Trojan.Urelas.LB

The detection of Trojan.Urelas.LB on your system indicates a potential security threat that requires immediate attention. This type of malware is designed to compromise the security and integrity of your computer, allowing unauthorized access and potentially leading to further malicious activities. It is essential to understand the nature of this threat and take prompt action to remove it and prevent future infections.

What Is Trojan.Urelas.LB?

Trojan.Urelas.LB is a type of Trojan malware, which is a broad category of malicious software that disguises itself as legitimate programs. The name "Trojan" comes from the Trojan Horse legend, where a seemingly harmless gift conceals a dangerous threat. In the context of computer security, Trojans are used to describe malware that tricks users into installing it, often by masquerading as a useful application or software update. Once installed, Trojans can cause a wide range of problems, from data theft and system crashes to the installation of additional malware.

How Trojan.Urelas.LB Operates

While the specific details of how Trojan.Urelas.LB operates are not available, Trojans in general typically work by exploiting vulnerabilities in software or human psychology. They may use social engineering tactics to trick users into installing them, such as posing as a legitimate program or attachment in an email. Once installed, Trojans can communicate with their creators, allowing them to remotely control the infected computer, steal sensitive information, or use the computer as a botnet to distribute spam or malware. Trojans can also install additional malware, such as keyloggers, ransomware, or spyware, to further compromise the security of the infected system.

Symptoms of Infection

The symptoms of a Trojan.Urelas.LB infection can vary, but common indicators include unusual system behavior, such as slow performance, frequent crashes, or unexpected pop-ups. You may also notice that your browser homepage has changed, or that you are being redirected to unwanted websites. In some cases, Trojans can also cause problems with your internet connection, such as slow speeds or frequent disconnections. If you suspect that your system is infected with Trojan.Urelas.LB, it is crucial to take immediate action to remove the malware and prevent further damage.

How to Remove Trojan.Urelas.LB

1. Boot your computer in Safe Mode with Networking to prevent the malware from loading and to allow you to download and install removal tools.
2. Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system and detect any malware that may be present.
3. Uninstall any suspicious programs or applications that you do not recognize or that were installed around the time of the infection.
4. Reset your web browsers, such as Chrome, Firefox, or Edge, to their default settings to remove any malicious extensions or add-ons.
5. Reboot your computer and perform another scan with your anti-malware tool to ensure that the malware has been completely removed.

Conclusion

Removing Trojan.Urelas.LB from your system requires a combination of technical knowledge and caution. By following the steps outlined above and using reputable anti-malware tools, you can help to ensure that your system is clean and secure. However, prevention is always the best approach, and taking steps to protect your system from future infections, such as keeping your software up to date, using strong passwords, and being cautious when installing new programs or opening attachments, is essential to maintaining the security and integrity of your computer.

Analysis Report

General information

Family Name:	Trojan.Urelas.LB
Signature status:	Modified signature

Known Samples

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Known Samples

This section lists other file samples believed to be associated with this family.

MD5: 8325d7ad9f68d0ab046f997640e036e0 SHA1: a414f49a42676700b4cf88cddefdb45279228877 SHA256: A40C788DD22E5C530DBFF7D9B40D97C6B8558C2F831575F847EA3D796C54571F File Size: 697.38 KB, 697376 bytes

Windows Portable Executable Attributes

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Windows Portable Executable Attributes

This section lists file attributes found within family samples. These attributes are extracted from the files’ Windows PE (Portable Executable) specification and various system flags. Portable Executable Attributes give malware researchers insight into a file’s functionality, executable details, platform and runtime environment.

• File doesn't have "Rich" header
• File doesn't have exports table
• File is 32-bit executable
• File is either console or GUI application
• File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
• File is Native application (NOT .NET application)
• File is not packed
• IMAGE_FILE_DLL is not set inside PE header (Executable)
• IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Icons

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File Icons

This section displays icon resources found within family samples. Malware often replicates icons commonly associated with legitimate software to mislead users into believing the malware is safe.

