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

Static analysis result for SHA-256 ea793bae0ca410fd…

MALICIOUS

Office (OLE) / .XLS

219.0 KB Created: 2000-04-13 21:48:14 Authoring application: Microsoft Excel
MD5: 2ca9fe6afe9e879e88d02200a538e800 SHA-1: 3767abef5771f4b917a3e3afbf4b5deb177eba66 SHA-256: ea793bae0ca410fdc008a67c243895c70c55d1204d30c2a853ddb90fff24264a
278 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1059.001 PowerShell T1566.002 Spearphishing Attachment T1140 Deobfuscate/Decode Files or Information

The sample is a macro-enabled Excel file that exhibits characteristics of a downloader. The Workbook_Open macro and CreateObject calls suggest the execution of malicious code upon opening. The presence of an appended payload and numerous suspicious URLs indicates an attempt to download and execute further malicious content, likely for a broader attack.

Heuristics 10

  • OLE document has large unaccounted-for region high OLE_SLACK_ANOMALY
    OLE file is 224,256 bytes but its declared streams total only 110,123 bytes — 114,133 bytes (51%) live in unallocated sector slack. This is the canonical hiding place for pre-macro-era Office exploit payloads (XOR-encoded shellcode reached via a parser pointer-corruption bug in the document structure).
  • 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)
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://cooI��Do2%j(a�}*�;et/wp-content/thr�/���
    • https://steijnborg.mobilitum.com/wp-content/themes/twentytwentyone/template-parts/content/Wjov
    • https://teste.sitiodoastronaut
    • https://steriglass.stigmatinesafrica.org/wp-includes/sodium_compat/namespaced/Core/ChaCha20/KITDlCQHVyI.phpvbYG9o+|#ThN
    • https://consultadom.e-m2.net/wp-content/themes/mondom/visual-composer/elements/twYd7y9xpAo.phpeo%Cb.G-
    • https://tricommanagement.org/fonts/font-awesome-4.7.0/css/zhk1GWedvcwJJJ.php,Fy\Q-O
    • https://steijnborg.mobilitum.com/wp-content/themes/twentytwentyone/template-parts/content/WjovFkpG3.phpiE_@u_%S
    • https://ahdmsport.com/bootstrap/scripts/_notes/Xwi4K0BrmwX6hf.phpg^nyQeTf#
    • https://acr2PT.oopolis.nsmatrix3.com/wp-content/plugins/elementor/data/base/6pgh1Em8u.php
    • https://courieradmin.phebsoft-team.com/svg/ot0fUe27YMmQ.php;^#oJq
    • https://teste.sitiodoastronauta.com.br/wp-includes/js/tinymce/plugins/charmap/M19jooPri8Tq.php.=4aGsw|^xL*scy\

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
3c269138fa677d91d324447245a6d966dcbedd53dc89efaf016602d4d72c1f8f
vba-macro oletools.olevba.extract_macros (decoded VBA source) 16866 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.