Xls.Trojan.Laroux-22 — Office (OLE) / .EXE malware analysis

Static analysis result for SHA-256 b89cf49bbc3a635e…

MALICIOUS

Office (OLE) / .EXE

40.5 KB Created: 1999-02-08 09:24:15 Authoring application: Microsoft Excel
MD5: 13c038e67a80334353519ba3c2803422 SHA-1: c6c0e0b86a35bceb27c7e7271616e8d41f773317 SHA-256: b89cf49bbc3a635e6d67647fe025947d3af4d6af6168a0af7e78a5926051930f
180 Risk Score

Malware Insights

Xls.Trojan.Laroux-22 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic

The file is identified as malicious by ClamAV with the signature Xls.Trojan.Laroux-22. Static analysis revealed the presence of VBA macros, specifically an Auto_Open macro, which is a common technique for executing malicious code upon opening the document. The embedded macros are likely responsible for the payload execution.

Heuristics 4

  • ClamAV: Xls.Trojan.Laroux-22 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Trojan.Laroux-22
  • 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
3951b2eef24aa2ac5d3fd4f41061513a90bca7337187fb854b04aa665d30db0b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 3866 bytes
Detection
ClamAV: Xls.Trojan.Laroux-22
Obfuscation or payload: unlikely

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