Trojan.Extenbro

The Extenbro Trojan is a piece of malware that cyber crooks use to breach the security layers of Web browsers and may affect Google Chrome as early as version 37. The Extenbro Trojan is deployed on low-quality software distribution platforms and suspicious alternatives to the Chrome Web Store. The Extenbro malware may corrupt the update DLL library of your browser and direct you to download a fake update package. The Extenbro Trojan may lead users to install a corrupted version of Google Chrome that is being monitored and controlled by con artists. The Extenbro malware may allow third parties to hijack your social media log-ins and record online banking credentials. Users affected by Extenbro might lose control of their online accounts and lose money.

Moreover, the fake updates facilitated by the Extenbro Trojan may contain other threats like CryptoWall, Cidex, and Mybios. The Extenbro malware is considered a severe threat to your data and online identity and should not be underestimated. The Extenbro malware may write a Registry entry in the Windows Registry to enable its automatic start when you turn on your PC. Extenbro also may place its main executable in the Temp folder under the Windows directory to evade security scans. The detection of the Extenbro Trojan may suggest that another threat is on your PC, and you may wish to use a reliable anti-malware suite to clean your OS.

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SpyHunter Detects & Remove Trojan.Extenbro

Analysis Report

General information

Family Name:	Trojan.Extenbro
Signature status:	No Signature

Known Samples

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Known Samples

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

MD5: ae81ff663d84b9ff1b2b6ef6f5458c21 SHA1: 840ec032feb36614efe1c9e4ca25717e35c01b30 SHA256: D4DB81EF0C5544894376799E8FE8A94448632BE25B1E12EA68FC15669D7F7554 File Size: 1.18 MB, 1175592 bytes

MD5: beded712bc7e510b12f02da1d5f45550 SHA1: b2bbdc2f0a1dc67a337de0ef1da845d207185f3c SHA256: D89D2349EE8D4F3D638901ED354A5F37428C131FB39435E5E8316BFD0DA2C118 File Size: 636.23 KB, 636227 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 debug information
• File doesn't have exports table
• File doesn't have relocations information
• File doesn't have security information
• File has TLS information
• 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)

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• 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
Comments	This installation was built with Inno Setup.
Company Name	B9QCZeiCftrZeIYXKZg7
File Description	B9QCZeiCftrZeIYXKZg7 Setup/Uninstall
File Version	51.1052.0.0 5.2.2
Product Name	B9QCZeiCftrZeIYXKZg7
Product Version	5.2.2

Digital Signatures

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Digital Signatures

This section lists digital signatures that are attached to samples within this family. When analyzing and verifying digital signatures, it is important to confirm that the signature’s root authority is a well-known and trustworthy entity and that the status of the signature is good. Malware is often signed with non-trustworthy “Self Signed” digital signatures (which can be easily created by a malware author with no verification). Malware may also be signed by legitimate signatures that have an invalid status, and by signatures from questionable root authorities with fake or misleading “Signer” names.

Signer	Root	Status
Tishin Alexander	COMODO Code Signing CA 2	Self Signed

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.

Similar Families

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Similar Families

This section lists other families that share similarities with this family, based on EnigmaSoft’s analysis. Many malware families are created from the same malware toolkits and use the same packing and encryption techniques but uniquely extend functionality. Similar families may also share source code, attributes, icons, subcomponents, compromised and/or invalid digital signatures, and network characteristics. Researchers leverage these similarities to rapidly and effectively triage file samples and extend malware detection rules.

• Dropper.Delf.CD

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
c:\users\user\appdata\local\temp\is-a0ddn.tmp\b2bbdc2f0a1dc67a337de0ef1da845d207185f3c_0000636227.tmp	Generic Write,Read Attributes
c:\users\user\appdata\local\temp\is-tiuqn.tmp\_isetup\_setup64.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
HKCU\software\microsoft\windows\currentversion\explorer::slowcontextmenuentries		RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc3475	㵡 ȁ 獖}	RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75		RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75		RegNtPreCreateKey
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75		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
Process Shell Execute	CreateProcess ShellExecuteEx

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\Zvygvnmy\AppData\Local\Temp\is-A0DDN.tmp\b2bbdc2f0a1dc67a337de0ef1da845d207185f3c_0000636227.tmp" /SL5="$40388,246387,121344,c:\users\user\downloads\b2bbdc2f0a1dc67a337de0ef1da845d207185f3c_0000636227"

(NULL) c:\users\user\downloads\b2bbdc2f0a1dc67a337de0ef1da845d207185f3c_0000636227 /VERYSILENT