Office (OLE) / .XLS malware analysis — malicious · 3fabedab03fa4dd4

MALICIOUS

Office (OLE) / .XLS

31.5 KB Created: 2010-05-27 12:55:07 Authoring application: Microsoft Excel

MD5: a5e2037275370776b1af98584c700cd5 SHA-1: 08846c20bcb05b36c02ae131d8ad543c71305f38 SHA-256: 3fabedab03fa4dd4ca4b100c9d09d26462f4f6e2babec187fca268d9e95de89e

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The critical ClamAV detections for 'Ppt.Malware.Laroux-10036124-0' and 'Xls.Trojan.Escape-1' strongly indicate malicious intent. The presence of a high-severity 'Auto_Open' VBA macro confirms that the malware is designed to execute automatically upon opening the spreadsheet, likely to download and execute a secondary payload. The document body content is generic and does not provide further clues about the specific lure.

Heuristics 4

ClamAV: Ppt.Malware.Laroux-10036124-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Ppt.Malware.Laroux-10036124-0
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` `fb2929454da53a7c274256eb0b38ca9476f9f1c61d52f3b7e15bf6ac20b85c3e`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	2073 bytes
Detection ClamAV: Xls.Trojan.Escape-1 Obfuscation or payload: unlikely

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