Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 d2ee4a89cda00a95…

MALICIOUS

Office (OLE)

36.0 KB Created: 2007-08-22 14:58:00 Authoring application: Microsoft Word 11.3.5
MD5: 868cafe6f023e949c0f0bad4632389b1 SHA-1: c7ae876868effcc9a3cded867470cffc0d7363db SHA-256: d2ee4a89cda00a9596c1dadb0696cb863d580caea1aa58ebfdeda341ede61e0a
180 Risk Score

Malware Insights

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

The sample is an Office document containing VBA macros, specifically a Document_Open macro, which is a common technique for initial execution. The document body presents as a school course description, a common lure to trick users into enabling macros. The presence of VBA macros and the Document_Open trigger strongly suggest the intent is to execute malicious code upon opening the document, likely to download a second-stage payload.

Heuristics 4

  • ClamAV: Doc.Trojan.Eight941-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Eight941-1
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
549bc4cc40e974433e8de5583b5f6ce79c29971cca271e66c629ee6fc496ffe1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2844 bytes
Detection
ClamAV: Doc.Trojan.Eight941-1
Obfuscation or payload: unlikely

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