Managed XDR

wextract.exe-.mui (Lorenz) — отчёт о динамическом анализе вредоносного файла

Информация о файле

Имя файла
wextract.exe-.mui
Тип файла
PE32+ executable (GUI) x86-64, for MS Windows
Размер файла
525 KB
Первое обнаружение
Последнее обнаружение

Окружение

win7/x64 en

Хеши

SHA1
94a2c3d9d0c3d889e8a0408ec46e02962009786a
SHA256
cec55a656085c71ce83d4fd6d562ea0f7a66a6240d8dfde8436fccc32435491d
MD5
89fe0118ce82fac1a6b4b30c30744b63

Вредоносное ПО

  • Lorenz

Сигнатуры

Execution

T1053.005 persistence_autorun: Makes itself run automatically on Windows startup
T1047 has_wmi: Executes one or several WMI requests

Persistence

T1053.005 persistence_autorun: Makes itself run automatically on Windows startup

Privilege Escalation

T1053.005 persistence_autorun: Makes itself run automatically on Windows startup
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process

Defense Evasion

T1218 wmic_create_process: Creates a process using wmic.exe utility
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497 evasion_diskenum: Sandbox evasion using enumeration of partitions
T1497.001 antivm_queries_computername: Retrieves the computer name
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1070 stealth_window: A process created a hidden window

Credential Access

T1555.003 cookie_files: Accesses cookie files
T1552 cookie_files: Accesses cookie files

Discovery

T1497.001 antivm_disk_size: Checks the amount of free disk space
T1057 has_wmi: Executes one or several WMI requests
T1497 evasion_diskenum: Sandbox evasion using enumeration of partitions
T1497.001 antivm_queries_computername: Retrieves the computer name

Impact

T1486 ransomware_extensions: Ransomware(s) Lorenz indicators detected (specific extension is added to files)
T1486 mass_data_encryption: Encrypts data using the same key (possible ransomware behaviour)

Other

yara_rules: Static rules
ce_info: Lorenz Configuration Data found
lorenz: Detected Lorenz ransomware
creates_exe: Creates executable files in the file system
creates_in_windows: Creates files in the Windows directory
dead_host: Connects to IP addresses that do not respond to requests
suspicious_process: Spawns a suspicious process
executes_dropped_exe: Executes dropped exe files
no_graphical_activity: No graphic activity
has_pdb: This executable file has a PDB path
break_limit_exceeded: Warning: function calls limit has been exceeded
get_policy_info: Retrieves information about a Policy object
writes_data: Writes big amount of data to disk

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