Amphitryon — Office (OLE) malware analysis

Static analysis result for SHA-256 63a12d5fc1be102c…

MALICIOUS

Office (OLE)

141.8 KB Created: 2020-10-15 11:18:00 Authoring application: Microsoft Office Word
MD5: faaab171bedd5b4110b2a1456a873513 SHA-1: a462a70d3f0162cf70c08f542f315a5d3abf1b25 SHA-256: 63a12d5fc1be102cc43155a0bddbaa57e075b647224c268cde1d288d6db2a4cc
202 Risk Score

Malware Insights

Amphitryon · confidence 95%

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

The file is identified as malicious by ClamAV with the signature Doc.Downloader.Amphitryon-9778217-0. Static analysis reveals the presence of VBA macros, specifically a Document_Open macro that utilizes CreateObject. This indicates the macro is designed to execute arbitrary code, likely downloading and executing a secondary payload. The obfuscated nature of the VBA code and the heuristic firings strongly suggest a downloader or dropper functionality.

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

Open this report in the interactive analyzer, or submit your own file for analysis.