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

Static analysis result for SHA-256 922824828e9d61e9…

MALICIOUS

Office (OLE) / .DOC

34.0 KB Created: 2016-12-16 11:19:00 Authoring application: Microsoft Office Word
MD5: ba4afb8bb89f4a8f103780c416ecdbdd SHA-1: c0d2750c0607ed3be68fbd80edd84cd7afadf343 SHA-256: 922824828e9d61e9039c7c1079b44b080e771933b164f5a438a17fa2132baf25
260 Risk Score

Malware Insights

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

The file is a malicious Office document containing VBA macros. The AutoOpen macro, along with the detected Shell() call and p-code execution, strongly indicates that the script's purpose is to download and execute a second-stage payload. The ClamAV signature 'Doc.Dropper.Downloader-6398265-0' further supports this dropper functionality.

Heuristics 7

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • ClamAV: Doc.Dropper.Downloader-6398265-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Downloader-6398265-0
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen 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.
  • 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://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
6d630aab20325b264467e94e6ab053c7abfde04dd9065b7e28743c44fb011e1e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2331 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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