Managed XDR

11.xls (ZLoader) — malware analysis report

File info

Filename
11.xls
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 10.0, Code page: 1252, Title: KTDNho, Author: ThanhMai, Last Saved By: TGPM, Name of Creating Application: Microsoft Excel, Last Printed: Wed Jul 22 03:25:52 2026, Create Time/Date: Mon Oct 20 04:06:04 2003, Last Saved Time/Date: Wed Jul 22 04:09:57 2026, Security: 0
File size
27.9 MB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
23a8c2cc79f5e969a19aa9d60273fdc2e5886a4e
SHA256
ece443e99b62c46aa64ab9b35c79cdc2c7d1cb659fb17a32a7e89645c6e1d9f8
MD5
24342d9addb6f85c2ee97525f75a9ede

Malwares

  • ZLoader

Signatures

Execution

T1064 office_macros_hidden: Document contains suspicious Excel 4.0 macro
T1047 antivm_wmi: Uses WMI to detect virtual environment
T1047 has_wmi: Executes one or several WMI requests
T1064 office_macros: The document contains macro
T1064 office_macros_autoexec: The document contains an auto-start macro
T1204.002 office_com_load: Microsoft Office loads COM DLL files (indicator of COM usage in macros)

Privilege Escalation

T1055 injection_failed: The attempt to inject into a process has failed

Defense Evasion

T1064 office_macros_hidden: Document contains suspicious Excel 4.0 macro
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1064 office_macros: The document contains macro
T1064 office_macros_autoexec: The document contains an auto-start macro
T1055 injection_failed: The attempt to inject into a process has failed
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497 evasion_trustrecords: Attempts to detect Sandbox exploring trusted documents
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization

Credential Access

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

Discovery

T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1057 has_wmi: Executes one or several WMI requests
T1082 has_wmi: Executes one or several WMI requests
T1518 locates_browser: Attempts to identify where browsers are installed
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497 evasion_trustrecords: Attempts to detect Sandbox exploring trusted documents
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization
T1083 checks_recent_files: Attempt to check recently opened files through registry

Command and Control

T1071.001 winhttp_https: Performs HTTP/HTTPS requests using WinHttp

Other

yara_rules: Static rules
network_bind: Starts servers listening at None
dns_without_resolve: DNS query without a response
office_summary: The document contains suspicious metadata
break_limit_exceeded: Warning: function calls limit has been exceeded
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services

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