Office (OLE) / .XLS malware analysis — malicious · 9d4082b43c5ac5f4

MALICIOUS

Office (OLE) / .XLS

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

MD5: d188d4ea5956c58923f341a849f39a14 SHA-1: b44f4446df7e0e9d845334f6177934c5543dc3bc SHA-256: 9d4082b43c5ac5f4d4dd72a64ec91b05a6fa7033eb6873e8a16997f595fcfa1c

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The file is an Excel spreadsheet containing VBA macros, including an Auto_Open macro, which is a common technique for executing malicious code upon opening. The ClamAV detection 'Doc.Downloader.Docusign112100-9908075-0' suggests a downloader functionality. Although the provided VBA script primarily manipulates shape visibility and sheet protection, the presence of Auto_Open and the downloader heuristic indicate a malicious intent, likely to download and execute a second-stage payload.

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` `cd468214d3d2de6ed0e54668d5bbf78b9464f08618e981095b737862968ab57b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	5239 bytes

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