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

Static analysis result for SHA-256 18bb61d704aea3eb…

MALICIOUS

Office (OLE) / .DOCX

155.4 KB Created: 2020-12-30 18:32:00 Authoring application: Microsoft Office Word
MD5: 060881761125cb38a9db45f7f40fde25 SHA-1: ce7eee73e7951ed7147d2e7fc4903d7d5e5f7ea3 SHA-256: 18bb61d704aea3eb9f1d69649f16dad532c1236486dbb9891c0bf5054c63aa16
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059 Command and Scripting Interpreter

The sample contains VBA macros that are automatically executed upon opening the document, indicated by the 'Document_open' macro and 'OLE_VBA_PCODE_AUTOEXEC_EXEC' heuristic. The script uses 'CreateObject' to interact with the file system, creating temporary files with specific paths. This behavior is characteristic of malware that downloads and executes additional payloads. The ClamAV detection also strongly suggests a downloader variant.

Heuristics 6

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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
e8d3f7d8d02f0b30fe9a4f739a77064bdfd79f1fb249409f6cc7dd9e6c88bf62		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6622 bytes

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