Managed XDR

proforma-inv-23698-a.xls (ZLoader) — malware analysis report

File info

Filename
proforma-inv-23698-a.xls
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 6.3, Code page: 1252, Title: aaa31, Subject: s48cb7, Last Saved By: Administrator, Name of Creating Application: Microsoft Excel, Create Time/Date: Tue Mar 26 22:05:22 2019, Last Saved Time/Date: Tue Mar 26 22:05:23 2019, Security: 0
File size
102.5 KB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
0353fb8e07cc97f466d33129b08e802f28c4852d
SHA256
38ee6a96a21875b85be8150999c45692a13d74fad1f66e5b2046a5b2930c36ea
MD5
946c3ed9b8b4f2aea07605761ae7c842

Malwares

  • ZLoader

Signatures

Execution

T1203 office_exploit_http: The document exhibits suspicious behavior (performs HTTP requests)
T1064 office_macros_hidden: Document contains suspicious Excel 4.0 macro
T1064 office_macros_suspicious: Document contains suspicious macro
T1064 office_macros: The document contains macroses (total: 4)
T1064 office_macros_autoexec: The document contains an auto-start 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)

Privilege Escalation

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

T1027 office_macros_hex_strings: Lines in hex found in document macro
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_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: 4)
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
T1083 checks_recent_files: Attempt to check recently opened files through registry
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

Command and Control

T1071.001 office_exploit_http: The document exhibits suspicious behavior (performs HTTP requests)
T1071.004 office_exploit_dns: The document exhibits suspicious behavior (performs DNS requests)
T1071.001 winhttp_https: Performs HTTP/HTTPS requests using WinHttp

Other

yara_rules: Static rules
suricata_alert: Malicious traffic detected
network_bind: Starts servers listening at None
dns_without_resolve: DNS query without a response
office_summary: The document contains suspicious metadata
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services

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