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

Static analysis result for SHA-256 abc2ad510e272957…

MALICIOUS

Office (OOXML)

247.3 KB Created: 2020-12-08 15:40:16 UTC Authoring application: Microsoft Excel 16.0300 First seen: 2021-07-10
MD5: 39293abe995a0e464129d67c099ce09d SHA-1: d6646c37ebca2a7edf68f54852d82faac8aa53af SHA-256: abc2ad510e2729578f16ddd3bc5a3077edf6a7406d45cb40bfe6aa51a71d7667
90 Risk Score

Malware Insights

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

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The critical ClamAV heuristic identifies the file as Xls.Downloader.Agent08210-9888570-0, a known downloader. The OOXML_CLICKABLE_IMAGE_FORM_LURE heuristic indicates the presence of a phishing lure using a clickable image, directing the user to the external URL. This suggests the document is designed to facilitate initial access via spearphishing, likely to download a secondary payload.

Heuristics 4

  • 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://8734343.mfs.gg/QUWX9aU
  • 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://8734343.mfs.gg/QUWX9aU Document hyperlink

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