Office (OLE) / .XLS malware analysis — malicious · ad682974afe24641

MALICIOUS

Office (OLE) / .XLS

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

MD5: ce9aef0eeccadcb8bbf463e2158e718c SHA-1: 50ed2e5bbe1ac51ae8a26f005f17ba14ef30be88 SHA-256: ad682974afe24641e8f2aa645a02f24bafd8595d6746ad789e4ef351807c6399

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.005 Visual Basic T1105 Ingress Tool Transfer

The file is a macro-enabled Excel spreadsheet containing Auto_Open and Auto_Close VBA macros. The presence of these macros, combined with the ClamAV detection name 'Doc.Downloader.Docusign112100-9908075-0', strongly suggests that the VBA code is designed to download and execute a second-stage payload. The VBA code itself appears to be primarily focused on UI manipulation, but the presence of Auto_Open indicates an intent to run code automatically.

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` `b7388804061497f168633a436d67a41b41f67d332432ab9017039fff0030875c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	4998 bytes

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