Managed XDR

vtdl_t4bzr_p4 — malware analysis report

File info

Filename
vtdl_t4bzr_p4
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 6.1, Code page: -535, Subject: bacnam.com.vn, Author: Tn Nhng V, Keywords: bacnam.com.vn, Last Saved By: AutoBVT, Name of Creating Application: Microsoft Excel, Last Printed: Sat Feb 3 08:06:15 2024, Create Time/Date: Thu Nov 22 00:41:41 2012, Last Saved Time/Date: Sat Feb 3 08:07:21 2024, Security: 0
File size
3.1 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
65fa38d98c09178444f070503bd72a6d9b6a12ff
SHA256
2bd3c3f16eb85d02b4abdf7bc2c7bb4fa97b6312f2c432e2f58adfc69faa2042
MD5
c0ea0b38a1715f8bfbcc269efa8b4b8a

Signatures

Execution

T1064 office_macros: The document contains macroses (total: 5)
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

T1096 persistence_ads: Creates Alternate Data Stream (ADS)
T1564 office_vba_stomping: VBA Stomping was detected in the document (the VBA source code and P-code are different)
T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1027 office_macros_entropy: The document contains a macro with high entropy (a possible sign of obfuscation)
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1064 office_macros: The document contains macroses (total: 5)
T1064 office_macros_autoexec: The document contains an auto-start macro

Discovery

T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1082 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1083 checks_recent_files: Attempt to check recently opened files through registry

Other

yara_rules: Static rules
office_summary: The document contains suspicious metadata
creates_suspended_process: Creates suspended process
break_limit_exceeded: Warning: function calls limit has been exceeded
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
checktokenmembership: Checks user token with CheckTokenMembership call