Xls.Trojan.Escape — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 5dc9d86fd0f5ab2f…

MALICIOUS

Office (OLE) / .XLS

20.0 KB Created: 2010-04-13 15:02:05 Authoring application: Microsoft Excel
MD5: c78f95a8cd831562eb9efbdbc501415f SHA-1: 081a33aec1c08a44393f861636476cef56667292 SHA-256: 5dc9d86fd0f5ab2fca913d9555ff71e2e1ee5806debc9f22d5851811a8a2eb30
180 Risk Score

Malware Insights

Xls.Trojan.Escape · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1547.001 Registry Run Keys / Startup Folder

This XLS file contains VBA macros, including an Auto_Open macro, which is a strong indicator of malicious intent. The script attempts to copy itself to the Excel startup folder as 'StartUp.xls' and configures Excel to execute its macros automatically, establishing persistence. This behavior is consistent with known malware families designed to maintain a foothold on the system.

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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