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

Static analysis result for SHA-256 fba0c13176f30040…

MALICIOUS

Office (OLE) / .DOC

220.5 KB Created: 2017-06-06 11:28:00 Authoring application: Microsoft Office Word
MD5: f940fd3cacca2fc2b5d73c7d8b92df57 SHA-1: c4a405a7694bda0a96f5ae0c1717f5d39d9d24b3 SHA-256: fba0c13176f30040d6c78bb426ddaa5dd01afc45abb9b0ada8807f408167ca97
160 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with the signature 'Doc.Dropper.Agent-6328455-0'. Static analysis revealed the presence of VBA macros, specifically a 'Document_Open' macro that executes a shell command. This indicates the document is designed to download and execute a secondary payload, a common dropper behavior. No specific malware family could be confidently identified.

Heuristics 5

  • ClamAV: Doc.Dropper.Agent-6328455-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-6328455-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • 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://ns.adobe.com/xap/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
9498865b98ac8847b65c233334340533bb6a5515f8ccc250d0f29d6e6bba17bb		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 13821 bytes

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