MALICIOUS
120
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1204.002 Malicious File
The sample is an Excel 4.0 macro-enabled spreadsheet that uses an Auto_Open macro to execute. It impersonates DocuSign to trick the user into enabling macros. The macro sheet contains calls to functions like RLDownloadToFileA and rundll32, indicating it's designed to download and execute a second-stage payload from one of the listed URLs. The specific family is not identifiable from the available evidence.
Heuristics 4
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Excel 4.0 Auto_Open defined name critical OLE_XLM_AUTOOPEN_DEFINEDNAMEoletools 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.
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Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPENWorkbook 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.
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Macro/content-enable lure medium SE_ENABLE_LUREDocument instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
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Document signing service impersonation lure medium SE_DOCUSIGN_LUREDocument impersonates DocuSign, Adobe Sign, or a similar signing service in a signing-request context
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
xlm_macros.txt28583d80fd380b8ce44feed33486a243b72383f3879b4322afeadd5f9732c23b |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 2255 bytes |
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