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

Static analysis result for SHA-256 06b86e35e985fee3…

MALICIOUS

Office (OLE) / .DOC

184.0 KB Created: 2020-10-22 06:54:00 Authoring application: Microsoft Office Word
MD5: 21a5e0d7240da2ad3f17265f83f92276 SHA-1: c7fa83ac2e5f2059a7cdb3b2e2b6a2b852b2ceba SHA-256: 06b86e35e985fee3edf6863adbb7aa0ca5dfb2fa3965fa7430152a0fc787232b
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1140 Deobfuscate/Decode Files or Information

The file contains a VBA macro that is automatically executed upon opening the document, as indicated by the Document_Open macro and CreateObject heuristic firings. The macro code is heavily obfuscated, suggesting an attempt to hide its true functionality, which is likely to download and execute a secondary payload. The ClamAV detection name 'Doc.Downloader.Logan-9781905-0' further supports this conclusion.

Heuristics 6

  • ClamAV: Doc.Downloader.Logan-9781905-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Logan-9781905-0
  • 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
9979b97c308d841b566985c48e8a84b999556c3e27641c5af6c36c44f3b0664e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18953 bytes

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