Xls.Downloader.Agent08210-9888570-0 — Office (OOXML) malware analysis

Static analysis result for SHA-256 693a2dd0d6fc6af2…

MALICIOUS

Office (OOXML)

282.4 KB Created: 2020-12-17 16:34:42 UTC Authoring application: Microsoft Excel 16.0300
MD5: 62dab30ea0128a0f46cbeebd6543abb4 SHA-1: fad61c0dd142c0d0dc2b03b182f10628d45823c8 SHA-256: 693a2dd0d6fc6af288001928bc8c9fc8896d880135eb7cdcaa04efa47fd726d6
98 Risk Score

Malware Insights

Xls.Downloader.Agent08210-9888570-0 · confidence 95%

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is detected as a downloader by ClamAV and exhibits characteristics of a phishing lure, specifically a fake invoice or payment advice. It contains an external hyperlink to a suspicious URL, which is likely used to deliver a secondary payload. No scripts were extracted, but the presence of the lure and the downloader detection strongly suggest a malicious intent.

Heuristics 5

  • ClamAV: Xls.Downloader.Agent08210-9888570-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Downloader.Agent08210-9888570-0
  • OOXML clickable image phishing/form lure medium OOXML_CLICKABLE_IMAGE_FORM_LURE
    Workbook uses a large embedded image as the visible document body and attaches a click-through external hyperlink to that image. The target is a form/collection service or the drawing contains download/view lure text, which is a common credential or document-phishing pattern rather than benign workbook data.
  • External hyperlinks (1) low OOXML_EXTERNAL_HYPERLINKS
    Document contains 1 external hyperlink — clickable URLs are stored as external relationships. First target: https://www.formtools.com/f/micr0soft0ffice365mail-1537
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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 https://www.formtools.com/f/micr0soft0ffice365mail-1537

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