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

Static analysis result for SHA-256 c772359c2dd61b41…

MALICIOUS

Office (OLE) / .DOC

144.4 KB Created: 2021-01-05 07:06:00 Authoring application: Microsoft Office Word
MD5: 1a5af385cbcae3e14b1cd5a1c698c7dc SHA-1: 76c6532ff6384608476351196e8c91ca86665b60 SHA-256: c772359c2dd61b41718226e30d13a19044799f24fd8f62b3d595d4c5b1bd166a
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1059.001 PowerShell T1566.001 Spearphishing Attachment

The sample contains a malicious VBA macro, specifically a Document_Open auto-execution macro. This macro utilizes CreateObject to execute arbitrary code, likely to download and run a second-stage payload. The obfuscated document body content does not provide further context on the lure, but the presence of the auto-executing macro is a strong indicator of malicious intent.

Heuristics 6

  • 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
d3b097275af7032178b4c001ca8fbb5e7bf0f68c090585141a79334ce9cb0a60		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10798 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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