Office (OLE) / .XLS malware analysis — malicious · 1e5a874948e3508f

MALICIOUS

Office (OLE) / .XLS

2.76 MB Created: 2006-12-26 20:07:17 Authoring application: Microsoft Excel

MD5: 3270bfb226f538fae3244c6319c0708e SHA-1: 89a9aa350e9af286fd566fea09e3e9a68f3626f7 SHA-256: 1e5a874948e3508feb9ef45c6a9ac51ea0031ac6a3233425da866629dad9b73d

100 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.002 Spearphishing with Other

The file is an Excel spreadsheet identified as malicious due to the presence of VBA macros. A Workbook_Open macro was detected, indicating that the malicious code executes automatically upon opening the file. The macro source file 'macros.bas' was extracted, and the heuristic 'EXTRACTED_FILE_STATIC_TRIAGE' noted VBA Chr string obfuscation, suggesting the macro is designed to download and execute a second-stage payload.

Heuristics 3

Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_Open macro
Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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` `0172dbd03e9611bd020f4b92c47ff04fec7c623998221bb6e09de066decda3f2`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	59076 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 21 Chr/ChrW string-construction calls.

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