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 6.1, Code page: 1252, Title: TreePlan 1.79 Decision Tree, Author: Mike Middleton, Comments: Creates and modifies decision tree diagrams with automatic formulas for endpoint values and for determining optimal strategy., Last Saved By: Mike Middleton, Name of Creating Application: Microsoft Macintosh Excel, Last Printed: Tue Aug 17 06:28:52 2010, Create Time/Date: Thu Feb 3 00:05:47 2005, Last Saved Time/Date: Fri Aug 5 21:12:17 2011, Security: 0
File size
369.5 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
62bc3accc05221c359cd4a5306c1f09e23b34818
SHA256
a72c3b303fbf26bbc75a79bd43a55dc76a145680deecf8a3fd5a1f7be1f4c7a3
MD5
61b80169f9abd94c5cab2bc18eca6d0f

Malwares

  • ZLoader

Signatures

Execution

T1064 office_macros_hidden: Document contains suspicious Excel 4.0 macro
T1064 office_macros: The document contains macroses (total: 8)
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_hidden: Document contains suspicious Excel 4.0 macro
T1064 office_macros: The document contains macroses (total: 8)
T1064 office_macros_autoexec: The document contains an auto-start macro
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

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
T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining

Other

yara_rules: Static rules
process_crashed: One of the processes has failed
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
checktokenmembership: Checks user token with CheckTokenMembership call

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