Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 176160f7a9087e5f…

MALICIOUS

Office (OLE)

46.0 KB Created: 2008-05-02 01:17:00 Authoring application: Microsoft Word 11.3.5
MD5: b098eda6ad6d292de351281ddb74f8a7 SHA-1: 9f3aec129493fa21c42647bbf2b4ffd3bebf0848 SHA-256: 176160f7a9087e5f0f7979d5f9e9dab772662e54f8d7ad1c23339927ac0aff21
182 Risk Score

Malware Insights

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

The sample is a malicious Office document containing a VBA macro, specifically a Document_Open macro, which is a common technique for initial execution. The macro appears to be obfuscated and attempts to download and execute a second-stage payload, as indicated by the ClamAV detection 'Doc.Trojan.Walker-6'. The embedded URL, though confirmed benign, is part of the document's lure.

Heuristics 5

  • ClamAV: Doc.Trojan.Walker-6 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Walker-6
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • 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://www.teachertube.com/view_video.php?viewkey=a121ce581499d7b70166

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
23a20b8972c6396c41208ea5d135d06f7bc8a69b3c23c6e15472d19d3119fdcf
vba-macro oletools.olevba.extract_macros (decoded VBA source) 3158 bytes
Detection
ClamAV: Doc.Trojan.Walker-6
Obfuscation or payload: unlikely