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

Static analysis result for SHA-256 3a37a98def9af84d…

MALICIOUS

Office (OLE) / .XLS

151.0 KB Created: 2003-12-12 16:09:51 Authoring application: Microsoft Excel
MD5: 1c983cb73c040dd26c83b1eec8c32734 SHA-1: b7b57335a1f6480f2333e41d292b43a5c55c01cb SHA-256: 3a37a98def9af84d5c0be6f656dbb76282c4e89831d7532df960b03754d6ba9f
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1059.001 PowerShell T1204.002 Malicious File

The sample is an Excel file containing VBA macros, specifically a Workbook_Open auto-execution macro. This macro utilizes a CreateObject call, indicating it's designed to execute arbitrary code. While the document body appears to be a price list, the presence of the Workbook_Open macro and the CreateObject call strongly suggests malicious intent, likely to download and execute a second-stage payload. No specific family could be identified, and the extracted URLs were benign.

Heuristics 6

  • 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
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ocsp.verisign.com0
    • https://www.verisign.com/rpa
    • https://www.verisign.com/rpa01
    • http://crl.verisign.com/pca3.crl0
    • http://CSC3-2004-crl.verisign.com/CSC3-2004.crl0D
    • https://www.verisign.com/rpa0
    • http://CSC3-2004-aia.verisign.com/CSC3-2004-aia.cer0

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
6d471dcf1fb7872e5c38ffe9ca87a2078a84b9f7fb2502d0b0184031ecb45d00		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 35578 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

Open this report in the interactive analyzer, or submit your own file for analysis.