Office (OLE) / .XLS malware analysis — malicious · a453af130dea2407

MALICIOUS

Office (OLE) / .XLS

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

MD5: f5b58a4e2f658dbaec29b354e4fb932e SHA-1: 1b109d9910c5c1e0933127e17dd3fd338fb7ec3b SHA-256: a453af130dea2407e2400ec20cc906ba07e5fde9d8f1a51a65ecfd4528533593

80 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is an Excel 4.0 (XLM) macro-enabled spreadsheet. It contains an Auto_Open macro that uses dangerous functions, including RUN, to execute code. The document body suggests a lure to trick the user into enabling macros, likely to download and execute a payload from the embedded URL.

Heuristics 4

XLM Auto_Open with dangerous formula APIs high OLE_XLM_DANGEROUS_FN

Excel 4.0 macro sheet contains an Auto_Open / Auto_Close entry and dangerous XLM formula APIs that can invoke programs, write files, or transfer control without VBA.
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 http://31.214.157.206/22.gif�

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`xlm_macros.txt` `0b5b119eb061b1b93590cf2630c71be563ede46fc4362728188f73409889e0bf`	xlm-macro	oletools.olevba.extract_all_macros (XLM macro listing)	2597 bytes

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