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

Static analysis result for SHA-256 def5fcf2deee8122…

MALICIOUS

Office (OLE) / .DOC

30.0 KB Created: 2021-02-07 00:52:00 Authoring application: Microsoft Office Word
MD5: b6e42acc9e47f58d5d298cf9c252f4cb SHA-1: 18d7c4eb7b5175a70bce41e48d5ad6192bdc2ce8 SHA-256: def5fcf2deee81225717b4c2b1b262fea5c2a6e2f80f864e1ef8b5df37cff208
140 Risk Score

Malware Insights

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

The sample is a malicious DOC file containing VBA macros. The presence of an AutoOpen macro and a GetObject call indicates that the macros are designed to execute automatically when the document is opened. The script's intent is to download and execute a second-stage payload, though the specific mechanism is obfuscated. The document body is unreadable binary data, providing no contextual clues.

Heuristics 5

  • 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
6662cacddf0fa181e666eafcfdc6fbed4906259f9f08c6d80481103094a5669b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1754 bytes

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