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

Static analysis result for SHA-256 c14a6e9a7632cd39…

MALICIOUS

Office (OLE) / .DOC

47.5 KB Created: 2024-12-04 15:46:00 Authoring application: Microsoft Office Word
MD5: bac28e6a77c77ce457e4dd46ca5f0aa7 SHA-1: 70820cbb05d2910b0674ee5f01966ac104ee2760 SHA-256: c14a6e9a7632cd3936d74adeb656b0d3147ec5233cc01c59a1e4bbd0e4d49b41
340 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File

The sample is a malicious OLE document containing VBA macros. The Document_Open macro is present and utilizes Shell() and WScript.Shell, indicating it attempts to execute commands or scripts. The document body's Spanish text prompts the user to 'Enable content to display this transaction receipt', suggesting a social engineering lure. The primary IOC is the embedded VBA macro file, 'macros.bas'.

Heuristics 9

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • 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://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
97e3e51bc44e10e251c000eb21b2f3ae9fee8b9af29f832bc9c13c1e370b9ad4		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 13136 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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