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

Static analysis result for SHA-256 8c7b924899b4b82b…

MALICIOUS

Office (OLE) / .DOC

171.5 KB Created: 2021-01-25 09:28:00 Authoring application: Microsoft Office Word
MD5: aa144b18e87dc894754cd2ba54319f14 SHA-1: eceec9e20a6f53e0b955e905cf5d21318e5b624f SHA-256: 8c7b924899b4b82bfeb269fcc21d825d6143ec284d38e6ae79975fc6c8021c67
200 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. The presence of a Document_Open macro and a GetObject call indicates that the macros are designed to execute automatically when the document is opened. The ClamAV detection further confirms its malicious nature. The document body content is heavily obfuscated and does not provide clear user-facing text, but the macro execution is the primary indicator of malicious intent.

Heuristics 6

  • ClamAV: Doc.Malware.Valyria-10034158-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Valyria-10034158-0
  • 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
f3c1208957a8588b8a5352b63af9a94a87401fa2b1f98d6dafce63f68312781e
vba-macro oletools.olevba.extract_macros (decoded VBA source) 8529 bytes