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

Static analysis result for SHA-256 043e784bb77e64b5…

MALICIOUS

Office (OLE) / .DOCX

160.4 KB Created: 2020-09-23 12:48:00 Authoring application: Microsoft Office Word
MD5: e6d15383ee51dde6c78ab1828224e2a0 SHA-1: aa48b792587d6ee16053d7175a702fae61d95c94 SHA-256: 043e784bb77e64b58ffbee762edc43a23422b9400cf0dbfe1287a4074ce64e7a
202 Risk Score

Malware Insights

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

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for malware delivery. The critical ClamAV detection and high-severity heuristics for CreateObject and p-code execution strongly indicate malicious intent. The VBA script appears to be heavily obfuscated but its structure suggests it is designed to download and execute a secondary payload.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9765533-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9765533-0
  • 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
b40b6439e0e94acfcf6292a727f89f3b7b0e2a6faeddd230541e1164d0603753		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19346 bytes

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