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

Static analysis result for SHA-256 461cc56202efe699…

MALICIOUS

Office (OLE) / .DOC

161.0 KB Created: 2016-09-27 13:25:00 Authoring application: Microsoft Office Word
MD5: 88bd89ba01e29566c290937bf037ece3 SHA-1: d37790685a9b831c657a6ec1b4388f9cfee9c7c2 SHA-256: 461cc56202efe699ec30d79c185e94e9bb7987195e2f2c2e96983a5f644f708b
242 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with the signature 'Doc.Dropper.Agent-6543417-0'. Static analysis revealed the presence of VBA macros, specifically a 'Document_Open' macro that utilizes 'CreateObject'. This indicates the macro is designed to execute code upon opening the document, likely to download and run a secondary payload. The obfuscated nature of the VBA script prevents a more detailed analysis of its specific actions.

Heuristics 7

  • ClamAV: Doc.Dropper.Agent-6543417-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-6543417-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • 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.
  • 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://ns.adobe.com/xap/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/camera-raw-settings/1.0/
    • http://ns.adobe.com/photoshop/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
892813fb98a5708cc1a714d612d733a541cb1723e9dde0abb40d33342e8c321d		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 12751 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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