Xls.Trojan.Laroux-1 — Office (OLE) / .EXE malware analysis

Static analysis result for SHA-256 ded97719bfb0525a…

MALICIOUS

Office (OLE) / .EXE

58.0 KB Created: 1999-02-08 09:24:15 Authoring application: Microsoft Excel
MD5: b9cdd367cefa18c452affb1297b8ac8c SHA-1: 767f61714bb4e2000c4c8cfc0f4fdadf4ec7b476 SHA-256: ded97719bfb0525a4f101146b5bf7f21f94b188afe1a42ed369264f67d005045
180 Risk Score

Malware Insights

Xls.Trojan.Laroux-1 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic

The file is identified as malicious by ClamAV with the signature Xls.Trojan.Laroux-1. 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 VBA macros are likely responsible for downloading and executing a secondary payload, although the specific actions are not detailed in the provided evidence.

Heuristics 4

  • ClamAV: Xls.Trojan.Laroux-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Trojan.Laroux-1
  • 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
5c24cbefc66b671d9f061c5f10d0235cd38384d88d48119f95cf7399249cc0ad		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1880 bytes
Detection
ClamAV: Xls.Trojan.Laroux-1
Obfuscation or payload: unlikely

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