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

Static analysis result for SHA-256 1416fbb0d1f2c204…

MALICIOUS

Office (OLE) / .DOCX

173.4 KB Created: 2020-09-17 10:17:00 Authoring application: Microsoft Office Word
MD5: f0d90fd5366c0651ece248370d8a1ef7 SHA-1: 5ea84afd00380375eb60bb618023bf34653ba290 SHA-256: 1416fbb0d1f2c204801a510618e8135a3d21a605d397a155e41f4d9d242aa9d9
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1140 Deobfuscate or Obfuscate Malicious Code

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for initiating malicious actions upon opening the document. The script utilizes CreateObject, indicating an attempt to execute code or interact with system objects. The ClamAV detection as 'Doc.Downloader.Generic' strongly suggests the macro's purpose is to download and execute a secondary payload.

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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