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

Static analysis result for SHA-256 f8dcecae5fac8a61…

MALICIOUS

Office (OLE) / .DOC

245.8 KB Created: 2020-01-15 23:06:00 Authoring application: Microsoft Office Word
MD5: 949384990a10bb0d8132dd2d8e7182d4 SHA-1: 876f53015e0565011f8b367dc0fbb2a9a4f4a012 SHA-256: f8dcecae5fac8a61ebfb928a84098a4ef35024eaa2fa1ff3bef2dbce9603b4c7
200 Risk Score

Malware Insights

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

The file is a malicious OLE document containing a VBA macro that is automatically executed upon opening via the Document_Open event. The macro utilizes a GetObject call, indicating an attempt to download and execute a secondary payload. The ClamAV detection name further confirms its malicious nature. No specific family could be identified, but the delivery mechanism is clearly macro-based.

Heuristics 6

  • ClamAV: Doc.Malware.Chartres-7540857-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Chartres-7540857-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open 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
33d5873b42a689c4aba03c2d77433015bcef28fe1bc71bbbab6b5ef14fe9891e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10918 bytes

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