Херметична чистачка

HermeticWiper е изключително разрушителна заплаха за злонамерен софтуер, предназначена да направи нарушените компютри неработоспособниконкретно. Заплахата беше насочена срещу множество организации в Украйна и вероятно е свързана с руската инвазия в страната. Според заключенията на няколко доставчици на киберсигурност, стотици машини, принадлежащи на организации от различни сектори на индустрията - финансови, авиационни, отбранителни и ИТ услуги, вече са компрометирани. Общият брой на засегнатите компютри вероятно е много по-голям.

Функционалност и подробности за атаките

HermeticWiper е в състояние да повреди главния запис за зареждане (MBR) на компютри с Windows, който е важен компонент, отговорен за правилното зареждане на операционната система. Като го изтрие, зловредният софтуер блокира цялата система и спира да може да бъде стартирана. Според охранителната фирма SentinelOne, техниката, използвана от заплахата, включва използване на легитимните драйвери на безплатното приложение EaseUs Partition Master и води до повреждане на твърдите дискове на системата. Що се отнася до самата заплаха, тя изглежда е подписана с цифров сертификат, принадлежащ на компания на име „Hermetica Digital Ltd.“ намира се в Кипър.

Атаката на HermeticeWiper изглежда е планирана доста предварително, като киберпрестъпниците компрометират някои от насочените системи месеци по-рано. В някои системи нападателите също разположиха заплахи за откуп заедно с HermeticWiper, но този ход най-вероятно е опит за отклоняване да маскират истинските им намерения.

Доклад за анализ

Главна информация

Family Name:	Trojan.HermeticWiper
Signature status:	Hash Mismatch

Known Samples

i

Known Samples

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

MD5: 382fc1a3c5225fceb672eea13f572a38 SHA1: d9a3596af0463797df4ff25b7999184946e3bfa2 SHA256: 2C10B2EC0B995B88C27D141D6F7B14D6B8177C52818687E4FF8E6ECF53ADF5BF Размер на файла: 117.00 KB, 117000 bytes

Windows Portable Executable Attributes

i

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

i

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.

Digital Signatures

i

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
Hermetica Digital Ltd	DigiCert EV Code Signing CA (SHA2)	Hash Mismatch

Block Information

i

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:	55
Potentially Malicious Blocks:	45
Whitelisted Blocks:	10
Unknown Blocks:	0

Visual Map

1 1 1 0 x 0 x x x x x 0 x x x x x x x x x x 0 x x x x x x x x x x x x x x 0 x x 0 0 x x x x x x x x x x x x x

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

Similar Families

i

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.

• HermeticWiper.A

Files Modified

i

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:	Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\windows\system32\drivers\hzdr	Generic Read,Write Data,Write Attributes,Write extended,Append data
c:\windows\system32\drivers\hzdr	Generic Write,Read Attributes
c:\windows\system32\drivers\hzdr.sys	Generic Read,Write Data,Write Attributes,Write extended,Append data

Registry Modifications

i

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	Данни	API Name
HKLM\system\controlset001\control\crashcontrol::crashdumpenabled		RegNtPreCreateKey

Windows API Usage

i

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
Other Suspicious	AdjustTokenPrivileges
Service Control	OpenSCManager OpenService