Managed XDR

c-users-user-desktop-spreadsheet.xls — malware analysis report

File info

Filename
c-users-user-desktop-spreadsheet.xls
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 5.1, Code page: 1200, Locale ID: 2052, Revision Number: 1, Create Time/Date: Tue Dec 17 01:32:42 1996, Last Saved Time/Date: Thu Jul 7 05:27:55 2016, Number of Pages: 0, Number of Words: 0, Number of Characters: 0, Name of Creating Application: Microsof, Security: 0
File size
91 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
9f6d771475d3c8be1701921595d5eb6516ea06a5
SHA256
1a4db11fbf2647b26df8fc936d87b597b4230c7ada80084442b91e841322b337
MD5
3bc019b5fe9f45d561692c3c98361f8b

Signatures

Execution

T1203 office_exploit_creates_cmd: The document exhibits suspicious behaviour (creates a cmd.exe process)
T1064 office_macros_hidden: Document contains suspicious Excel 4.0 macro
T1064 office_macros_suspicious: Document contains suspicious macro
T1204.002 office_wmi_load: Microsoft Office loads WMI DLL files (WMI usage indicator in macros)
T1204.002 office_vb_load: Microsoft Office is loading VB DLL files (macros usage indicator)
T1106 susp_callbacks: Suspicious usage of some WinAPI with callbacks
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 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 macroses (total: 5)
T1064 office_macros_strings: Feature lines found in document macro
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
T1497.002 async_mouse: Watches for mouse clicks using GetAsyncKeyState to detect human activity
T1082 reads_csrss: Attempts to read csrss.exe memory
T1082 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining

Other

yara_rules: Static rules
creates_doc: Creates (office) documents in the file system
office_summary: The document contains suspicious metadata
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