Managed XDR

trix.xls (ZLoader) — malware analysis report

File info

Filename
trix.xls
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 10.0, Code page: 1252, Last Saved By: Chi Chung, Last Saved Time/Date: Fri Feb 10 02:06:45 2023, Security: 0
File size
394.5 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
13f645a06280ded8f74c036e770e4d6c7ddca85d
SHA256
42e33ccec4599cea77846c625c7426dbc5e29df579c5f56e8b32bea72b19a6eb
MD5
b1b585a746a898fa796b5a8c4defd18f

Malwares

  • ZLoader

Signatures

Execution

T1064 office_macros_hidden: Document contains suspicious Excel 4.0 macro
T1204.002 office_vb_load: Microsoft Office is loading VB DLL files (macros usage indicator)
T1064 office_macros: The document contains macro
T1064 office_macros_autoexec: The document contains an auto-start macro

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_hidden: Document contains suspicious Excel 4.0 macro
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
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 macro
T1064 office_macros_autoexec: The document contains an auto-start macro

Discovery

T1082 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
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

Other

yara_rules: Static rules
office_summary: The document contains suspicious metadata
office_suspicious_data: Office file contains suspicious data
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
antisandbox_check_graphics_card: Uses CreateDXGIFactory, potentially to detect graphics card
checktokenmembership: Checks user token with CheckTokenMembership call

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