Managed XDR

password_here.txt.lnk (Tinba) — malware analysis report

File info

Filename
password_here.txt.lnk
File type
MS Windows shortcut, Item id list present, Has Description string, Has Relative path, Has Working directory, Has command line arguments, Icon number=97, Normal, ctime=Mon Jan 1 00:00:00 1601, mtime=Mon Jan 1 00:00:00 1601, atime=Mon Jan 1 00:00:00 1601, length=435712, window=hidenormalshowminimized
File size
1.1 KB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
fa9bbc2280a09b1d7b4551311f6f2d717ef15bc5
SHA256
e74a096ef64253fb2ead9c023ddc288ca4ce61f4b8c0b2bb09c6daeaa1898b55
MD5
43c791b552e2177967c01bb1037f067f

Malwares

  • Tinba

Signatures

Execution

T1059.001 suspicious_powershell: Creates suspicious powershell process
T1569.002 persistence_service: Starts newly created service
T1059.001 suspicious_process: Spawns a suspicious process
T1059.001 url_cmdline: Cmdline of process contains URL
T1059.003 suspicious_process: Spawns a suspicious process
T1059.003 executes_dropped_cmd: Executes dropped batch files
T1059.003 url_cmdline: Cmdline of process contains URL
T1059.005 obfuscated_vbs: Detected obfuscated VBS
T1059.006 drops_python_dll: Drops python dll
T1047 has_wmi: Executes one or several WMI requests

Persistence

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1543.003 creates_service: Creates a service, that will start automatically
T1574 dropper_dll: Creates DLL, which is then loaded into the process

Privilege Escalation

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another process
T1543.003 creates_service: Creates a service, that will start automatically
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
T1574 dropper_dll: Creates DLL, which is then loaded into the process

Defense Evasion

T1218 suspicious_cmdline: Executes a suspicious command
T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another process
T1027.002 unnamed_memory_regions_contains_pe: One or several unnamed memory regions are PE files
T1497.001 antivm_firmware: Attempts to detect VM by firmware
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1562 dep_disable: Disables DEP
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1497.003 antisandbox_sleep_utilities: Uses Windows utilities for pausing the execution
T1497.001 antivm_network_adapters: Checks NIC addresses
T1027 obfuscated_vbs: Detected obfuscated VBS
T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1497 checks_firmware: Attempts to read firmware information (potentially for evasion)
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1497.001 antivm_queries_computername: Retrieves the computer name
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
T1574 dropper_dll: Creates DLL, which is then loaded into the process
T1562.001 windows_defender_add_exclusion: Adds a path to Microsoft Defender exclusion list

Discovery

T1497.001 antivm_firmware: Attempts to detect VM by firmware
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1497.003 antisandbox_sleep_utilities: Uses Windows utilities for pausing the execution
T1082 uses_windows_utilities: Uses Windows utilities for basic Windows functionality
T1057 pidbruteforce: Enumerates processes using PID Bruteforce
T1057 process_interest: Enumerates processes
T1497.001 antivm_network_adapters: Checks NIC addresses
T1518 locates_browser: Attempts to identify where browsers are installed
T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1497 checks_firmware: Attempts to read firmware information (potentially for evasion)
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1497.001 antivm_queries_computername: Retrieves the computer name
T1082 reads_csrss: Attempts to read csrss.exe memory
T1082 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1082 checks_firmware: Attempts to read firmware information (potentially for evasion)
T1016 get_hostname: Attempts to get hostname
T1135 server_share_info: Retrieves information about each shared resource on a server

Command and Control

T1071.001 network_http: Performs HTTP requests
T1105 cmdline_curl: Uses curl utility for network data transferring

Impact

T1489 net_stop: Stops services through the use of net stop
T1489 service_control_stop: Stops services via ControlService

Other

yara_rules: Static rules
networkdyndns_checkip: Connects to a Dynamic DNS domain
creates_exe: Creates executable files in the file system
creates_in_windows: Creates files in the Windows directory
changes_power_settings: Changes power settings (disables hibernation or sleeping mode)
network_anomaly: Network anomalies occured during the analysis
executes_dropped_exe: Executes dropped exe files
network_powershell: Powershell process network connection detected
unsigned_driver_drop: Sample is not signed and drops a device driver
driver_load: Loads a driver
create_rpc_bindings: Creates RPC connection
creates_suspended_process: Creates suspended process
break_limit_exceeded: Warning: function calls limit has been exceeded
creates_in_programdata: Creates files in the ProgramData directory
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
suricata_alert: Malicious traffic detected

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