Managed XDR

vtdl_ymtumh3e — malware analysis report

File info

Filename
vtdl_ymtumh3e
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 10.0, Code page: 1252, Author: Microsoft Corporation, Last Saved By: george, Name of Creating Application: Microsoft Excel, Last Printed: Thu Mar 11 10:47:40 2021, Create Time/Date: Mon Oct 21 11:03:58 1996, Last Saved Time/Date: Wed Feb 14 14:11:44 2024, Security: 1
File size
2.1 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
57960df10b0d4d836f56230b7dc0031982bb403c
SHA256
193f97b5b1fb4bdd84757dbf9660b8321a387e696a4110e6072d125efa7eb4d2
MD5
d117403fa34b4a877fcd240e27becc23

Signatures

Execution

T1064 office_macros_suspicious: Document contains suspicious macro
T1064 office_macros_strings: Feature lines found in document macro
T1064 office_macros: The document contains macroses (total: 45)
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

T1064 office_macros_suspicious: Document contains suspicious macro
T1096 persistence_ads: Creates Alternate Data Stream (ADS)
T1064 office_macros_strings: Feature lines found in document macro
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: 45)
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