Managed XDR

bad.xls (ZLoader) — malware analysis report

File info

Filename
bad.xls
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 10.0, Code page: 1252, Author: Sobhan Hedayati, Last Saved By: Sobhan Hedayati, Name of Creating Application: Microsoft Excel, Create Time/Date: Tue Jun 16 11:11:34 2026, Last Saved Time/Date: Tue Jun 16 11:15:33 2026, Security: 0
File size
25.5 KB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
4a90a4006069a179d22259a6ef653ac0f3990858
SHA256
2c3828aa5c49e22f1e6894fb4f42c241ddd38a6f3a53e6ba76b7353ce1403114
MD5
f68dcb5b89d45fc55ef3949ca0646757

Malwares

  • ZLoader

Signatures

Execution

T1203 suspicious_msapp: Suspicious execution of Microsoft Application (possible exploitation)
T1064 office_macros_hidden: Document contains suspicious Excel 4.0 macro
T1559 suspicious_process: Spawns a suspicious process
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: 3)
T1064 office_macros_strings: Feature lines found in document macro
T1064 office_macros_autoexec: The document contains an auto-start macro

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 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
T1055 injection_failed: The attempt to inject into a process has failed
T1064 office_macros: The document contains macroses (total: 3)
T1064 office_macros_strings: Feature lines found in document macro
T1064 office_macros_autoexec: The document contains an auto-start macro

Credential Access

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

Discovery

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
process_crashed: One of the processes has failed
unexpected_exception: Unexpected exception
office_summary: The document contains suspicious metadata
creates_suspended_process: Creates suspended process
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
dotnet_suspicious_cultureidentifier: Dotnet program contains invalid CultureIdentifier

Related reports

Managed XDR