Office (OLE) / .XLS malware analysis — malicious · b8c0114b6831210b

MALICIOUS

Office (OLE) / .XLS

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

MD5: 830f396c97d314928162506d6b6a8eef SHA-1: 70e131d393872e39ea0a8d6aa29d02517605aff7 SHA-256: b8c0114b6831210b246136afeb625ab1aad35355c966e6ea1eeae4a4566653a8

140 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic for Applications T1204.002 Malicious File T1059.001 PowerShell T1105 Ingress Tool Transfer

The sample is an Excel 4.0 (XLM) macro-enabled spreadsheet. It contains an Auto_Open macro that references dangerous functions like RUN and URLDownloadToFile, indicating it attempts to download and execute a second-stage payload from the provided URL. The document body and heuristics suggest a lure to enable macros, a common technique for malware droppers.

Heuristics 5

Reference to URLDownloadToFile API critical SC_STR_URLDOWNLOAD

Reference to URLDownloadToFile API
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://officialhydromaxpump.pk/gbmmnwqbifs/�
- http://officialhydromaxpump.pk/gbmmnwqbifs/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`xlm_macros.txt` `b9c43729ed3e5f60ceb7e1b9e49a555b973cf19e1ff5cba21e82e8451badee9a`	xlm-macro	oletools.olevba.extract_all_macros (XLM macro listing)	3144 bytes

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