Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 a4098a036b855de4…

MALICIOUS

Office (OLE)

48.0 KB Created: 2006-08-31 07:38:00 Authoring application: Microsoft Word 11.0
MD5: 9624254b4f1ef5fb4ff8f6d3cf399dfe SHA-1: 528774a0be6a60bb23bf2d40031de67a3bbeab61 SHA-256: a4098a036b855de4a25763d97f612940b9a0a28e22cdfdaa2339f418751c22ba
180 Risk Score

Malware Insights

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

The sample is an Office document containing VBA macros, specifically a Document_Open macro, which is a common delivery mechanism for malware. ClamAV detections further confirm its malicious nature. The embedded URLs are likely used to host or retrieve the malicious payload. The VBA macros are the primary mechanism for executing the attack, likely downloading and executing a second-stage payload.

Heuristics 5

  • 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
  • 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.dieter-huber.com/1000eventi-milano.html
    • http://www.dieter-huber.com/1000eventi-milano.htmlAIRBORNDa

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
a2a242daf2022a18fceb3b2c045188b5232c25988eb012d3eb05f2d5ab15463c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 5269 bytes
Detection
ClamAV: Doc.Trojan.Marker-2
Obfuscation or payload: unlikely

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