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

Static analysis result for SHA-256 304045e1ed894215…

MALICIOUS

Office (OLE) / .XLSX

142.0 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel
MD5: d249ce6314b138e02b95bcd90880c2b7 SHA-1: 7e92b6deee521ecc8080c88d6aba3ed6d246a76f SHA-256: 304045e1ed894215e81ba41614cd0e14e464732ede8a6c625194ee2589c6e9a3
280 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1059.005 Visual Basic T1204.002 Malicious File T1036.005 Match Legitimate Name or Location

The sample contains VBA macros that trigger on workbook open, indicative of malicious intent. The script attempts to create and execute files, including 'c:\programdata\jledshf.bat' and 'c:\programdata\sduoixo.vbs', and uses Wscript.Shell to run commands. The reconstructed command line includes multiple URLs, suggesting a downloader functionality. The presence of 'CreateObject' and 'Wscript.Shell' firings further supports the execution of external scripts and commands.

Heuristics 7

  • ClamAV: Doc.Malware.Valyria-10004384-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Valyria-10004384-0
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
527d0656a0c2c323955d068683ef8f7e20c035cda247a1e24383595c0eb3403b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 7821 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.