Amphitryon — Office (OLE) malware analysis

Static analysis result for SHA-256 00d0f2df2841b9a7…

MALICIOUS

Office (OLE)

140.9 KB Created: 2020-10-15 11:18:00 Authoring application: Microsoft Office Word
MD5: cc561dca7c33e2c6026cabe2cdface05 SHA-1: f42ce090133707ad77558749b99d43793bb9929f SHA-256: 00d0f2df2841b9a79031ab3dc564db99e2caa22c9626842f087b195e3250dc89
202 Risk Score

Malware Insights

Amphitryon · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1059.001 PowerShell T1105 Ingress Tool Transfer

The file contains VBA macros, including a Document_Open auto-execution macro, which is a strong indicator of malicious intent. The script uses CreateObject to likely download and execute a second-stage payload. ClamAV detection confirms this as a downloader, specifically identifying it as Amphitryon.

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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