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

Static analysis result for SHA-256 05ee1c659e9fbb35…

MALICIOUS

Office (OLE) / .DOC

162.4 KB Created: 2020-09-17 22:39:00 Authoring application: Microsoft Office Word
MD5: 1e32a51e7f36f3804b5a4cee93c117d7 SHA-1: c8d78f3161a22d874d57b1b1f858e418143f421d SHA-256: 05ee1c659e9fbb35e6f3082eafe097236fd3f8de8e6fd89be872a8343039fa8a
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample contains a VBA macro that is automatically executed via the Document_open subroutine. This macro utilizes CreateObject, a common technique for initiating malicious actions. The ClamAV detection 'Doc.Downloader.Generic' strongly suggests the macro's purpose is to download and execute a second-stage payload. No specific family could be identified, but the behavior is consistent with a downloader.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9763145-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9763145-0
  • 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
1e2a7d06314ac88dde2877d244d6ca5e91533ec592ad1318aa4aab91c451ca9e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 21979 bytes

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