Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 7d8e6c64b3a09c9b…

MALICIOUS

Office (OLE)

43.5 KB Created: 2009-12-09 16:50:00 Authoring application: Microsoft Word 11.5.6
MD5: 0d3d41a4bda4212fccb41409443c6f9e SHA-1: 08b152ef05dc5b3b0dbd97686f389a9de440c8dd SHA-256: 7d8e6c64b3a09c9bc947e7826d4220d3b5937fa31f9241846a61dfab11cd28c9
180 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with critical heuristics firing for OLE VBA macros and a Document_Open macro. The VBA macro code, though truncated, indicates it attempts to manipulate document properties and potentially execute further actions. The presence of a Document_Open macro strongly suggests an attempt to execute malicious code upon opening the document, characteristic of a phishing attachment.

Heuristics 4

  • ClamAV: Doc.Trojan.Marker-40 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Marker-40
  • 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
8fd64a9fd248372ccfd0ec25ae80012332a41b46ec60b12a1b42f1e8fb27117c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4245 bytes
Detection
ClamAV: Doc.Trojan.Marker-2
Obfuscation or payload: unlikely

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