Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 2d9e050ab72720f7…

MALICIOUS

Office (OLE)

64.0 KB Created: 2000-01-17 19:42:00 Authoring application: Microsoft Word 8.0
MD5: d9eefdf550ba13332ca0b4bbeda8ae04 SHA-1: e8f6dc782f74afcfb6d43b1048b62c3572b727d8 SHA-256: 2d9e050ab72720f78891db150ab4c088d89105aa7ab0ccfe096d3733e3b328a1
240 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample is identified as malicious by ClamAV with multiple critical heuristic firings, including the presence of VBA macros and a Shell() call. The extracted artifact 'macros.bas' confirms the presence of VBA code. The Shell() function is a strong indicator that the macro attempts to execute arbitrary commands, likely to download and run a second-stage payload. The benign URLs present in the document body do not appear to be related to the malicious functionality.

Heuristics 6

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • ClamAV: Doc.Trojan.Marker-31 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Marker-31
  • 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://infopad.eecs.berkeley.edu/CIC/
    • http://www.ece.uprm.edu/~joseiq

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
40ebf5d022b6162b01e61a73459a845ce78a51b4de9b8142248cfb01d7926245		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 22628 bytes
Detection
ClamAV: Doc.Trojan.Marker-1
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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