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

Static analysis result for SHA-256 fc7879543753b7bc…

MALICIOUS

Office (OLE) / .DOCX

150.6 KB Created: 2020-09-24 10:05:00 Authoring application: Microsoft Office Word
MD5: 09b3d30ac66b03ec1767724d6c420895 SHA-1: 9a7b676ebfab6ac736e38447fd5afbcab3356ec2 SHA-256: fc7879543753b7bcea43eb1a48828da5340206c3787f219a7425d3e9bf2e12dd
240 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1059.005 Visual Basic

The file is a malicious DOCX document containing a VBA macro. The Document_Open macro is configured to execute automatically, utilizing CreateObject to launch a PowerShell command. This PowerShell command is designed to download and execute a second-stage payload, as indicated by the critical ClamAV detection and the presence of the macros.bas file.

Heuristics 7

  • ClamAV: Doc.Trojan.Agent-9765752-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Agent-9765752-0
  • 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
b39e572cf96864edb4f5c39daa3a8388f74111156690860ca53002be67bbf3ff		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20583 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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