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

Static analysis result for SHA-256 2827d500fc99aa59…

MALICIOUS

Office (OLE) / .DOCX

232.5 KB Created: 2025-12-04 09:36:00 Authoring application: Microsoft Office Word First seen: 2025-12-14
MD5: e12c5930a86db4dd63bd8c6982fe4412 SHA-1: 9e28ff665f7ff5dce50986fe428328a8b2566b91 SHA-256: 2827d500fc99aa59fc35846d4d0949a383c55e529729bb4bca319a89545762e1
310 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1566.001 Spearphishing Attachment

The sample contains obfuscated VBA macros, including an AutoOpen macro, which are designed to execute malicious code. Heuristics indicate the use of WScript.Shell and CreateObject, suggesting the macros likely download and execute a second-stage payload from the embedded URL http://137.32.34.67/NiteDecrypt.AES256_CBC_NOPAD_NO_IV_Keydecrypt(Array(((59. The document body's repetitive plea for employment is likely a lure to distract the user while the malicious macros execute.

Heuristics 9

  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • Obfuscated auto-exec VBA loader critical OLE_VBA_OBFUSCATED_AUTOEXEC_LOADER
    Auto-exec VBA reconstructs strings with a heavy custom decoder (numeric char-array, repeated hex-string decode, or junk-token Replace removal) and feeds them to a COM-instantiation or execution sink. This obfuscated-loader shape keeps CreateObject/Shell/URL indicators out of the macro source.
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen 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
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
  • 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://137.32.34.67/NiteDecrypt.AES256_CBC_NOPAD_NO_IV_Keydecrypt(Array(((59
    • http://schemas.openxmlformats.org/drawingml/2006/main
    • https://example.com/vdySPCEKzGniHf(Array(235,(31

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
134a27f60089617a6ddf9275537ddf953077ebe25fdb95d401063b44e23ebcdc		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 266188 bytes

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