Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 ebd1946e468dde65…

MALICIOUS

Office (OLE)

29.5 KB Authoring application: Microsoft Excel First seen: 2012-06-14
MD5: 928e9209145260675af1186d1e29004d SHA-1: 915b250dfc2324f64ac11fc939fd67719d7cdb75 SHA-256: ebd1946e468dde65fc36b544aa52d00e751703b9817335646bdd48bc58bbf5fe
120 Risk Score

Malware Insights

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

The file is identified as a malicious Excel 5 macro virus, specifically the Laroux family, based on critical heuristic firings. This type of malware typically executes malicious VBA code upon opening, often used for downloading further payloads or establishing persistence. The presence of macro virus markers strongly suggests an attempt to exploit older Excel vulnerabilities.

Heuristics 2

  • ClamAV: Legacy.Trojan.Agent-483 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Legacy.Trojan.Agent-483
  • Excel 5 Laroux/Larou-CV macro-virus marker cluster critical OLE_XLS5_LAROUX_MACRO_VIRUS
    Legacy Excel workbook contains a Laroux/Larou-CV macro-virus marker cluster including auto_open execution and workbook/module replication strings. This is a narrow indicator for an infected legacy Excel macro workbook.

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