Powload — Office (OLE) malware analysis

Static analysis result for SHA-256 76c65512154ad7ec…

MALICIOUS

Office (OLE)

126.9 KB Created: 2018-10-03 15:14:00 Authoring application: Microsoft Office Word First seen: 2019-05-31
MD5: 81daa6a84900749c18ef91f9e6e82847 SHA-1: f4f857a16bc30f9e14869f764a124f5a77d85d50 SHA-256: 76c65512154ad7ecca16c69ab62f8552dbe9b5b89a34be6a719ef11c1b22888c
84 Risk Score

Malware Insights

Powload · confidence 95%

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

The file is identified as malicious by ClamAV with the signature Doc.Downloader.Powload-6790264-0. A legacy WordBasic AutoOpen macro marker was detected, indicating an attempt to automatically execute malicious code upon opening the document. Although VBA extraction failed, the presence of the AutoOpen marker and the ClamAV detection strongly suggest a downloader payload.

Heuristics 4

  • ClamAV: Doc.Downloader.Powload-6790264-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Powload-6790264-0
  • Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXEC
    OLE Word document contains a legacy WordBasic auto-execution marker such as AutoOpen, but no modern VBA project was recovered and no stronger macro-virus family marker was present. This is analyst-facing evidence for old Word macro execution surface, not a downloader or parser-CVE attribution by itself.
  • Unsupported Office format for VBA extraction info OFFICE_FORMAT_UNSUPPORTED
    olevba could not extract VBA macros (AssertionError); format-agnostic byte-level scans still ran. Likely legacy, encrypted, or malformed OLE/OOXML — re-scanning the same bytes will yield the same outcome.
  • 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://schemas.openxmlformats.org/drawingml/2006/main In document text (OLE body)

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