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

Static analysis result for SHA-256 70c385a746be7d0d…

MALICIOUS

Office (OLE) / .DOC

68.0 KB Created: 2021-09-10 10:26:00 Authoring application: Microsoft Office Word
MD5: fe5313fb2e3df6a59003db45a97309a3 SHA-1: 12cf7a4a0ed6d39dca8d529ce4cfc2894be5da1f SHA-256: 70c385a746be7d0dd26994f2e84a2f502091685b83e41ece9e8adf5c44f5552c
182 Risk Score

Malware Insights

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

The sample contains VBA macros, including a Document_Open macro that executes a shell command. This command appears to be designed to download and execute a second-stage payload from a location constructed from the document's body text. The heuristic firings indicate a lure to enable macros and the execution of a shell command, supporting the conclusion of a malicious document dropper.

Heuristics 6

  • ClamAV: Doc.Malware.Valyria-10009252-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Valyria-10009252-0
  • 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://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/photoshop/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://ns.adobe.com/tiff/1.0/
    • http://ns.adobe.com/exif/1.0/
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
626c2d10ca3f3a73a239775dec2445a704f945303cd084ee575b0c5ad5ca4023		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 707 bytes

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