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

Static analysis result for SHA-256 1665cb9b35360512…

MALICIOUS

Office (OLE) / .DOCX

151.6 KB Created: 2020-09-24 10:05:00 Authoring application: Microsoft Office Word
MD5: 05ba435cfeacf1d5c283e5501fa8eb24 SHA-1: faefa51aa7495b318b80fc7062c1603bed59f11b SHA-256: 1665cb9b353605125840c136e4d1279f636adeb50027bcd91a86cb7bfea42e77
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 initiating malicious actions. The macro uses CreateObject and obfuscated code, suggesting an attempt to download and execute a second-stage payload, potentially PowerShell. The ClamAV detection 'Doc.Trojan.Agent-9765752-0' further supports its malicious nature.

Heuristics 6

  • ClamAV: Doc.Trojan.Agent-9765752-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Agent-9765752-0
  • 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
b39e572cf96864edb4f5c39daa3a8388f74111156690860ca53002be67bbf3ff		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20583 bytes

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