Qbot — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 b510e4752e075dc1…

MALICIOUS

Office (OLE) / .XLS

47.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: d42c213650df3d3c6ef55cb3a0e7ffea SHA-1: e46412b0a13bdf037dcf533957bcaba387f13066 SHA-256: b510e4752e075dc12dec42e62e7427c34a858c091f0345f300bef3033970cc4b
200 Risk Score

Malware Insights

Qbot · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1204.002 Malicious File T1059.001 PowerShell T1105 Ingress Tool Transfer

The file contains Excel 4.0 macros, specifically an Auto_Open function that utilizes dangerous APIs like RUN and URLDownloadToFile. This indicates an attempt to download and execute a secondary payload. The presence of a macro-enable lure further supports this. ClamAV detection as Xls.Dropper.Qbot-9798074-0 strongly suggests the Qbot family.

Heuristics 6

  • Reference to URLDownloadToFile API critical SC_STR_URLDOWNLOAD
    Reference to URLDownloadToFile API
  • ClamAV: Xls.Dropper.Qbot-9798074-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Dropper.Qbot-9798074-0
  • XLM Auto_Open with dangerous formula APIs high OLE_XLM_DANGEROUS_FN
    Excel 4.0 macro sheet contains an Auto_Open / Auto_Close entry and dangerous XLM formula APIs that can invoke programs, write files, or transfer control without VBA.
  • Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPEN
    Workbook contains an Excel 4.0 macro sheet sub-stream — XLM is rarely seen in modern legitimate workbooks and was a major Office malware vector during 2020-2022.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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 http://china.asiaspain.com/tertgev/�
    • http://china.asiaspain.com/tertgev/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
857fae3dde766526b3de621d7f48e792e1a3a31b0bb941d6893cf28f50d31b35		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 3017 bytes

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