Managed XDR

attachment.xls — malware analysis report

File info

Filename
attachment.xls
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 6.1, Code page: 936, Author: jygs, Revision Number: 1, Name of Creating Application: Microsoft Excel, Last Printed: Wed Dec 2 07:59:04 2020, Create Time/Date: Tue Dec 17 01:32:42 1996, Last Saved Time/Date: Wed Dec 2 07:59:49 2020, Number of Pages: 0, Number of Words: 0, Number of Characters: 0, Security: 0
File size
110 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
4b8f5cd9ef2c4f1b46fc866ae2316466e5f2f43d
SHA256
3d51a2a506f88e898808dc7340ff4fd502d443305f3917bc76c1715d6247203f
MD5
cacd78d92cd0722bbf957692d84a8037

Signatures

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

T1564 office_vba_stomping: VBA Stomping was detected in the document (the VBA source code and P-code are different)
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

Credential Access

T1555.003 cookie_files: Accesses cookie files
T1552 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
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
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