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

Static analysis result for SHA-256 7eaf0df9dd2a33ee…

MALICIOUS

Office (OLE) / .DOC

184.0 KB Created: 2020-10-22 06:54:00 Authoring application: Microsoft Office Word
MD5: aefcaade6c3d761073d8ccc29ff6cd26 SHA-1: 5d8406954992df2aabe3a7fff2138213fec54abc SHA-256: 7eaf0df9dd2a33ee958384a9472366f58f1c0a204360efea6a7f8b0d298560d0
202 Risk Score

Malware Insights

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

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for initiating malicious actions upon opening. Heuristics indicate the use of CreateObject, suggesting the execution of code to download and run further payloads. The ClamAV detection name 'Doc.Downloader' strongly supports this conclusion. The obfuscated nature of the VBA script prevents a more detailed analysis of its specific actions.

Heuristics 6

  • ClamAV: Doc.Downloader.Logan-9781905-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Logan-9781905-0
  • 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
9979b97c308d841b566985c48e8a84b999556c3e27641c5af6c36c44f3b0664e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18953 bytes

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