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

Static analysis result for SHA-256 1340d8450093c4b1…

MALICIOUS

Office (OLE) / .DOCX

175.5 KB Created: 2020-09-28 21:56:00 Authoring application: Microsoft Office Word
MD5: ca0f2c7d2b0503bfe2d330483af927c2 SHA-1: 1898e55b3dd1d5f4bcd2a9abd433a4c362de86cb SHA-256: 1340d8450093c4b10ffd24cd42262a4c1115b9f6e0a8a7c0bc184f9973cf8b6b
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is a malicious Office document containing a VBA macro. The macro utilizes a Document_Open auto-execution function and a CreateObject call, indicative of malicious intent. The script appears to be heavily obfuscated, but its primary function is likely to download and execute a second-stage payload, as suggested by the use of CreateObject and the embedded URL. The document body's content is largely unreadable, but the presence of VBA macros and the ClamAV detection strongly indicate malicious activity.

Heuristics 6

  • ClamAV: Doc.Malware.Generic-9769001-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Generic-9769001-0
  • 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
fe19635e7383e285d173bce1f5bbd9867258f7974e3830e10aecb187a337391c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6691 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.