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

Static analysis result for SHA-256 e90e3104a90a1e40…

MALICIOUS

Office (OLE) / .DOC

119.0 KB Created: 2024-09-03 14:39:00 Authoring application: Microsoft Office Word
MD5: c39d1bc4872c7be9b48840a30063cec7 SHA-1: 5cd96e547394a1ca60c3940fec9abd5b8023a4c0 SHA-256: e90e3104a90a1e407b82eaeb3f5da46bf02732e02d1ff28a3e9f20a4cbeac4fa
302 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1059.005 Visual Basic

The sample contains VBA macros with an AutoOpen function that triggers a Shell() call. This call references PowerShell, indicating an attempt to execute commands. The presence of a 'macros.bas' file and the 'SC_STR_POWERSHELL' heuristic further support this. The primary intent appears to be downloading and executing a second-stage payload via PowerShell.

Heuristics 8

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • PowerShell reference in VBA critical OLE_VBA_PS
    PowerShell reference in VBA
  • Reference to PowerShell high SC_STR_POWERSHELL
    Reference to PowerShell
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • 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
95c2a11ea2329d520db8c440eafc7d0e8de3a16ff4028ef4924194411d53724a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1414 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 shell/COM execution token(s). Carved artifact contains 2 long base64-like blob(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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