Managed XDR

vtdl_gi1gc0hp (XWorm) — malware analysis report

File info

Filename
vtdl_gi1gc0hp
File type
Zip archive data, at least v2.0 to extract
File size
4.5 MB
First seen
Last seen

Environment

w10/x86 en

Hashes

SHA1
894a946345a1d418f562a7dc2b54e7152b5111e4
SHA256
ac6e9dba56f55ef45eb1019574f954df3db6bfd69a050b6dfd969f3f3fcaf201
MD5
207571a22d340e0df76d44b54b72668b

Malwares

  • XWorm

Signatures

Execution

T1053.005 persistence_autorun: Makes itself run automatically on Windows startup
T1059.001 suspicious_powershell: Creates suspicious powershell process
T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1059 powershell_cmd_longcommandline: Suspiciously long commandline
T1059.005 obfuscated_vbe: Detected obfuscated VBE script
T1047 has_wmi: Executes one or several WMI requests
T1059.003 suspicious_process: Spawns a suspicious process
T1059.003 executes_dropped_cmd: Executes dropped batch files
T1059.005 obfuscated_vbs: Detected obfuscated VBS

Persistence

T1053.005 persistence_autorun: Makes itself run automatically on Windows startup
T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1574 dropper_dll: Creates DLL, which is then loaded into the process

Privilege Escalation

T1053.005 persistence_autorun: Makes itself run automatically on Windows startup
T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1055 injection_thread: Code injection to a remote process using CreateRemoteThread or NtQueueApcThread
T1055.002 inject_write_pe: Writes PE file to another process's memory
T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1055 injection_runpe_2: Executes injected code in another process
T1055.012 injection_runpe: Injects code into another process
T1574 dropper_dll: Creates DLL, which is then loaded into the process
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

T1027.002 unnamed_memory_regions_contains_pe: One or several unnamed memory regions are PE files
T1055 injection_thread: Code injection to a remote process using CreateRemoteThread or NtQueueApcThread
T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055 injection_runpe_2: Executes injected code in another process
T1027 obfuscated_vbe: Detected obfuscated VBE script
T1055.012 injection_runpe: Injects code into another process
T1497.001 antivm_generic_bios: Checks the BIOS version, possibly for anti-virtualization
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1112 creates_largekey: Saves very large data in the registry, can be used to save the configuration or body of the malware
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1027 obfuscated_vbs: Detected obfuscated VBS
T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1497.001 antivm_queries_computername: Retrieves the computer name
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
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
T1070 stealth_window: A process created a hidden window

Credential Access

T1003.001 dumps_lsass: Dumps lsass.exe process (probably, to extract credentials)

Discovery

T1497.001 antivm_generic_bios: Checks the BIOS version, possibly for anti-virtualization
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1518.001 wmi_check_av: Uses WMI to check for installed antivirus software
T1057 pidbruteforce: Enumerates processes using PID Bruteforce
T1082 has_wmi: Executes one or several WMI requests
T1518 locates_browser: Attempts to identify where browsers are installed
T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1497.001 antivm_queries_computername: Retrieves the computer name
T1135 server_share_info: Retrieves information about each shared resource on a server
T1082 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining

Exfiltration

T1022 encrypts_pc_info: Collects and encrypts information about the computer (possibly for exfiltration)

Other

yara_rules: Static rules
suricata_alert: Malicious traffic detected
writes_pe_file_in_regkey: Writes PE file into regkey
executes_dropped_exe: Executes dropped exe files
critical_process: Makes the process critical to the system (the system shuts down when it's terminated)
creates_in_windows: Creates files in the Windows directory
creates_exe: Creates executable files in the file system
process_crashed: One of the processes has failed
no_graphical_activity: No graphic activity
create_rpc_bindings: Creates RPC connection
has_pdb: This executable file has a PDB path
creates_suspended_process: Creates suspended process
dotnet_import_unmanaged_code: Dotnet malware statically imports unmanaged functions/modules
break_limit_exceeded: Warning: function calls limit has been exceeded
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
pe_overlay: PE file contains overlay
dotnet_downloader_possible_network_problem: Dotnet downloader possibly has network problem

Related reports