Xls.Trojan.Escape Office (OLE) / .XLS malware analysis — malicious · 215319964243824b

MALICIOUS

Office (OLE) / .XLS

21.5 KB Created: 2010-05-20 10:41:03 Authoring application: Microsoft Excel

MD5: 5e0b15761fca381cbcd01ae5c09a7625 SHA-1: b04c16820ca4385b2033d89d8c038799af301a65 SHA-256: 215319964243824bc7f3292ea25413675d8c6a065701b0b3d963bd39ff20473e

180 Risk Score

Malware Insights

Xls.Trojan.Escape · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic for Applications T1566.002 Spearphishing Attachment

The file is identified as malicious by ClamAV with the signature Xls.Trojan.Escape-2. Static analysis detected VBA macros, specifically an Auto_Open macro, which is a common technique for executing malicious code upon opening the document. The presence of an Auto_Open macro suggests the intent is to immediately run the embedded malicious script, likely to download and execute a second-stage payload. The document body contains a bill of materials, which is likely a lure to disguise the malicious nature of the file.

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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