Office (OLE) / .XLS malware analysis — malicious · 6dc90783c9185822

MALICIOUS

Office (OLE) / .XLS

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

MD5: ad36e7f2009929b9ea032145e9efc784 SHA-1: fb3e81002849686038d9974a5d362c41286c3349 SHA-256: 6dc90783c91858220b257148665367575ddf29cb44f6a9a23acd3f7159f3922d

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The sample is an Excel 4.0 (XLM) macro-enabled spreadsheet that uses an Auto_Open entry point to execute its malicious code. It employs a lure by impersonating DocuSign to trick the user into enabling macros. The XLM macro attempts to download a file from 'mymilld.com/autospace.png' using functions like URLMon and RLDownloadToFileA, likely to fetch and execute a second-stage payload.

Heuristics 5

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
Document signing service impersonation lure medium SE_DOCUSIGN_LURE

Document impersonates DocuSign, Adobe Sign, or a similar signing service in a signing-request context
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://,DllRegisterServer

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`xlm_macros.txt` `2cb96c232fb0d86170a66d19bf3d2fb124ec6438e1546e5eba0ddfc216e6c8ab`	xlm-macro	oletools.olevba.extract_all_macros (XLM macro listing)	1895 bytes

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