Office (OLE) malware analysis — malicious · e027a4749eac0402

MALICIOUS

Office (OLE)

20.0 KB Created: 2010-05-26 08:25:23 Authoring application: Microsoft Excel

MD5: 475d59528cdaaeb6f1a07698835e1cdd SHA-1: 53b7639d2c5b85ea55f7d9a0bb9828e8708d72cc SHA-256: e027a4749eac040241c99784b6b958017e3f2680f37811d219f41d3bae360270

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic

The file is identified as malicious by ClamAV with multiple critical detections, including 'Xls.Trojan.Escape-2'. Static analysis reveals the presence of VBA macros, specifically an Auto_Open macro, which is a common technique for executing malicious code upon opening the document. No document body content was available for analysis, and no scripts were extracted beyond the VBA macro itself. The macro's specific actions could not be determined due to its obfuscated nature, but its presence in an Auto_Open function strongly suggests it is used for initial execution of a 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.

Filename	Kind	Source	Size
`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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