TencentMsil.Trojan.Shelma.Hqlv
Ad-AwareGen:Variant.Bulz.188733
SophosML/PE-A
ComodoMalware@#3423nchjxk2uj
BitDefenderThetaGen:NN.ZemsilF.34608.bm0@aSGI1ho
VIPRETrojan.Win32.Generic!BT
TrendMicroTROJ_GEN.R002C0DLS20
McAfee-GW-EditionGenericRXMT-SI!21BB12DBE518
FireEyeGeneric.mg.21bb12dbe51884d0
EmsisoftGen:Variant.Bulz.188733 (B)
SentinelOneStatic AI – Malicious PE
AviraHEUR/AGEN.1129525
MicrosoftVirTool:MSIL/Viemlod.gen!A
GDataGen:Variant.Bulz.188733
AhnLab-V3Malware/Win32.RL_Generic.C4124468
McAfeeGenericRXMT-SI!21BB12DBE518
MAXmalware (ai score=83)
PandaTrj/GdSda.A
TrendMicro-HouseCallTROJ_GEN.R002C0DLS20
RisingTrojan.Rozena!8.6D (CLOUD)
IkarusTrojan.MSIL.Rozena
MaxSecureTrojan.Malware.73788019.susgen
FortinetMSIL/Rozena.P!tr
AVGWin32:TrojanX-gen [Trj]
Paloaltogeneric.ml
Qihoo-360Win32/Ransom.DogHousePower.HwMAPCcA

How to remove MSIL/Rozena.BB 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

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 MSIL/Rozena.BB 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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove MSIL/Rozena.BB 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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