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

Static analysis result for SHA-256 016ee663cf0779e7…

MALICIOUS

Office (OLE) / .DOCX

178.5 KB Created: 2020-10-22 15:17:00 Authoring application: Microsoft Office Word
MD5: 592c081fd6ba05c78177e5e4a2a2c583 SHA-1: 1c515593080c4ffc973bd69ec92d820eb292b579 SHA-256: 016ee663cf0779e773c6fb5644bf4f69f509afe3733132a014cc9fb1c777dcdf
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

The sample is a malicious DOCX file containing a VBA macro. The macro is triggered by the Document_Open event and uses CreateObject to execute code. The macro appears to be designed to download and execute a second-stage payload, as indicated by the ClamAV detection name 'Doc.Downloader.Logan-9781905-0'. The obfuscated script content and the presence of a downloader heuristic strongly suggest this malicious behavior.

Heuristics 6

  • ClamAV: Doc.Downloader.Logan-9781905-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Logan-9781905-0
  • 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
cecccb4a1113767f9883636c8aa1a2de57ced4949da2d8bcaf50534e5e598b34		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18857 bytes

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