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

Static analysis result for SHA-256 f4891094d6623dad…

MALICIOUS

Office (OLE) / .XLS

170.0 KB Created: 2021-08-17 12:24:08 Authoring application: Microsoft Excel
MD5: b1afd6e239c1d044210dc3fbd134d51a SHA-1: a6cfea0e7903846529aacd6f55002af4b9458feb SHA-256: f4891094d6623dadbf84486b85a29b4bd0badf28ee100bc0e44c550715614e62
122 Risk Score

Malware Insights

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

The sample is an Excel spreadsheet containing VBA macros. The 'SE_ENABLE_LURE' heuristic indicates the document likely prompts the user to enable macros. The 'Auto_Open' macro utilizes the 'ScriptControl' object, which is associated with CVE-2015-0097, to execute code. The script adds code to the ScriptControl object using the value of the 'Title' built-in document property, which is likely malicious.

Heuristics 5

  • MSScriptControl.ScriptControl — CVE-2015-0097 high CVE likely CVE_2015_0097_SC
    MSScriptControl.ScriptControl — CVE-2015-0097
  • 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
c5b27ae94e08564e865ba50cddfc76a6a9e2536146851a8b85b6e38e5bc1eef3		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1202 bytes

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