Xls.Dropper.Agent-7688357-0 — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 cb560e9b2f1f2900…

MALICIOUS

Office (OLE) / .XLS

60.5 KB Created: 2020-04-24 06:37:02 Authoring application: Microsoft Excel
MD5: 609a2aee728e5f4d075e6c984df9680b SHA-1: 67f101a89b2af606981ded8b2073f328e0355c5f SHA-256: cb560e9b2f1f29007a1ad95b4ad3df3398e8d3a8498c1c139357490dbc670db4
120 Risk Score

Malware Insights

Xls.Dropper.Agent-7688357-0 · confidence 95%

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

The file is identified as an encrypted Excel 4.0 macro sheet by multiple heuristics, including a critical ClamAV detection for 'Xls.Dropper.Agent-7688357-0'. The presence of encrypted macros indicates a deliberate attempt to obfuscate malicious code execution. The primary function appears to be acting as a dropper for further malicious activity.

Heuristics 3

  • ClamAV: Xls.Dropper.Agent-7688357-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Dropper.Agent-7688357-0
  • Encrypted Excel 4.0 macro sheet high OLE_XLM_ENCRYPTED_MACROSHEET
    Workbook contains an Excel 4.0 macro sheet and BIFF FILEPASS encryption. Password-protected XLM macro sheets, especially the default Excel password path, are a common malware evasion pattern because static formula extraction may fail until the workbook is decrypted.
  • Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPEN
    Workbook contains an Excel 4.0 macro sheet sub-stream — XLM is rarely seen in modern legitimate workbooks and was a major Office malware vector during 2020-2022.