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

Static analysis result for SHA-256 8ee6f72033c34afd…

MALICIOUS

Office (OLE) / .EXE

69.0 KB Created: 1998-08-24 23:10:00 Authoring application: Microsoft Excel
MD5: ec0c2336da847e80f5a8b7b6eaf1bd9a SHA-1: f8b825d508554667a5e4826b2a55fcdc1f565087 SHA-256: 8ee6f72033c34afd9c70abaf9384e85302b1ce48b98a4073b5bc797db5bf4143
180 Risk Score

Malware Insights

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

The file is an Office executable containing a VBA macro, specifically an Auto_Open macro, which is a common technique for initial execution. ClamAV identified this as Xls.Trojan.Laroux-28. The macro is likely designed to download and execute a second-stage payload, although the specific actions are not detailed in the provided heuristics.

Heuristics 4

  • ClamAV: Xls.Trojan.Laroux-28 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Trojan.Laroux-28
  • 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
a5850330c65d4e31d8877e97d10657fea575d501c96cca7b0f2b7f3bb8b08c49		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2025 bytes
Detection
ClamAV: Xls.Trojan.Laroux-28
Obfuscation or payload: unlikely

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