Malicious Office (OOXML) / .XLSX — malware analysis report

Static analysis result for SHA-256 904f9d31ecf07301…

MALICIOUS

Office (OOXML) / .XLSX

21.4 KB Created: 2006-09-16 00:00:00 UTC Authoring application: Microsoft Excel 14.0300
MD5: b3b91a5f5d2ecfd99ba4a3e8a31c4270 SHA-1: a99dd4f6d216085512b4c2861d3c06e22e9b77c9 SHA-256: 904f9d31ecf073011770e701b75ffbf79d87cb79894cb8329d0e2efbf4ca1e1e
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The file is identified by ClamAV as a known dropper, indicating its primary purpose is to deliver other malware. While no specific VBA or script content was extracted, the heuristic strongly suggests a malicious intent to download and execute a secondary payload, fitting the pattern of a macro-based downloader.

Heuristics 1

  • ClamAV: Xls.Dropper.QbotDocu12020-9818439-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Dropper.QbotDocu12020-9818439-0