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

Static analysis result for SHA-256 13e04ea6015521c0…

MALICIOUS

Office (OLE) / .DOC

166.5 KB Created: 2021-01-22 08:32:00 Authoring application: Microsoft Office Word
MD5: 86e2d797de9e257a814150e2b9b277c6 SHA-1: a4d3be86e65e4ef9ee27f3d5fb2674d35407ba43 SHA-256: 13e04ea6015521c0c7eab99516a8039843a3eed70fbd439305a58728a0bda873
202 Risk Score

Malware Insights

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

The sample is a malicious Office document containing a Document_Open VBA macro. This macro is designed to execute obfuscated code, which is a common technique for downloading and running additional malware. The ClamAV detection name 'Doc.Malware.Emodldr-10033991-0' further supports its malicious nature. The VBA code's obfuscation and the presence of a Document_Open auto-execution macro strongly suggest a downloader or droppper functionality.

Heuristics 6

  • ClamAV: Doc.Malware.Emodldr-10033991-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emodldr-10033991-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject 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
aca9316956f3c2042a2002b787c0059c1e5a646e44f317e6951449e0af5acb97
vba-macro oletools.olevba.extract_macros (decoded VBA source) 16802 bytes