Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 04fc8eb6365b5e11…

MALICIOUS

Office (OLE)

154.7 KB Created: 2020-09-14 19:47:00 Authoring application: Microsoft Office Word
MD5: 8ee1f2fee82986cec34b4ffbe0543b52 SHA-1: 2a83e607177149a6d07a6447ef49c62363131fd6 SHA-256: 04fc8eb6365b5e1141a8fff68a48eba572c8a6a61704cf384ed3fd9de537e908
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample contains VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating an attempt to execute code. The ClamAV detection and heuristic firings strongly suggest malicious intent. The VBA macro code is obfuscated, but the presence of the Document_Open auto-execution and the CreateObject call points to a downloader or dropper functionality. No specific family could be identified due to the obfuscation.

Heuristics 6

  • ClamAV: Doc.Malware.Generic-9760307-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Generic-9760307-0
  • 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
0b6180fea2f2eb783f5bda16a3b3f9aadc8aaa21f7b3f16e95bf573cb2bafb66		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18514 bytes

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