Office (OLE) / .XLS malware analysis — malicious · bc0cdd10122a20b1

MALICIOUS

Office (OLE) / .XLS

367.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel

MD5: cb61a096797b167431c13e40db940505 SHA-1: 44eebe1afbc76adff6751ae3a660f1904ee8bd59 SHA-256: bc0cdd10122a20b192c259e39d78cb2a85e709a2d4630b8394f19bdce66255db

102 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic for Applications T1204.002 Malicious File

The presence of Excel 4.0 (XLM) macros, specifically an Auto_Open entry, indicates an attempt to automatically execute code upon opening the document. The 'SE_ENABLE_LURE' heuristic confirms that the document likely prompts the user to enable macros. The extracted URLs are likely used to download and execute a second-stage payload, as suggested by the reconstructed URL fragments in the DOC BODY and the general nature of XLM macro abuse.

Heuristics 4

Excel 4.0 Auto_Open defined name critical OLE_XLM_AUTOOPEN_DEFINEDNAME

oletools recovered an Auto_Open / Auto_Close entry from an Excel 4.0 macro sheet. The raw BIFF name can be tokenized or partially opaque to byte-string checks, but the recovered macro listing confirms the workbook has an XLM auto-execution entry.
Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPEN

Workbook contains an Excel 4.0 macro sheet sub-stream — XLM is rarely seen in modern legitimate workbooks and was a major Office malware vector during 2020-2022.
Macro/content-enable lure medium SE_ENABLE_LURE

Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://smartpalakatva.com/edQsUZOLlE/th.html
- https://pilstlcommodities.com/Ov4FlB3lpy/th.html

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`xlm_macros.txt` `e61304013e31eadd8bf35fc5d3e6cbadd61463966f2a2d09ae24f65eb0ee3106`	xlm-macro	oletools.olevba.extract_all_macros (XLM macro listing)	8349 bytes

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