Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 a203b6af59485d57…

MALICIOUS

Office (OLE)

233.2 KB Created: 2019-03-15 21:12:00 Authoring application: Microsoft Office Word
MD5: dc33b60de2887a2a51d74adb69f8b6de SHA-1: bbd992217dc9506f980a70b833821d4de4e13689 SHA-256: a203b6af59485d57d4530f2ba99f787233466005eef20da05b17976311370e2f
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is an Office document containing VBA macros, specifically an AutoOpen macro that uses GetObject. This combination strongly suggests malicious intent, likely to execute a secondary payload. The ClamAV detection ID 'Doc.Malware.Droo-6896835-0' further supports its malicious nature. The VBA code itself is heavily obfuscated, preventing a detailed analysis of its specific actions beyond the initial execution trigger.

Heuristics 6

  • ClamAV: Doc.Malware.Droo-6896835-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Droo-6896835-0
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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.
  • 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://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
1d105597f7e784cb68577ec72fa5622ceae4f1b9f9796e020640ba6bbdaa6f01		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 60289 bytes

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