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

Static analysis result for SHA-256 2a028fa5ab6d0615…

MALICIOUS

Office (OLE) / .XLSX

879.0 KB Created: 2021-05-19 13:36:02 Authoring application: Microsoft Excel
MD5: c389608ec63d30c2d36486bd7db8668f SHA-1: 92774095c7c635c27750dadd1a5bcaab89741711 SHA-256: 2a028fa5ab6d0615c2d6c33793b39f12bb09ff196e07bf1801d6e7751491d7fc
290 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File

The sample contains VBA macros, specifically a Workbook_Open macro, which utilizes WScript.Shell and CreateObject to execute commands. This strongly suggests the macro is designed to download and execute a second-stage payload from one of the embedded URLs. No document body text was available for analysis, but the script behavior is indicative of a downloader or initial access mechanism.

Heuristics 9

  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • 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://iminnovator.com/index_files/yVoSMJ3GBq7lzW5.php
    • https://lrt.com.pk/9mmQzL8P7.phpB:oE+3MxS
    • https://welcometotheafterdeath.com/pixelmonkey.com.au/saeadventures/wp-includes/Text/Diff/0hDhEI2E.php�
    • https://specs2go.shawalzahid.c��
    • https://standup.canicinteractive.com/vendor/swiftmailer/swiftmailer/lib/classes/SO2vS3SCmo1jil.phpm(alV)VY+
    • https://lojamusic.com.br/lojamusic.com.br/sitebuilder/IWu1s3chQoaXq.phpu$%np
    • https://euro-office.net/AwI3uwiwuU6.phpL.XDz%q5zL.XDz%q5zL.XDz%q5z
    • https://staging.gaiafacturacion.com/produccion/v4/include/lib/phpqrcode/cache/rzkNuqp6m1hoY.php07#E=HOD8
    • https://welcometotheafterdeath.com/pixelmonkey.com.au/saeadventures/wp-includes/Text/Diff/0hDhEI2E.php
    • https://specs2go.shawalzahid.com/wp-includes/sodium_compat/src/Core/Base64/gRC1QXli.php)+_exJSNmm
    • https://towingnow.ca/LvR2HWHdQ.phpWH+oj
    • https://abdul.yousufbaloch.com/C1q5m9Q5DWZJ24d.php4U3V7x
    • https://specs2go.shawalzahid.c����

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
f4e56ba5d02a5bfd296498c0b1da9dea41c5413f5b2add4eaf40f951302825ef		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1064955 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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