Managed XDR
Group-IB MDP Report
Filename: wextract.exe-.mui
File Type: PE32 executable (GUI) Intel 80386, for MS Windows
File Size: 4.4 MB
SHA1: 1b83ed6359fa133c827456856276cf27ae78d795 SHA256: c403948116def40725e86011dc790a0d9b788cd8cdb62a03ef762f138b802fc3 MD5: 5d9836fc423f9c4f3ed37717f1ed8e64
Malwares: Amadey, Symmi, RedCurl
Signatures
Execution
T1059.001 suspicious_powershell: Creates suspicious powershell process
T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1053.005 persistence_autorun: Makes itself run automatically on Windows startup
T1059 autoit: AutoIt script execution detected
T1059.001 suspicious_process: Spawns a suspicious process
T1569.002 persistence_service: Starts newly created service
T1059.003 executes_dropped_cmd: Executes dropped batch files
T1059.001 url_cmdline: Cmdline of process contains URL
T1059.003 suspicious_batch: Suspicious batch
T1059.003 url_cmdline: Cmdline of process contains URL
T1047 has_wmi: Executes one or several WMI requests
Persistence
T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1053.005 persistence_autorun: Makes itself run automatically on Windows startup
T1543.003 creates_service: Creates a service, that will start automatically
T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1574 dropper_dll: Creates DLL, which is then loaded into the process
T1574.011 persistence_services: Modifies Services registry key
T1543.003 persistence_services: Modifies Services registry key
Privilege Escalation
T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1053.005 persistence_autorun: Makes itself run automatically on Windows startup
T1543.003 creates_service: Creates a service, that will start automatically
T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1574 dropper_dll: Creates DLL, which is then loaded into the process
T1574.011 persistence_services: Modifies Services registry key
T1543.003 persistence_services: Modifies Services registry key
T1134 sets_privilegies_via_adjusttokenprivileges: Sets process privilege via AdjustTokenPrivileges
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
T1562.001 disables_security: Disables Windows Security options
T1070 stealth_webhistory: Clears browsing history
T1562.001 stops_security_center: Stops Security Center
T1027.002 packer_themida: Themida packer signatures detected
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1574 dropper_dll: Creates DLL, which is then loaded into the process
T1574.011 persistence_services: Modifies Services registry key
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1070 stealth_window: A process created a hidden window
T1480 system_default_lang_id_present: Checks the system language
T1134 sets_privilegies_via_adjusttokenprivileges: Sets process privilege via AdjustTokenPrivileges
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1497.001 antivm_generic_video: Checks information about video adapters in registry, possibly for anti-virtualization
T1497.001 antivm_queries_computername: Retrieves the computer name
Credential Access
T1555.003 cookie_files: Accesses cookie files
T1552 cookie_files: Accesses cookie files
Discovery
T1518.001 antiav_detectfile: Attempts to detect installed antiviruses by a certain directory
T1518.001 antiav_detectservice: Attempts to detect installed antiviruses by a certain service
T1033 sam_users_discovery: Enumerates users or groups in system with SAM API
T1082 uses_windows_utilities: Uses Windows utilities for basic Windows functionality
T1057 process_interest: Enumerates processes
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1518 locates_browser: Attempts to identify where browsers are installed
T1082 reads_csrss: Attempts to read csrss.exe memory
T1082 has_wmi: Executes one or several WMI requests
T1087 has_wmi: Executes one or several WMI requests
T1087.001 local_account_discovery: Enumerates local accounts
T1057 has_wmi: Executes one or several WMI requests
T1049 list_ts_rdp_sessions: Lists ts/rdp sessions
T1497.001 antivm_generic_video: Checks information about video adapters in registry, possibly for anti-virtualization
T1497.001 antivm_queries_computername: Retrieves the computer name
Command and Control
T1071 network_irc: Connects to the IRC server, probably a botnet part
T1071.001 network_cnc_http: Suspicious HTTP traffic
T1071.001 network_http: Performs HTTP requests
T1071.001 wininet_openurl: Performs HTTP/HTTPS-requests using InternetOpenUrl
T1071.001 wininet_https: Performs HTTP/HTTPS requests using WinInet
Exfiltration
T1022 encrypts_pc_info: Collects and encrypts information about the computer (possibly for exfiltration)
Impact
T1489 stops_service: Stops Windows services
T1489 stops_security_center: Stops Security Center
T1489 net_stop: Stops services through the use of net stop
Other
yara_rules: Static rules
suricata_alert: Malicious traffic detected
redcurl_extractor: Specific to RedCurl.Extractor behaviour has been detected
creates_many_processes: Spawns a lot of processes (over 70)
dll_mapping_exception: Failed mapping of dll with exception
creates_exe: Creates executable files in the file system
executes_dropped_exe: Executes dropped exe files
creates_in_windows: Creates files in the Windows directory
create_process_failed: Could not start the process
codepage: Checks the system code page
process_crashed: One of the processes has failed
unexpected_exception: Unexpected exception
network_ftp: Performs FTP requests
create_rpc_bindings: Creates RPC connection
has_pdb: This executable file has a PDB path
creates_suspended_process: Creates suspended process
checks_install_language: Checks Windows installation language
message_box: Displays a message
get_policy_info: Retrieves information about a Policy object
creates_in_programdata: Creates files in the ProgramData directory
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
writes_data: Writes big amount of data to disk
Managed XDR