Malicious Office (OLE) / .DOC — malware analysis report

Static analysis result for SHA-256 a2f17c1641ee546b…

MALICIOUS

Office (OLE) / .DOC

165.0 KB Created: 2016-06-27 17:12:00 Authoring application: Microsoft Office Word
MD5: 1cda8abe2fa26f6fe4856b91a3595baf SHA-1: cde3a3ea660e37279b9ee7d32ce22bb6ec3fcc79 SHA-256: a2f17c1641ee546b3d4578d2ff77b976d7ba8a10a0e302ea328f5e54762cb225
188 Risk Score

Malware Insights

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

The file is a Microsoft Office document containing VBA macros, as indicated by the OLE_VBA_MACROS heuristic. The SE_ENABLE_LURE heuristic confirms the document instructs the user to enable macros. The critical ClamAV detection and high EXTRACTED_FILE_STATIC_TRIAGE heuristic suggest this is a dropper. The macros likely download and execute a second-stage payload, a common dropper behavior.

Heuristics 7

  • ClamAV: Doc.Dropper.Agent-6023246-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-6023246-0
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • 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
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
  • 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.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/photoshop/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/tiff/1.0/
    • http://ns.adobe.com/exif/1.0/
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
31b5489830116a23b00ef3d42565a1f4b3174557fd9c88e7041ec68e7aab8cf3		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 3512 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 80 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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