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

Static analysis result for SHA-256 de5ff2a86b9b9782…

MALICIOUS

Office (OLE) / .DOCX

152.1 KB Created: 2020-09-14 18:36:00 Authoring application: Microsoft Office Word
MD5: 4382ed1561fa35d4e5b0c37e4881fda9 SHA-1: e899a0967fb565301bed76aef7b8cde2c91c2dcb SHA-256: de5ff2a86b9b97821a627ee23d91fecfc32dcb3d5db129604ca5c47f4feb102b
300 Risk Score

Heuristics 8

  • 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.Malware.Generic-9760286-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Generic-9760286-0
  • 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.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
1292a632e7e589fe2af40be48c7cc33bf98b796b982d17887300d79315ad06a4
vba-macro oletools.olevba.extract_macros (decoded VBA source) 18499 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.