Managed XDR

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

File info

Filename
c-users-user-desktop-spreadsheet.xls
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 6.2, Code page: 936, Last Saved By: Administrator, Name of Creating Application: Microsoft Excel, Last Printed: Sat May 4 01:52:59 2013, Create Time/Date: Thu Dec 29 01:26:26 2011, Last Saved Time/Date: Thu Oct 30 22:49:47 2025, Security: 0
File size
99.5 KB
First seen
Last seen

Environment

w10/x86 en

Hashes

SHA1
88a91dee45f52048c84f02096580d0402a6f8e4a
SHA256
ff3d3bd641acc9ec77a17a38756f414db2628039dccd3bcbde1eb9f560f6862c
MD5
b6ca6a3d2204ace1349b8406473f04e7

Malwares

  • ZLoader

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)
T1204.002 office_com_load: Microsoft Office loads COM DLL files (indicator of COM usage in macros)
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

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
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
T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager

Discovery

T1497 evasion_trustrecords: Attempts to detect Sandbox exploring trusted documents
T1083 checks_recent_files: Attempt to check recently opened files through registry

Other

yara_rules: Static rules
creates_doc: Creates (office) documents in the file system
office_summary: The document contains suspicious metadata
creates_suspended_process: Creates suspended process
test_check_service: Starts services
writes_data: Writes big amount of data to disk

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