Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 579addf4ae37a3dd…

MALICIOUS

Office (OLE)

37.5 KB Created: 2021-07-06 04:33:00 Authoring application: Microsoft Office Word
MD5: a02e887652e44ac767e944932f3913ca SHA-1: e00d91e02e805e7412811b2045ed5001712f7c45 SHA-256: 579addf4ae37a3dd7a0e2238354f81e8265d1acf0715120f472afb5bcad8c54f
162 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains VBA macros that utilize CreateObject and CallByName functions, indicative of malicious intent. The macros appear to be designed to display a fake error message and then present a feedback form, likely to collect user input or download a second-stage payload. The embedded URL https://feedbackportal.download/ecm/ibm/1626879752/feedback is a strong indicator of a command and control server or payload distribution point.

Heuristics 5

  • ClamAV: Doc.Downloader.Valyria-10033997-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Valyria-10033997-0
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • CallByName call high OLE_VBA_CALLBYNAME
    CallByName call
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • 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://feedbackportal.download/ecm/ibm/1626879752/feedback
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
18e58ca9644ad789397b9183a606ed6c65314d90f1948337aade13175b902f8a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2880 bytes

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