Qbot — Office (OOXML) / .XLSX malware analysis

Static analysis result for SHA-256 b99f33b970551200…

MALICIOUS

Office (OOXML) / .XLSX

29.5 KB Created: 2006-09-16 00:00:00 UTC Authoring application: Microsoft Excel 14.0300
MD5: 7da6c42b87d4ff2b5ff941a4be775509 SHA-1: 3270fad8ecd4c88e78841072f003e5c81f9d9ab2 SHA-256: b99f33b97055120038360bf69fa6096f0ad69104d20b2559a7caa631a26b5db8
60 Risk Score

Malware Insights

Qbot · confidence 95%

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1105 Ingress Tool Transfer

The file is identified by ClamAV as 'Xls.Dropper.QbotDocu12020-9818439-0', strongly indicating it functions as a dropper for the Qbot malware family. The presence of macro-related heuristics suggests it likely uses embedded VBA to download and execute a secondary payload, a common tactic for Qbot distribution. This pattern aligns with spearphishing attachments used to deliver malware.

Heuristics 1

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

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