Sload — Office (OLE) malware analysis

Static analysis result for SHA-256 949cc3128d09f3b5…

MALICIOUS

Office (OLE)

116.2 KB Created: 2018-10-04 11:34:00 Authoring application: Microsoft Office Word First seen: 2020-02-04
MD5: 61ef85517f8ff936576c74c882976300 SHA-1: a7ff063a3ea7940b8fbd8edf4ceac27665ea09e5 SHA-256: 949cc3128d09f3b586619689f7fb340c49f274e6d905dfb936b33acef8e0ce0c
104 Risk Score

Malware Insights

Sload · 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.Malware.Sload-6794694-0'. A critical heuristic indicates that VBA p-code auto-execution is present, specifically triggering an execution token via the 'Document_Open' auto-macro and the 'Shell' command. Although VBA macros could not be directly extracted due to an unsupported format, the presence of these indicators strongly suggests the document is designed to run a malicious payload upon opening, likely delivered as a spearphishing attachment.

Heuristics 4

  • ClamAV: Doc.Malware.Sload-6794694-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Sload-6794694-0
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • 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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