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

Static analysis result for SHA-256 0a2ff4afd2e588f0…

MALICIOUS

Office (OLE) / .DOC

175.5 KB Created: 2021-01-22 10:24:00 Authoring application: Microsoft Office Word
MD5: ec91618bddc4b8b589a3575a1a59e1c8 SHA-1: f2889f3892c2a526e7d6958c7a185c448f89df1b SHA-256: 0a2ff4afd2e588f01318b744aa450f222e26677ea851b068bdf0255e2a8c04e0
202 Risk Score

Malware Insights

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

The sample is a malicious OLE document containing a VBA macro that is automatically executed upon opening via the Document_Open subroutine. The macro uses CreateObject and obfuscated code, indicating an attempt to download and execute a secondary payload. The ClamAV detection 'Doc.Malware.Emodldr-10033991-0' further supports its malicious nature.

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
b797bdff6d18edabc5d90a8d419e6bd318927838a8eade718328ed83a496b8ac		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16627 bytes

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