Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 0cfd48d659357dfe…

MALICIOUS

Office (OLE)

153.6 KB Created: 2020-09-14 22:09:00 Authoring application: Microsoft Office Word
MD5: cc8a034304529941135ccf73bc421f3d SHA-1: a87a7d97cf10af6b60d9cc6961123f63ccc060ff SHA-256: 0cfd48d659357dfe98c08ed94a2aea6daf06a9bf7c06c092d529055fb592c179
202 Risk Score

Malware Insights

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

The sample is a malicious Office document containing VBA macros. The 'Document_Open' macro is present and uses 'CreateObject', indicating an attempt to execute code. The ClamAV heuristic also flags it as malware. The VBA code appears to be obfuscated, but the presence of 'CreateObject' and the 'Document_Open' auto-execution strongly suggests it's designed to download and execute a secondary payload.

Heuristics 6

  • ClamAV: Doc.Malware.Generic-9760527-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Generic-9760527-0
  • 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
bf2dc6e4793502154f28a14458af4f5198ccc48932a5641a4c34f7f1fcdc0c82		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18582 bytes

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