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

Static analysis result for SHA-256 6e992b163322df62…

MALICIOUS

Office (OLE) / .DOCX

258.8 KB Created: 2020-10-29 09:30:00 Authoring application: Microsoft Office Word
MD5: 4d2804e61d1bcf40874e8181a926c440 SHA-1: 13c71f9a0a1b2fd1f501c64c4d2718741df3d9cd SHA-256: 6e992b163322df62793d0be6d3352fd31697d2e040bd8997df4f954ae3537494
202 Risk Score

Malware Insights

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

The file contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for malware delivery. The script attempts to obfuscate its actions by concatenating strings and using random functions, but the presence of CreateObject and the overall structure strongly suggest it's designed to download and execute a second-stage payload. The ClamAV detection further confirms its malicious nature.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9785156-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9785156-0
  • 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
2c8aded1cc33908777d3554a19067d8f93ed6d8269cc13dcdcff33eca45ebd5f		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18919 bytes

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