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

Static analysis result for SHA-256 f337bde513999c80…

MALICIOUS

Office (OLE) / .EXE

38.5 KB Created: 1980-01-05 11:25:12 Authoring application: Microsoft Excel
MD5: d027f2ad5167df2b4cefdfee56b8b203 SHA-1: 29846db49c96a6b9552b747b9cbf062ec11635cc SHA-256: f337bde513999c804944bbc6acb1510153b50273ca9c1c0d6923a4adc26053fe
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1566.001 Spearphishing Attachment

The critical ClamAV detection of 'Xls.Trojan.Laroux-30' and the presence of a high-severity 'Auto_Open' VBA macro strongly indicate malicious intent. The macro is likely designed to download and execute a secondary payload, a common characteristic of the Laroux family. The file's metadata indicates it was authored by Microsoft Excel.

Heuristics 4

  • ClamAV: Xls.Trojan.Laroux-30 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Trojan.Laroux-30
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • 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
459e60a776c04987ec42e6bda7006e68ed80aac5fc88d9ef1dc8087a60db7f6d		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4260 bytes
Detection
ClamAV: Xls.Trojan.Laroux-30
Obfuscation or payload: unlikely

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