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

Static analysis result for SHA-256 5b22279886f69e5b…

MALICIOUS

Office (OLE) / .DOC

144.0 KB Created: 2021-01-05 07:06:00 Authoring application: Microsoft Office Word
MD5: 651f2a2d8eb721508e61d0f4363fb371 SHA-1: 4432b5c58d324b7dacf81aed4cce7c647224528d SHA-256: 5b22279886f69e5b2444ecef33af0eafe9a2dbd259ce3eb8b034a73cae7ce950
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The file contains a Microsoft Word document with a heavily obfuscated VBA macro that executes upon opening. The macro utilizes `CreateObject("Scripting.FileSystemObject")` to write files to disk, specifically at `adovQEgH:\yaeEJHH\SKFgTIH.RuTWilZ` and `qfunyImH:\QnBtFIBIj\qjvAJ.eseiIfRc`. This indicates the macro's purpose is to download and execute a second-stage payload, likely using PowerShell given the file extension and common obfuscation techniques.

Heuristics 6

  • 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
  • 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
  • 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
d3b097275af7032178b4c001ca8fbb5e7bf0f68c090585141a79334ce9cb0a60		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10798 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.