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

Static analysis result for SHA-256 995cc400362eaa95…

MALICIOUS

Office (OLE) / .XLS

468.0 KB Created: 2021-05-25 13:23:06 Authoring application: Microsoft Excel
MD5: 662ed1aced50cad399d305467f290fea SHA-1: 59b1bb6143562fbf14663ee4fb2a6cde5febeb6f SHA-256: 995cc400362eaa95d528dffef31bb08e173f2cabb8b5fb0e02f2134388800c48
330 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell

The sample is an XLS file containing VBA macros, with a Workbook_Open auto-execution macro. Heuristics indicate the use of WScript.Shell and CreateObject, suggesting the script attempts to execute commands or launch external processes. The presence of embedded URLs points to a likely downloader or droppper functionality, aiming to fetch and execute a secondary payload.

Heuristics 10

  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • 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://bonsaisupreme.com/old-data/wp-includes/js/tinymce/langs/I0UM7jBKmZmJB.php
    • https://gettingreadytolearn.co.�*
    • https://tsc-somali.com/wordpress/wp-includes/sodium_compat/src/Core/FO8NNRuR.phpka;t_yu1
    • https://661partyrentals.com/wp-content/plugiG����f
    • https://ms-onlinestore.com/wp-content/plugins/edgtf-membership/widgets/l|2-�AP
    • https://app6.salesdatagenerator.com/wp-conten��R;x.��3�H��7@+�q�z
    • https://getitsolutions.in/lib/boot�1������
    • https://afemnor.es/wp-content/themes/dt-the7���H�h�d�
    • https://urbanvibeN�UK�!t��.�
    • https://gettingreadytolearn.co.uk/portal/wall/posts/157/thumbs/BeAsmBuB.phphY$nIhY$nIhY$nIhY$nI
    • https://661partyrentals.com/wp-content/plugins/ultimate-member/templates/email/UhUsapvuN2huM.phpXW8P*XW8P*XW8P*
    • https://ms-onlinestore.com/wp-content/plugins/edgtf-membership/widgets/login-widget/gTXau9pVJ1hO41.php
    • https://app6.salesdatagenerator.com/wp-content/plugins/wp-all-import-pro/classes/PHPExcel/D09Po1Rg.php
    • https://getitsolutions.in/lib/bootstrap/css/9ddjb7IZFH.php,6(SL
    • https://scgtech.in/beta/wp-includes/js/tinymce/langs/3U1we0dl.phpjzgCT1|wYpWj
    • https://afemnor.es/wp-content/themes/dt-the7/inc/mods/compatibility/elementor/pro/modules/query-contol/FHo2N5GW1hAjyYV.php
    • https://urbanvibegh.com/actioncitychapel.com/wp-includes/js/mediaelement/renderers/qmLclhzeHb.php

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
a92b6145a01f0717cd753ed1f87e8aa9234c4266f168f78fece1e4c2ceb86222
vba-macro oletools.olevba.extract_macros (decoded VBA source) 139470 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.