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

Static analysis result for SHA-256 3afac9ffd706efde…

MALICIOUS

Office (OLE) / .DOC

387.5 KB Created: 2021-04-27 22:59:00 Authoring application: Microsoft Office Word
MD5: 0ae873d0a1f0a4e5785d64ca649406c5 SHA-1: 249c92c3d8408e55ece33908553f0cc2061d8a49 SHA-256: 3afac9ffd706efde8a68fbe78653b97fa5b5f2d815e00e05a4dd26cc3ceb9d64
220 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample contains VBA macros, specifically a Document_Open macro that uses CreateObject to execute code. This macro likely downloads and executes a second-stage payload from the URL http://scaladevelopments.scaladevco.com/13Z/IMG_001263082.ex. The presence of Windows Script Host references further supports the execution of external scripts.

Heuristics 7

  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • 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.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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://scaladevelopments.scaladevco.com/13Z/IMG_001263082.ex
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
a0f52d6c5899b3d8bbe65b7069d6728a42a895b07acb04b427cdbd9b7375ccf2		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 924 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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