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

Static analysis result for SHA-256 8cb2a498e709898a…

MALICIOUS

Office (OLE) / .DOC

545.5 KB Created: 2022-09-14 03:28:00 Authoring application: Microsoft Office Word First seen: 2022-09-14
MD5: 3d208656601ef1b311d9561a318121ee SHA-1: 11749a67a0405415c7922dd91af846bab33529c4 SHA-256: 8cb2a498e709898ab2931affa7602b6cf1f936ba602ab1e122717c6d0f7cf727
242 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File T1071.001 Web Protocols

The sample is a malicious Office document containing a VBA macro that is automatically executed upon opening via the Document_Open subroutine. The macro is obfuscated and uses a Shell() call, indicating it is designed to download and execute a second-stage payload from the URL http://empirevisioninc.xyz/cal/wordpad.exe. The document body explicitly prompts the user to enable macros, a common social engineering tactic.

Heuristics 7

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • 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.
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open 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.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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://empirevisioninc.xyz/cal/wordpad.exe
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
2ce795bb03ffab9f3eb19da559cff00e762dcbdade8b765a753f2fb75deb5ade		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 75274 bytes

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