Managed XDR

vtdl_nivyo7lu — malware analysis report

File info

Filename
vtdl_nivyo7lu
File type
Microsoft Word 2007+
File size
31.7 MB
First seen
Last seen

Environment

win7/x64 en

Hashes

SHA1
506a69bfd99600fc3fc6f49b9fce8b444edd3eb4
SHA256
25da801b8fbab92f6c6cae45668de79ab8b8c2c269abae8cf8b51b97a4ddfb38
MD5
21f1bd7a971063da6ad723ef0bb47fb2

Signatures

Initial Access

T1192 html_urls: HTML-document downloads a file

Execution

T1059.003 suspicious_process: Spawns a suspicious process

Persistence

T1574.011 persistence_services: Modifies Services registry key
T1543.003 persistence_services: Modifies Services registry key

Privilege Escalation

T1574.011 persistence_services: Modifies Services registry key
T1543.003 persistence_services: Modifies Services registry key
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

T1218.003 cmstp: Uses cmstp.exe utility (possibly, to bypass UAC)
T1553.004 registers_root_cert: Registers a new root certificate
T1574.011 persistence_services: Modifies Services registry key
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.001 antivm_disk_size: Checks the amount of free disk space
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 checks_firmware: Attempts to read firmware information (potentially for evasion)
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.002 async_mouse: Watches for mouse clicks using GetAsyncKeyState to detect human activity

Discovery

T1497.001 antivm_disk_size: Checks the amount of free disk space
T1083 checks_recent_files: Attempt to check recently opened files through registry
T1497 checks_firmware: Attempts to read firmware information (potentially for evasion)
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.002 async_mouse: Watches for mouse clicks using GetAsyncKeyState to detect human activity
T1135 server_share_info: Retrieves information about each shared resource on a server
T1082 checks_firmware: Attempts to read firmware information (potentially for evasion)

Other

office_embedded: Office document contains embedded executable file(s)
static_pe_anomaly: The PE file structure contains anomalies
creates_in_windows: Creates files in the Windows directory
modifies_certs: Attempts to generate or modify system certificates
creates_rasphone: Creates new connection (rasphone)
creates_exe: Creates executable files in the file system
create_rpc_bindings: Creates RPC connection
require_administrator: Requests administrator privileges
has_pdb: This executable file has a PDB path
message_box: Displays a message
get_policy_info: Retrieves information about a Policy object
test_check_service: Starts services
office_links: Office file contains external links
antisandbox_check_graphics_card: Uses CreateDXGIFactory, potentially to detect graphics card
yara_rules: Static rules