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

Static analysis result for SHA-256 6736b5bcbed2e8f1…

MALICIOUS

Office (OLE) / .DOCX

164.6 KB Created: 2020-09-14 11:42:00 Authoring application: Microsoft Office Word
MD5: 3d323f2e2218936bae31d20b1f121322 SHA-1: b5dd484ae2d08288b31e26ba719e99cee6bde24a SHA-256: 6736b5bcbed2e8f12da08be771ae16afa0c6ff032434b34afe0375e377cf44df
262 Risk Score

Heuristics 7

  • Hidden UserForm PowerShell EncodedCommand stager critical OLE_USERFORM_OBFUSCATED_POWERSHELL
    OLE document contains a UTF-16LE form/property string with an obfuscated PowerShell -EncodedCommand payload. The observed macro family reconstructs this hidden string with Split/Join or UserForm property reads and launches it through WMI/COM process creation. This is downloader malware, not an Office CVE exploit.
  • ClamAV: Doc.Downloader.Generic-9759992-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9759992-0
  • 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
21906a5a0abde96faec8374301375697a3e8b4bd728c1429248ea92df8224a99
vba-macro oletools.olevba.extract_macros (decoded VBA source) 25189 bytes