Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 4a76ce72c6b58399…

MALICIOUS

Office (OOXML)

172.2 KB Created: 2014-07-08 19:37:28 UTC Authoring application: Microsoft Macintosh Excel 16.0300 First seen: 2020-02-04
MD5: b7cae8d7dd91a60d63add6dd4f2954b8 SHA-1: f3202245b09dece5a64b4858f4ce52018530c877 SHA-256: 4a76ce72c6b58399a6560b7bb2c77359e3f5fe79fd17a8648b87a695393820a1
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File T1059.005 Visual Basic

The document body contains a lure instructing the user to enable editing and macros to view spreadsheet content. Heuristics indicate the presence of a remote image beacon and external hyperlinks, both pointing to the domain 'invoices.phishing.guru'. This suggests the file is designed to download and execute a secondary payload, consistent with a downloader trojan.

Heuristics 6

  • ClamAV: Xls.Downloader.Trojan-b333b3b333898c4c-b333b3b333898c4c-9950284-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Downloader.Trojan-b333b3b333898c4c-b333b3b333898c4c-9950284-0
  • Remote image (web beacon / tracking pixel) medium OOXML_IMAGE_BEACON
    Document references an external image URL — loads automatically on open, revealing IP address and timestamp to the server (used for phishing tracking and NTLM hash theft on corporate networks)
  • External relationship medium OOXML_EXTERNAL_REL
    External target in xl/drawings/_rels/drawing1.xml.rels: http://invoices.phishing.guru/XcmVTjaXBpZWv50X2lkPTTEyNTTA0ZNzU5iJmNhbXBhzaWVduX3J1bl9pZD0zODU5SNSZhY3Rpb249YXR0YWNobWVu
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • External hyperlinks (1) low OOXML_EXTERNAL_HYPERLINKS
    Document contains 1 external hyperlink — clickable URLs are stored as external relationships. First target: http://invoices.phishing.guru/XcmVijaXBpZWQ50X2lkPTMEyNTvA0vNzU5pJmNhbXBhUaWNduX3J1bl9pZD0zODU5eNSZhY3Rpb249Y2xpY2smdXJsPWh0dHBzOi8vZXUua25vd2JlNC5jb20vcGFnZXMv
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://invoices.phishing.guru/XcmVTjaXBpZWv50X2lkPTTEyNTTA0ZNzU5iJmNhbXBhzaWVduX3J1bl9pZD0zODU5SNSZhY3Rpb249YXR0YWNobWVudA== OOXML external relationship
    • http://invoices.phishing.guru/XcmVijaXBpZWQ50X2lkPTMEyNTvA0vNzU5pJmNhbXBhUaWNduX3J1bl9pZD0zODU5eNSZhY3Rpb249Y2xpY2smdXJsPWh0dHBzOi8vZXUua25vd2JlNC5jb20vcGFnZXMvDocument hyperlink
    • http://invoices.phishing.guru/XcmVijaXBpZWQ50X2lkPTMEyNTvA0vNzU5pJmNhbXBhUaWNduX3J1bl9pZD0zODU5eNSZhY3Rpb249Y2xpY2smdXJsPWh0dHBzOi8vZXUua25vd2JlNC5jb20vcGFnZXMvYjZiZDE2OGNmNzI1Document hyperlink
    • http://invoices.phishing.guru/XcmVTjaXBpZWv50X2lkPTTEyNTTA0ZNzU5iJmNhbXBhzaWVduX3J1bl9pZD0zODU5SNSZhY3Rpb249YXR0YWNobWVuOOXML external relationship

Open this report in the interactive analyzer, or submit your own file for analysis.