Office (OLE) / .XLS malware analysis — malicious · 413d064540fc7a37

MALICIOUS

Office (OLE) / .XLS

204.5 KB Created: 2020-11-11 23:49:05

MD5: ddfe858a275335889ab850b38f27f8b1 SHA-1: f0b3e4211da7771274224fb7615c819b6461850e SHA-256: 413d064540fc7a3725c78e763c745d611fd39aa3bbea7a76efa89c47e7845bf8

220 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

The critical OLE_VBA_SHELL and OLE_VBA_DOWNLOAD heuristics indicate that the VBA macros within this XLS file are designed to execute arbitrary code and download additional payloads. The Workbook_Open heuristic confirms that this malicious activity is triggered automatically upon opening the document. The presence of macros.bas further supports the macro-based execution vector.

Heuristics 5

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
URLDownloadToFile in VBA critical OLE_VBA_DOWNLOAD

URLDownloadToFile in VBA
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` `e590a81ae98822e5056b8c3789747173a375aeb1f4e7a58ae941431955338351`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	3426 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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