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

Static analysis result for SHA-256 0858360a76cb8533…

MALICIOUS

Office (OLE) / .DOC

177.0 KB Created: 2021-01-22 14:32:00 Authoring application: Microsoft Office Word
MD5: 4af53ebc80beafd5f2cb8a3cf98ffd7b SHA-1: 5b547d445c0767549b38e6bd62f29c43d85518bc SHA-256: 0858360a76cb8533ddf6a25ed49cc64731e65f8cb93eeb29c89324316389c64c
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains VBA macros, specifically a Document_Open auto-execution macro, which is a strong indicator of malicious intent. The presence of CreateObject calls and p-code execution further supports this. The ClamAV detection 'Doc.Malware.Emodldr-10033991-0' confirms its malicious nature. The macro's obfuscated nature and the truncated script prevent a definitive analysis of its exact payload, but the overall pattern suggests it acts as a downloader.

Heuristics 6

  • ClamAV: Doc.Malware.Emodldr-10033991-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emodldr-10033991-0
  • 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
9604f7238d229777467454a284fc513fb3433ac19cd021a8f1f98a0924057a06
vba-macro oletools.olevba.extract_macros (decoded VBA source) 16816 bytes