Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 ed1414585167b940…

MALICIOUS

Office (OLE)

33.0 KB Created: 2007-09-16 20:09:00 Authoring application: Microsoft Word 11.3.5
MD5: 34cde8671d77b3008ce1ebfedbe24095 SHA-1: 202d4b86e1fce8f6d1a98dba578daae2cbdded06 SHA-256: ed1414585167b940e61212d66afeb5e8aec1e8f6f218ded7bafc06f756a7e597
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1204.002 Malicious File

The file is an Office document containing VBA macros, specifically a Document_Open macro, which is a common technique for initial execution. The document body presents an academic topic, likely a lure to trick the user into enabling macros. The presence of the Document_Open macro suggests an intent to automatically execute malicious code upon opening the document, which is likely a downloader for a secondary payload.

Heuristics 4

  • ClamAV: Doc.Trojan.Thus-5 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Thus-5
  • 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
5f3a97e4fb281c182a72f372fc3fa336cfd5e05720d991c712b1da70b22d3ac6		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2343 bytes
Detection
ClamAV: Doc.Trojan.Thus-5
Obfuscation or payload: unlikely

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