Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 66ff020fb95ced4f…

MALICIOUS

Office (OLE)

152.7 KB Created: 2020-09-15 09:11:00 Authoring application: Microsoft Office Word
MD5: 515a9bf910d1fc47fb271a0bbce217ea SHA-1: 29c0d17ffdbe6e42d641c8ce9f3e749622690a6b SHA-256: 66ff020fb95ced4f2653e4ecdff764a34d92c4e883e306f037fb46b470b5fbab
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.Dropper.Emotet-9761056-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Emotet-9761056-0
  • 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
b4e7e6a496a33a5d51b25c403e1165bdc88602f70d8eedc62b6d635ba4d9d28a
vba-macro oletools.olevba.extract_macros (decoded VBA source) 22614 bytes