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

Static analysis result for SHA-256 af2b303ab05fa633…

MALICIOUS

Office (OLE) / .XLS

13.5 KB Created: 2010-03-29 11:16:23 Authoring application: Microsoft Excel
MD5: a83321b16c854db3648791ce8796dbe2 SHA-1: 1c5d2fb203b2106be9b74af7d18632cab28b5146 SHA-256: af2b303ab05fa6334655c797af248aef2aa20ab6b9ca1151c0febad4fd70ea91
180 Risk Score

Malware Insights

Xls.Trojan.Escape · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic

The sample is an Excel file with a high-confidence detection of VBA macros, specifically an Auto_Open macro which is commonly used for malicious execution. ClamAV signatures 'Xls.Trojan.Escape-2' and 'Xls.Trojan.Escape-1' strongly indicate this is a variant of the Escape trojan. The Auto_Open macro likely executes a malicious payload upon opening the document.

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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