Office (OLE) / .XLS malware analysis — malicious · e48388101517eb17

MALICIOUS

Office (OLE) / .XLS

138.5 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel

MD5: cd93700f51d10e6a9dc83aee520e7594 SHA-1: 9812ece66c4fcf5d242ec31d6a909e72d5ff6fba SHA-256: e48388101517eb170c2ecd6ecb2d1f682d5e185b2c9f844fe83a99917d82f3a4

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.005 Visual Basic

The file is an Excel spreadsheet containing VBA macros, with high-severity heuristics indicating the presence of Auto_Open and Auto_Close macros. The ClamAV detection name 'Doc.Downloader.Docusign112100-9908075-0' strongly suggests a downloader functionality. The Auto_Open macro is designed to execute automatically when the document is opened, which is a common technique for initiating the download and execution of further malicious content. The script itself appears to be truncated, preventing a more detailed analysis of its specific actions.

Heuristics 4

ClamAV: Doc.Downloader.Docusign112100-9908075-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Docusign112100-9908075-0
Auto_Open macro high OLE_VBA_AUTO

Auto_Open macro
Auto_Close macro high OLE_VBA_AUTOCLOSE

Auto_Close 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` `7cf54625912b6a70c405295d304bfd4a2af89ffbc93f0b4610b641f0bf506356`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	4328 bytes

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