Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 5ad618126d3a4620…

MALICIOUS

Office (OLE)

140.1 KB Created: 2020-10-15 11:18:00 Authoring application: Microsoft Office Word
MD5: c363b7f97246c2060e920cfbca68e296 SHA-1: 7d98366d4452d057b2c8cc1d2864935e0049a8ea SHA-256: 5ad618126d3a4620ccfcf17d3e8f5d4d6550ad44b24a5d874a9cbf33d8976d03
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059 Command and Scripting Interpreter T1566.001 Spearphishing Attachment

The file is a malicious Office document containing VBA macros. The 'Document_Open' macro is present and uses 'CreateObject', indicating an attempt to execute code. ClamAV detection confirms this as 'Doc.Downloader.Amphitryon-9778217-0', suggesting it acts as a downloader for further malicious payloads. The obfuscated VBA script is too complex to determine the exact download URL or execution method.

Heuristics 6

  • ClamAV: Doc.Downloader.Amphitryon-9778217-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Amphitryon-9778217-0
  • 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.
  • 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
ceb2cd1feb993343b43c1a562f1511ffad0916ca06ac60b4283e0a65886cd4c5		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10625 bytes

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