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

Static analysis result for SHA-256 791c0ec60cf365f4…

MALICIOUS

Office (OLE) / .XLS

25.0 KB Created: 2009-03-30 06:24:02 Authoring application: Microsoft Excel
MD5: 426f16a861475717c02a976acc21267c SHA-1: 2abd843583595a3f038330d2a371d7a9d5ad0edc SHA-256: 791c0ec60cf365f4c6d0e5cf665279f48272c3bcbbb331b0b65ffbeb7f8a7353
180 Risk Score

Malware Insights

Xls.Trojan.Escape · confidence 95%

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

The file is an Excel spreadsheet containing VBA macros, specifically an Auto_Open macro, which is a common technique for initial execution. ClamAV detections for 'Xls.Trojan.Escape-2' and 'Xls.Trojan.Escape-1' on an extracted artifact strongly suggest this family. The presence of the Auto_Open macro indicates the malicious payload will likely execute automatically upon opening the document, facilitating initial compromise.

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
5309234b5789e0d1ed53e5edff4adb46309530da8f93beb3beddb427742d4af1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1986 bytes
Detection
ClamAV: Xls.Trojan.Escape-1
Obfuscation or payload: unlikely

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