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

Static analysis result for SHA-256 3315cc9ca6fecf86…

MALICIOUS

Office (OLE) / .DOCX

150.1 KB Created: 2020-09-24 10:05:00 Authoring application: Microsoft Office Word
MD5: 37c7b2d699bb9f6a26b5e02da7694898 SHA-1: f0413062145ed0cde9882304172dbd08fd7c5254 SHA-256: 3315cc9ca6fecf8628572bff212b1a3d8306dcd377de6f319c8530af1d7f8588
240 Risk Score

Malware Insights

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

The sample contains a Document_Open VBA macro that is triggered upon opening the document. This macro utilizes CreateObject and appears to execute obfuscated code, as indicated by the p-code auto-execution firing. The presence of the ClamAV detection 'Doc.Trojan.Agent-9765752-0' strongly suggests a malicious agent or trojan. The obfuscated nature of the script and the auto-execution mechanism point towards a downloader or initial execution stage for a more complex payload.

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.