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

Static analysis result for SHA-256 5f31da31a925d5ed…

MALICIOUS

Office (OLE) / .DOC

152.6 KB Created: 2020-09-14 17:52:00 Authoring application: Microsoft Office Word
MD5: 13364c3bd5dc051fbf8d53b413c2a845 SHA-1: edce22661631b0a62d3abd1c2d9d2f600cf58f3b SHA-256: 5f31da31a925d5eddfcd8a434b8adb8329c95b9ef397d6d4b0c3cf33c44787a6
202 Risk Score

Malware Insights

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

The sample is a malicious Office document containing VBA macros. The 'Document_Open' macro is present and uses 'CreateObject', indicating an attempt to execute code. The ClamAV detection 'Doc.Malware.Generic-9760287-0' further confirms its malicious nature. The VBA code appears obfuscated, but the presence of auto-execution macros strongly suggests it's designed to download and run a second-stage payload.

Heuristics 6

  • ClamAV: Doc.Malware.Generic-9760287-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Generic-9760287-0
  • 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
1c1ac6d8019d3317e1fd9360b916f40afe347161c1d653ef40242d0284d5107c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18510 bytes

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