Managed XDR

vtdl_y5ual3cn — malware analysis report

File info

Filename
vtdl_y5ual3cn
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 10.0, Code page: 936, Author: Peter Cheng, Last Saved By: Deng Gao, Name of Creating Application: Microsoft Excel, Last Printed: Wed Jan 24 05:59:23 2024, Create Time/Date: Thu May 12 12:21:40 2022, Last Saved Time/Date: Wed Jan 24 06:44:17 2024, Security: 0
File size
581 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
c2ba4e251bb801b5fd05740cd8ed249d387edc52
SHA256
dfbc664ba69ed14dbf589c5403d559f8bfa667c35b2996eb8692e206a464f332
MD5
41dfae5342fbac2d8912473899d1cf80

Signatures

Execution

T1064 office_macros: The document contains macroses (total: 10)
T1064 office_macros_autoexec: The document contains an auto-start macro
T1204.002 office_vb_load: Microsoft Office is loading VB DLL files (macros usage indicator)

Privilege Escalation

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 office_macros_entropy: The document contains a macro with high entropy (a possible sign of obfuscation)
T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1497.002 async_mouse: Watches for mouse clicks using GetAsyncKeyState to detect human activity
T1064 office_macros: The document contains macroses (total: 10)
T1064 office_macros_autoexec: The document contains an auto-start macro
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process

Discovery

T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1497.002 async_mouse: Watches for mouse clicks using GetAsyncKeyState to detect human activity
T1082 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining

Other

yara_rules: Static rules
office_summary: The document contains suspicious metadata
create_rpc_bindings: Creates RPC connection
get_policy_info: Retrieves information about a Policy object
test_check_service: Starts services
antisandbox_check_graphics_card: Uses CreateDXGIFactory, potentially to detect graphics card