Windows PE Version Information

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Windows PE Version Information

This section displays values and attributes that have been set in the Windows file version information data structure for samples within this family. To mislead users, malware actors often add fake version information mimicking legitimate software.

Name	Value
Company Name	Bkav Corporation
File Description	Chim Lac Update Setup
File Version	1.3.27.17
Internal Name	Chim Lac Update Setup
Language Id	en
Legal Copyright	Copyright 2013 Bkav Corporation
Original Filename	ChimLacUpdateSetup.exe
Product Name	Chim Lac Update
Product Version	1.3.27.17

File Traits

• HighEntropy
• Installer Version
• x86

Block Information

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Block Information

During analysis, EnigmaSoft breaks file samples into logical blocks for classification and comparison with other samples. Blocks can be used to generate malware detection rules and to group file samples into families based on shared source code, functionality and other distinguishing attributes and characteristics. This section lists a summary of this block data, as well as its classification by EnigmaSoft. A visual representation of the block data is also displayed, where available.

Total Blocks:	283
Potentially Malicious Blocks:	4
Whitelisted Blocks:	279
Unknown Blocks:	0

Visual Map

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 x 0 0 x 0 x x 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 3 0 0 0 0 0 0 1 0 0 1 0 0 0 1 0 0 1 0 0 0 2 2 0 0 1 0 0 0 1 1 1 0 1 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 2 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 1 1 1 0 0 0 0 1 0 0 0 0 2 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 0 0 2 0 2 0 0 2 0 0 0 0 1 0 0 0 0 0 1 1 0 1 0 0

0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Files Modified

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Files Modified

This section lists files that were created, modified, moved and/or deleted by samples in this family. File system activity can provide valuable insight into how malware functions on the operating system.

File	Attributes
\device\namedpipe\wkssvc	Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_update.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_am.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_ar.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_bg.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_bn.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_ca.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_cs.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_da.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_de.dll	Generic Write,Read Attributes

Show More

c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_el.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_en-gb.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_en.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_es-419.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_es.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_et.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_fa.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_fi.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_fil.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_fr.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_gu.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_hi.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_hr.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_hu.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_id.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_is.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_it.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_iw.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_ja.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_kn.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_ko.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_lt.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_lv.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_ml.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_mr.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_ms.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_nl.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_no.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_pl.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_pt-br.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_pt-pt.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_ro.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_ru.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_sk.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_sl.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_sr.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_sv.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_sw.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_ta.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_te.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_th.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_tr.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_uk.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_ur.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_vi.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_zh-cn.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlac_updateres_zh-tw.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlaccrashhandler.exe	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlacupdate.exe	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlacupdatebroker.exe	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlacupdatehelper.msi	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\chimlacupdateondemand.exe	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\npchimlacupdate3.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\psmachine.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gum5dd0.tmp\psuser.dll	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\gut5dd1.tmp	Generic Read,Write Data,Write Attributes,Write extended,Append data

Registry Modifications

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Registry Modifications

This section lists registry keys and values that were created, modified and/or deleted by samples in this family. Windows Registry activity can provide valuable insight into malware functionality. Additionally, malware often creates registry values to allow itself to automatically start and indefinitely persist after an initial infection has compromised the system.

