Managed XDR

vtdl_ei020_2b — malware analysis report

File info

Filename
vtdl_ei020_2b
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 6.2, Code page: 1252, Name of Creating Application: Microsoft Excel, Create Time/Date: Sat Sep 16 00:00:00 2006, Last Saved Time/Date: Mon Dec 11 16:50:18 2023, Security: 1
File size
581 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
63ec353b59bb3892eac9d23415e1d21db27d3927
SHA256
db465c7db95a7c693874eab472eb8d66201a635512e190c8ffbdfe8ada60d6d0
MD5
e57293220e65de7ba6895f369cf8e824

Signatures

Execution

T1203 exploit_CVE_2017_11882: Exploits CVE-2017-11882 vulnerability
T1059.001 suspicious_powershell: Suspicious document behaviour (creates powershell process)
T1203 office_exploit_http: The document exhibits suspicious behaviour (performs HTTP requests)
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
T1064 office_macros: The document contains macro
T1204.002 office_vb_load: Microsoft Office is loading VB DLL files (macros usage indicator)

Privilege Escalation

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

T1064 office_macros: The document contains macro
T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.002 async_mouse: Watches for mouse clicks using GetAsyncKeyState to detect human activity
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

Credential Access

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

Discovery

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 antivm_queries_computername: Retrieves the computer name
T1497.002 async_mouse: Watches for mouse clicks using GetAsyncKeyState to detect human activity
T1083 checks_recent_files: Attempt to check recently opened files through registry
T1082 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1135 server_share_info: Retrieves information about each shared resource on a server

Command and Control

T1071.001 office_exploit_http: The document exhibits suspicious behaviour (performs HTTP requests)
T1071.004 office_exploit_dns: The document exhibits suspicious behaviour (performs DNS requests)
T1071.001 network_http: Performs HTTP requests
T1071.001 winhttp_https: Performs HTTP/HTTPS requests using WinHttp
T1071.001 wininet_https: Performs HTTP/HTTPS requests using WinInet

Other

yara_rules: Static rules
creates_exe: Creates executable files in the file system
suricata_alert: Malicious traffic detected
suspicious_process_network: Unusual process network activity detected
creates_doc: Creates (office) documents in the file system
unexpected_exception: Unexpected exception
office_summary: The document contains suspicious metadata
create_rpc_bindings: Creates RPC connection
break_limit_exceeded: Warning: function calls limit has been exceeded
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
checktokenmembership: Checks user token with CheckTokenMembership call