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

Static analysis result for SHA-256 35f32786d4cef037…

MALICIOUS

Office (OLE) / .XLSX

788.0 KB Created: 2021-06-14 10:44:34 Authoring application: Microsoft Excel
MD5: d65c8d73d13ed5d4f2973631101c4b34 SHA-1: 7edc23db25c3773cae51b2f94affdd1cbc2fcdfc SHA-256: 35f32786d4cef03729a8702bee05910c8cb7682cf6b2370f911d437ad0df1644
290 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1566.002 Spearphishing Attachment

The sample is an Excel file containing a Workbook_Open VBA macro that utilizes WScript.Shell and CreateObject to execute commands. This macro is designed to download and execute a second-stage payload from one of the embedded URLs. The presence of an appended OLE payload further indicates malicious intent.

Heuristics 9

  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • OLE file has appended executable-looking payload bytes high OLE_APPENDED_PAYLOAD
    OLE compound file contains a large high-entropy region beyond the declared major streams and that region includes shellcode, PE, or loader API markers. This is a payload-carrier signal, not a specific CVE attribution by itself.
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_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
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — context-specific rules above attribute URLs they actually evaluated; this rule lists URLs that were present in the bytes but were not otherwise tied to a specific finding.
    URL https://goodie������HX�����^
    • https://mobile3&k�X���|��h[-�SN�O���f�%[\j���r���b
    • https://ptti.dexsandbox.com/w�O
    • https://zankzakartig
    • https://event.cyberwoodz.site/wp-includes/js/tinymce/plugins/charmap/sWefpNQap.phpUYNqMfa&cENQ
    • https://goodiesmariage.e-m2.net/wp-contenp.\!Jrt/themes/a-one/woocommerce/global/pV8mYVETWrj.php
    • https://dev1.naturalgraphic.hu/wp-content/plugins/contact-form-7/includes/css/AelYw0GmG44Zz.php4\Y$3Yb&\
    • https://mobile-landing.ishr.co.in/wp-content/pEK!=qlugins/widgetkit-for-elementor/vendor/appsero/4vab4JkBLp.php
    • https://ptti.dexsandbox.com/wp-content/plugins/all-in-one-wp-migration-unlimited-extension/lib/controller/1I68ugOo4iMen.php0.L8;cCAx59:96U2
    • https://zankzakartigosesportivos.com.br/loja/wp-includes/SimplePie/Content/Type/3sLExhiYtVuTS.php5cxg
    • https://indusautomobile.com/products/products_files/cyHU7pVS.php3
    • https://highend.pk/wp-content/plugins/goodlayers-core-twitter/twitteroauth/src/cCNoEJ4wXkpJ.phpi%M2M!f

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
fdf1639ad8ab2c0146910f6c4b7712c48b5942b3a045b37c9429e0505a550ecc		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 116688 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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