Managed XDR

c-users-user-desktop-book2.xls (ZLoader) — malware analysis report

File info

Filename
c-users-user-desktop-book2.xls
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 10.0, Code page: 1252, Author: Wedig, Rico, Last Saved By: Wedig, Rico, Name of Creating Application: Microsoft Excel, Create Time/Date: Mon Nov 3 13:23:32 2025, Last Saved Time/Date: Mon Nov 3 14:08:20 2025, Security: 0
File size
26.5 KB
First seen
Last seen

Environment

w10/x86 en

Hashes

SHA1
792b27c6a3f1121c38770c35e9c222390094bf66
SHA256
9111f88da0b4b97f712260e08a258a3452c9457c9a909ba5caf17f0c9dd615ff
MD5
da0aae986e90a23990ab8500c692ad7c

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
T1203 office_exploit_http: The document exhibits suspicious behaviour (performs HTTP requests)
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: 3)
T1064 office_macros_strings: Feature lines found in document macro
T1064 office_macros_autoexec: The document contains an auto-start macro

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_suspicious: Document contains suspicious macro
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1497 evasion_trustrecords: Attempts to detect Sandbox exploring trusted documents
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

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

Command and Control

T1105 office_dl_write_exe: Probably malicious office document (downloads/drops EXE files to disk)
T1071.001 office_exploit_http: The document exhibits suspicious behaviour (performs HTTP requests)
T1071.001 wininet_https: Performs HTTP/HTTPS requests using WinInet

Other

yara_rules: Static rules
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

Related reports

Managed XDR