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

Static analysis result for SHA-256 56f8f93fdb55dff0…

MALICIOUS

Office (OLE) / .DOCX

175.9 KB Created: 2020-09-28 12:01:00 Authoring application: Microsoft Office Word
MD5: 64ef2c17e3fc3e7f57497dd4d467d9a2 SHA-1: 49f3008d4d5e44fd7af790ff9e23a2a08e93741c SHA-256: 56f8f93fdb55dff01517ed53129ee032f07eb126443aa239d1f7789aa899e194
240 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File T1059.001 PowerShell

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for initiating malicious activity upon document opening. The critical ClamAV detection indicates this is a known downloader. The presence of a VBA auto-exec macro that uses CreateObject strongly suggests the script is designed to download and execute a second-stage payload from a remote source.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9768640-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9768640-0
  • 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
41d5da1c3b5ac37936783dc0f6deb9a466b44f4833e7f3cfb69b25cedc4e48ca
vba-macro oletools.olevba.extract_macros (decoded VBA source) 6262 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.