Office (OLE) / .XLS malware analysis — malicious · 7c065bc99b79a248

MALICIOUS

Office (OLE) / .XLS

359.0 KB Created: 2025-01-14 00:40:28 Authoring application: Microsoft Excel

MD5: bb991dafdd848f8b335a301fc965f467 SHA-1: ebb30fd99c2e6cbae392c337df5876759e53730d SHA-256: 7c065bc99b79a2485f823a5fdf862627e9e4d25fa8d12d673810ea39d56e2be2

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The presence of an Auto_Open macro, combined with a Shell() call and CreateObject() call within the VBA code, strongly indicates malicious intent. The macro is designed to execute arbitrary commands, likely to download and run a second-stage payload. The extracted file 'macros.bas' contains the VBA macro code.

Heuristics 6

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
Auto_Open macro high OLE_VBA_AUTO

Auto_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
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
Environ() call (env variable access) low OLE_VBA_ENVIRON

Environ() call (env variable access)

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `47c73c5a8a2b5c5792226e4a94929fcd7a43aab462c7b5e2b1836f59cf8ed480`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1993140 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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