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

Static analysis result for SHA-256 989f28e0bd35aa90…

MALICIOUS

Office (OLE) / .DOC

199.3 KB Created: 2020-09-21 06:43:00 Authoring application: Microsoft Office Word
MD5: 9333538d708522dd6cc7c292c20a99c6 SHA-1: e2a903f773763bf962023c738f2dd86cedfaaea3 SHA-256: 989f28e0bd35aa908f4f69460329edd40d30f0d0aa2f3c9c8ab80de930cef8c5
280 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1105 Ingress Tool Transfer

The file is a malicious OLE document containing VBA macros. The 'Document_Open' macro is configured to execute automatically upon opening the document. Heuristics indicate the use of 'CreateObject' and 'GetObject' calls, common for downloading and executing payloads. ClamAV identified this as a downloader. No specific family could be identified, but the behavior suggests a downloader attempting to fetch and run a second-stage artifact.

Heuristics 8

  • ClamAV: Doc.Downloader.Generic-9764468-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9764468-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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
7169cbbf5de322d778ca9a77dc58bcf8bb22a6f6d4bfec64dbfa06bc63509b99		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19229 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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