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

Static analysis result for SHA-256 f2c90ffe3562335f…

MALICIOUS

Office (OLE) / .XLS

270.0 KB Created: 2021-08-17 12:24:08 Authoring application: Microsoft Excel
MD5: 96417179582f29ed95c5719e60203d61 SHA-1: 5e7781903f5a0c67318db9edccc60e5c8071a73e SHA-256: f2c90ffe3562335fab9532003e43d4911b8e42f34e3d693ba82703311dc133d2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The file is an Excel spreadsheet containing VBA macros, specifically an Auto_Open macro. This macro utilizes the ScriptControl object and executes code embedded within the document's 'Subject' and 'Comments' properties. This is a common technique for downloading and executing a second-stage payload. The presence of an 'enable macros' lure further supports this malicious intent. No specific family could be identified.

Heuristics 4

  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • 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/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/photoshop/1.0/
    • http://ns.adobe.com/tiff/1.0/
    • http://ns.adobe.com/exif/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
0278d22c57457c6ea65486c5e13f4b06bae683e9ef9fa360c905d1932da96848		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 862 bytes

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