Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 e649e19515cbdcdf…

MALICIOUS

Office (OLE)

103.0 KB Created: 2009-04-12 17:31:00 Authoring application: Microsoft Word 11.5.0
MD5: a8c2cc27aee1a757c621dc8e17f0aec1 SHA-1: cd204404d0fb88e5253209cbf192d67862223ddd SHA-256: e649e19515cbdcdf3f3b311a85919cf6cf6ff1ed82769927bfff30d6fc0cc86b
240 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell

The file is identified as malicious by ClamAV and contains VBA macros. A critical heuristic indicates the presence of a Shell() call within the VBA code, suggesting an attempt to execute external commands. The extracted artifact 'macros.bas' is a VBA macro file, further supporting this. The primary function appears to be the execution of a secondary payload via the Shell() command, as indicated by the critical heuristic. The document body content is unrelated to the malicious functionality.

Heuristics 6

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • ClamAV: Doc.Trojan.Marker-5 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Marker-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.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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.apple.com/DTDs/PropertyList-1.0.dtd

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
e0c793f54e5731623cf63053525a41473c41b78f6b9a6bf004ac16a08b90b69f		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6752 bytes
Detection
ClamAV: Doc.Trojan.Marker-5
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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