Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 241299c1748425d6…

MALICIOUS

Office (OLE)

56.5 KB Created: 2010-02-08 21:03:00 Authoring application: Microsoft Macintosh Word
MD5: 8a9ff06c65e41b9d698696adb8eb1f1b SHA-1: 0ffc0a1a535a57a49455133fac27ed7395cb5e89 SHA-256: 241299c1748425d6240e905719500ef218e8d5168ca503a245a94c1feb672a60
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The file is an Office document containing VBA macros, specifically a Document_Open macro, which is a common delivery mechanism for malware. The document body presents a seemingly innocuous school project assignment to trick the user into enabling macros. Upon enabling, the Document_Open macro executes, leading to the detection of 'Doc.Trojan.Thus-8' by ClamAV. The exact payload and behavior are not detailed, but the presence of the Document_Open macro strongly suggests it's designed to download and execute a secondary payload.

Heuristics 5

  • ClamAV: Doc.Trojan.Thus-8 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Thus-8
  • 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://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
03e7c4d84299c5bb152e32aee49f164fe982384024781b49b560baeffef12827		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2338 bytes
Detection
ClamAV: Doc.Trojan.Thus-8
Obfuscation or payload: unlikely

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