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

Static analysis result for SHA-256 82931dd9ad6626f3…

MALICIOUS

Office (OLE) / .DOCX

157.9 KB Created: 2020-10-19 16:24:00 Authoring application: Microsoft Office Word
MD5: c8122e6d55d56f9e8ef8a66a32b41892 SHA-1: 0e99e3d1e191bc153f39691dc18462d7db0cb47e SHA-256: 82931dd9ad6626f3b82f35386c32d7a314c500e6f65c753be39c937958c832fc
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1203 Exploitation for Client Execution

The sample is a malicious Office document containing a VBA macro. The macro utilizes CreateObject, a common technique for executing arbitrary code, and is triggered by the Document_Open event. This suggests the macro is designed to download and execute a second-stage payload. The ClamAV detection and heuristic firings confirm its malicious nature.

Heuristics 6

  • ClamAV: Doc.Malware.Sagent-9780539-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Sagent-9780539-0
  • 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.
  • 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
d0a6497cb07b10e3700967f3bfacfd7398ab919e1393e4e1ddda61d0b30c3f61		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15475 bytes

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