Managed XDR

k4.xls (ZLoader) — malware analysis report

File info

Filename
k4.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
11b90b9f7ff7154a6d203d096a6b3bd50db0822c
SHA256
812d73e8f0ff53de9ad8493e1db608a33104b52a14c59ae16753e446463359c1
MD5
4a8e540f6744989a736f5d5fd81f25f7

Malwares

  • ZLoader

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)
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
T1064 office_macros_suspicious: Document contains suspicious macro
T1562.001 office_security: Attempts to modify Microsoft Office security settings
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

T1555.003 cookie_files: Accesses cookie files
T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager
T1552 cookie_files: Accesses cookie files

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
office_summary: The document contains suspicious metadata
test_check_service: Starts services
writes_data: Writes big amount of data to disk

Related reports

Managed XDR