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

Static analysis result for SHA-256 a6a2cc6d2d1e9340…

MALICIOUS

Office (OLE) / .DOCX

150.9 KB Created: 2020-09-24 10:05:00 Authoring application: Microsoft Office Word
MD5: 13843b5e73dfc292447615c48a5ea112 SHA-1: a56c39fa2ec030651ebc3631c497f0ea9d0efe03 SHA-256: a6a2cc6d2d1e9340181c5871b0900a88187a6290363210efa3197d0c024d9821
240 Risk Score

Malware Insights

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

The file is a malicious Office document containing a VBA macro. The macro is triggered by the Document_Open event and uses CreateObject to execute a PowerShell command. The obfuscated document body text appears to be a string of PowerShell commands. The presence of the 'macros.bas' artifact and the critical ClamAV detection further support its malicious nature.

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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