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

Static analysis result for SHA-256 6274d6fc5f58fb23…

MALICIOUS

Office (OLE) / .DOCX

172.0 KB Created: 2020-09-17 10:17:00 Authoring application: Microsoft Office Word
MD5: ee541bf348c6f6692b5929ebe770f12b SHA-1: 4eacdd35c69b655fbde82988d7b6e1329d4849b3 SHA-256: 6274d6fc5f58fb23f021e998ce3ba08addb461bc1403267302e7e7a2abc376d4
202 Risk Score

Malware Insights

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

The sample contains a Document_Open VBA macro that utilizes CreateObject, indicating an attempt to execute code. The macro appears to be obfuscated, but its presence and the 'Doc.Downloader' ClamAV detection strongly suggest it is designed to download and execute a secondary payload. The embedded URL is benign, but the overall behavior points to a downloader. The use of a macro in a document is characteristic of a spearphishing attachment.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9762674-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9762674-0
  • 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
9ba8ec3966e91d175acafd30ec3438df19c84a3d5c19c35fd5e40d1b639faa28		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20635 bytes

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