Managed XDR

k4.xls — malware analysis report

File info

Filename
k4.xls
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 10.0, Code page: 1252, Author: Administrator, Last Saved By: Bruno, Revision Number: 1, Name of Creating Application: Microsoft Excel, Create Time/Date: Tue Dec 17 01:32:42 1996, Last Saved Time/Date: Sat May 31 02:08:30 2025, Number of Pages: 0, Number of Words: 0, Number of Characters: 0, Security: 0
File size
102.5 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
b582cc37efa12d0b81411ee35665be6dbd093db2
SHA256
730c0a13271fdf719f6964f341a81b027ef924d8f38282b54ec639165b295f68
MD5
5db453a17d54acd32e480cfe31fb2702

Signatures

Execution

T1064 office_macros_hidden: Document contains suspicious Excel 4.0 macro
T1064 office_macros_suspicious: Document contains suspicious macro
T1204.002 office_vb_load: Microsoft Office is loading VB DLL files (macros usage indicator)
T1064 office_macros: The document contains macroses (total: 5)
T1064 office_macros_strings: Feature lines found in document 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
T1562.001 office_security: Attempts to modify Microsoft Office security settings
T1064 office_macros_suspicious: Document contains suspicious macro
T1497 evasion_trustrecords: Attempts to detect Sandbox exploring trusted documents
T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
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_strings: Feature lines found in document macro
T1064 office_macros_autoexec: The document contains an auto-start macro

Credential Access

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

Discovery

T1497 evasion_trustrecords: Attempts to detect Sandbox exploring trusted documents
T1497 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
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
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