Key::Value	Data	API Name
HKLM\software\microsoft\systemcertificates\authroot\certificates\e12dfb4b41d7d9c32b30514bac1d81d8385e2d46::blob	 �ZX�͒d{�S�����$� *Sectigo (UTN Object) "0 +  +  �7 + b o�x�� �Yw�Y�Z�j=�T ��`xu� ��dt�<�ݙ��[(M�<�� ����Y���,�g~ c��&�	RegNtPreCreateKey
HKLM\software\microsoft\systemcertificates\authroot\certificates\4eb6d578499b1ccf5f581ead56be3d9b6744a5e5::blob	 ់㇤㹧ৢ䗾鍗૳ᳺ ứ霞輫穆轙⊩㢅즔S c愰ℰଆ虠ňŅᜇ〆〒ؐ⬊ĆĄ㞂ļ́ダ؟怉䢆蘁泽ĂሰူਆثЁ舁㰷āȃ쀀ᬰԆ腧Č〃〒ؐ⬊ĆĄ㞂ļ́翀Ā⨀　ب⬈Ćԅ̇؂⬈Ćԅ̇؃⬈Ćԅ̇؄⬈Ćԅ̇ँĀ⨀　ب⬈Ćԅ̇؂⬈Ćԅ	RegNtPreCreateKey
HKLM\software\microsoft\systemcertificates\authroot\certificates\4eb6d578499b1ccf5f581ead56be3d9b6744a5e5::blob	\  ص�6�hbu�B�Ҫ�7 N��xI��_X�V�=�gD��h ~ �/-��  ����\L�A��T�a VeriSign �e�����0 �C9��313b �ϫ~C�؀�k&*����e������d��� *0(	RegNtPreCreateKey
HKLM\software\microsoft\systemcertificates\authroot\certificates\e12dfb4b41d7d9c32b30514bac1d81d8385e2d46::blob	 �C�;R�)�Hɱ�( �-�KA���+0QK���8^-Fh @� �5� ~ c��&�  ����Y���,�g ��dt�<�ݙ��[(M�<��b o�x�� �Yw�Y�Z�j=�T ��`xu� "0 +  +  �7 + 	RegNtPreCreateKey
HKLM\software\microsoft\systemcertificates\authroot\certificates\e12dfb4b41d7d9c32b30514bac1d81d8385e2d46::blob	 ���AP0k�㴜�� �ZX�͒d{�S�����$� *Sectigo (UTN Object) "0 +  +  �7 + b o�x�� �Yw�Y�Z�j=�T ��`xu� ��dt�<�ݙ��[(M�<�� ����Y�	RegNtPreCreateKey
HKLM\software\microsoft\systemcertificates\authroot\certificates\e12dfb4b41d7d9c32b30514bac1d81d8385e2d46::blob	\  �C�;R�)�Hɱ�( �-�KA���+0QK���8^-Fh @� �5� ~ c��&�  ����Y���,�g ��dt�<�ݙ��[(M�<��b o�x�� �Yw�Y�Z�j=�T ��`xu� "0 +  +  �7 	RegNtPreCreateKey
HKCU\software\bkav corporation\update\clientstate\{c21db7bf-3628-4ce1-9f47-f9791edd51fd}::usagestats		RegNtPreCreateKey
HKCU\software\bkav corporation\update::uid	{398657BF-9281-43AF-A051-570E0DDF81B7}	RegNtPreCreateKey
HKCU\software\bkav corporation\update\usagestats\daily::lasttransmission	�h	RegNtPreCreateKey

Windows API Usage

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Windows API Usage

This section lists Windows API calls that are used by the samples in this family. Windows API usage analysis is a valuable tool that can help identify malicious activity, such as keylogging, security privilege escalation, data encryption, data exfiltration, interference with antivirus software, and network request manipulation.

Category	API
Process Manipulation Evasion	NtUnmapViewOfSection ReadProcessMemory
Process Shell Execute	CreateProcess
Encryption Used	BCryptOpenAlgorithmProvider
Cert Store Read	CertEnumCertificatesInStore
Anti Debug	IsDebuggerPresent OutputDebugString
User Data Access	GetComputerNameEx GetUserObjectInformation
Other Suspicious	AdjustTokenPrivileges

Shell Command Execution

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Shell Command Execution

This section lists Windows shell commands that are run by the samples in this family. Windows Shell commands are often leveraged by malware for nefarious purposes and can be used to elevate security privileges, download and launch other malware, exploit vulnerabilities, collect and exfiltrate data, and hide malicious activity.

C:\Users\Bolylydw\AppData\Local\Temp\GUM5DD0.tmp\ChimLacUpdate.exe /installsource taggedmi /install "appguid={C21DB7BF-3628-4CE1-9F47-F9791EDD51FD}&needsadmin=False&lang=vi&usagestats=1&channel=stable"

"C:\Users\Bolylydw\AppData\Local\Bkav Corporation\Update\ChimLacUpdate.exe" /unregserver