Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 d973be26aebcf7ed…

MALICIOUS

Office (OLE)

15.0 KB Created: 2002-07-14 13:22:07 Authoring application: Microsoft Excel
MD5: 0ba617e4f037cf7708da8f3b4e5dfb7c SHA-1: 4cb4304963c11bf4cfbdb069f3ed924015cf5466 SHA-256: d973be26aebcf7ed3688906497931e547518c48c854b782312a43a60deb4dfc1
180 Risk Score

Malware Insights

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

The file is an Excel document containing VBA macros, with a critical heuristic indicating an Auto_Open macro. This suggests the document is designed to automatically execute malicious code when opened. ClamAV detections for 'Xls.Trojan.Escape-2' and 'Xls.Trojan.Escape-1' further confirm its malicious nature. The Auto_Open macro likely serves to download and execute a secondary payload.

Heuristics 4

  • ClamAV: Xls.Trojan.Escape-2 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Trojan.Escape-2
  • 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
b1dc6e799f600e1fe03c12ee5c927d9c20e72385747b65f9e697c96da1cbf849		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1767 bytes
Detection
ClamAV: Xls.Trojan.Escape-1
Obfuscation or payload: unlikely

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