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

Static analysis result for SHA-256 1f6ac303166c0b45…

MALICIOUS

Office (OLE) / .XLS

620.5 KB Created: 2021-05-26 12:11:04 Authoring application: Microsoft Excel
MD5: e05ff6ab3d009358d7b22842eaba17be SHA-1: ae815605e3e4571f616e6168b7f7e08ed498e293 SHA-256: 1f6ac303166c0b4566cb04e6c834fe35ed62479f733bbe6986c102aefe1f2ddd
270 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.002 Spearphishing Attachment T1140 Deobfuscate or Obfuscate

The presence of a Workbook_Open macro, along with a CreateObject call and a reference to WScript, strongly indicates malicious VBA execution. The macro likely attempts to download and execute a secondary payload from one of the embedded URLs. The file also contains an appended executable-looking payload, further supporting its malicious nature.

Heuristics 9

  • 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://menuiserie-lemoine.bzh/wp-co;i29va|ntent/themes/twentynineteen/templ�Zz��6
    • https://aspiloselaia.cfserver3.net/wp-content/pluginste6k\z^/polte6k\z^ylang/js/build/ek%��
    • https://organi0==N1%6grama.gualda.com/wp-c0==N1%*OX2G��m-L=o�E3alugins/codepressw����i&f�����xs��
    • https://menuiserie-lemoine.bzh/wp-co;i29va|ntent/themes/twentynineteen/template-parts/content/x0XxE;i29va|HWGdeyPBEj.php
    • https://kweralmJ*Li:Qtd.com/wp-content/plugmJ*Li:Qins/woomJ*Li:Qcommerce-delmJ*Li:Qivery-notmJ*Li:Qes/mJ*Li:Qincludes/component/u63R84hM.php
    • https://surustore.com/image/caDlSa&8che/catalogDlSa&8/dDlSa&8emo/baDlSa&8DlSa&8nnersDlSa&8/h0dD8T2aNRz.php
    • https://aspiloselaia.cfserver3.net/wp-content/pluginste6k\z^/polte6k\z^ylang/js/build/ek117gBgoNad.php
    • https://organi0==N1%6grama.gualda.com/wp-c0==N1%6ont0==N1%6ent/plugins/codepress-ad0==N1%6min-columns/classes/Admin/Wl8gnvHwQ7z.php
    • https://brandsites.gunwebhosting.com.au/site/wp-includes/Text/Diff/Engine/eUhebviBF4O7&.TSOzDZ.php
    • https://prEYf&h66ediction2020.EYf&h66com/wp-content/plugEYf&h66ins/reEYf&h66ally-simple-ssl/testssl/cloudflare/jDN6wmFidG65.php
    • https://adegt.com/wp-includes/sodiumVGnFz$5_compat/namespaced/CorVGnFz$5eVGnFz$5/ChaChaVGnFz$520/eDKgoiZov82FT.php
    • https://enlazador.bc.8_!com.es/wp-content/themesbc.8_!/twentynineteen/sass/blocks/mLrfH3gL5MqmI.php

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
4ecda3d6a5c2b988fcf3be64c5c4bf4fc3fdce3d7508dae0fd24b9245fc375b5
vba-macro oletools.olevba.extract_macros (decoded VBA source) 137783 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.