Malicious Office (OLE) / .DOC — malware analysis report

Static analysis result for SHA-256 176fc8d7c9b76655…

MALICIOUS

Office (OLE) / .DOC

229.0 KB Created: 2019-03-15 21:12:00 Authoring application: Microsoft Office Word
MD5: fee1dc16c056a7c4bc66555904feb5ba SHA-1: 22bdb643e3ecdd2bde6ce69a292c2be04329136b SHA-256: 176fc8d7c9b766558643e303d26923c6fa2986729865aacc86f3221f2c97f05e
202 Risk Score

Malware Insights

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

The sample is a malicious OLE document containing VBA macros, specifically an AutoOpen macro that uses GetObject, indicating an attempt to execute code. The ClamAV detection and heuristic firings strongly suggest this is a downloader or droppper. The VBA code is heavily obfuscated, making it difficult to determine the exact payload or destination, but the presence of macros and the AutoOpen function points to a common attack vector for delivering further malware.

Heuristics 6

  • ClamAV: Doc.Malware.Droo-6896835-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Droo-6896835-0
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • GetObject call high OLE_VBA_GETOBJ
    GetObject call
  • 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.
  • 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 http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
1d105597f7e784cb68577ec72fa5622ceae4f1b9f9796e020640ba6bbdaa6f01		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 60289 bytes

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