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

Static analysis result for SHA-256 4db5fdb6b080471a…

MALICIOUS

Office (OOXML)

251.0 KB Created: 2021-06-07 17:47:41 UTC Authoring application: Microsoft Excel 16.0300 First seen: 2021-09-13
MD5: 2c5db7ff2f0bfc3195cc8c72d3164229 SHA-1: a166fa048e4486f02c4438f27b327c23d8e17de0 SHA-256: 4db5fdb6b080471acf0743275aa4129c93a52652a2cb5efc0771615310bae3eb
86 Risk Score

Malware Insights

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

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is detected as Xls.Downloader.Agent08210-9888570-0 by ClamAV, indicating it is a downloader. The document body contains invoice-related language, and a heuristic identifies it as a fake invoice lure. It also contains an external hyperlink to 'https://mcrosoftsoffice365web.mfs.gg/xKs9le1', which is likely used to download a secondary payload.

Heuristics 5

  • ClamAV: Xls.Downloader.Agent08210-9888570-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Downloader.Agent08210-9888570-0
  • External hyperlinks (1) low OOXML_EXTERNAL_HYPERLINKS
    Document contains 1 external hyperlink — clickable URLs are stored as external relationships. First target: https://mcrosoftsoffice365web.mfs.gg/xKs9le1
  • External workbook data link low OOXML_EXTERNAL_REL_DATALINK
    External workbook reference in xl/pivotCache/_rels/pivotCacheDefinition1.xml.rels: JMS ENGINEERED PLASTICS INC_SOA_June.xlsx
  • 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://mcrosoftsoffice365web.mfs.gg/xKs9le1 Document hyperlink

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