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

Static analysis result for SHA-256 7cb86db8025b08d0…

MALICIOUS

Office (OLE) / .DOC

163.5 KB Created: 2020-09-17 22:39:00 Authoring application: Microsoft Office Word
MD5: d3b839549d15c6019d201391fd2d95f0 SHA-1: f578992ec628f5c6b5d5043bb56a57b6fceae361 SHA-256: 7cb86db8025b08d00d0942d4983051b9ef6134430dd1fa0d1112e7cec4c2f32d
202 Risk Score

Malware Insights

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

The file contains VBA macros, specifically a Document_Open macro, which is a common technique for executing malicious code upon opening a document. The macro uses CreateObject, indicating an attempt to instantiate objects for potentially harmful actions. The ClamAV detection as 'Doc.Downloader.Generic' strongly suggests the macro's purpose is to download and execute a secondary payload. No specific family could be identified, but the overall behavior points to a downloader.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9763145-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9763145-0
  • 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
1e2a7d06314ac88dde2877d244d6ca5e91533ec592ad1318aa4aab91c451ca9e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 21979 bytes

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