Office (OLE) / .XLS malware analysis — malicious · f77771e7bea03f22

MALICIOUS

Office (OLE) / .XLS

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

MD5: 12d5726b959a9a92ce9d1cf96be2035a SHA-1: 3a883ffa7ff4cce154905db64b6792eb137c3e5c SHA-256: f77771e7bea03f22b2502f78b672374ab62e640614285145ede23bb96622372c

140 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious Macro T1059.005 PowerShell T1204 User Execution T1059 Command and Scripting Interpreter

The file contains Excel 4.0 (XLM) macros, specifically an Auto_Open function that utilizes dangerous APIs like RUN. The presence of the URLDownloadToFileA API and an embedded URL (http://borgernewsherald.com/AMPLinersOnline/lubiousindendets.dll) strongly suggests the macro's intent is to download and execute a second-stage payload. The document also contains a lure to enable macros or editing, a common technique for bypassing security measures. The file attempts to save the downloaded content to C:\PerLog\Help\wsapx.

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://borgernewsherald.com/AMPLinersOnline/lubiousindendets.dll

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`xlm_macros.txt` `4649ec241e8214cbafa50315161920a7da82c5c714554061f792ddc9dc864715`	xlm-macro	oletools.olevba.extract_all_macros (XLM macro listing)	3298 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.