MALICIOUS
382
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.005 Visual Basic
T1204.002 Malicious File
The sample is a malicious Office document containing VBA macros, specifically an AutoOpen macro, which is designed to execute an embedded OLE package. This package is identified as containing a Portable Executable (PE) file, likely the primary payload. The ClamAV detection name 'Win.Dropper.XtremeRAT-9995740-0' strongly suggests the family and its dropper functionality. The document also contains a lure to execute clipboard content, further indicating malicious intent.
Heuristics 9
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OLE with Ole10Native — possible CVE-2026-21514 exploitation high CVE likely CVE_2026_21514Document contains a Word OLE object with Ole10Native plus executable, PE, or risky remote-link indicators. CVE-2026-21514 exploits OLE metadata validation; this stronger structure is treated as likely exploitation.
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Embedded PE executable critical OLE_EMBEDDED_EXEMZ/PE header found inside document — possible embedded executable
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Ole10Native package drops an auto-executable payload critical OFFICE_PACKAGE_RISKY_FILEOLE Package displayName or fullPath ends in a directly auto-executable extension (a runnable binary or a script the default shell host runs on double-click). Embedding such a payload inside an Office document has no benign authoring use — it is a malware-delivery dropper.
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ClamAV: Win.Dropper.XtremeRAT-9995740-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Win.Dropper.XtremeRAT-9995740-0
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ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAVClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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AutoOpen macro high OLE_VBA_AUTOOPENAutoOpen macro
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Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LUREDocument tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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VBA macros detected medium OLE_VBA_MACROSDocument contains VBA macro code
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Embedded URL info EMBEDDED_URLOne 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://schemas.openxmlformats.org/officeDocument/2006/bibliography
- http://schemas.openxmlformats.org/officeDocument/2006/customXml
- http://schemas.openxmlformats.org/drawingml/2006/main
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
macros.bas097c54ab9fcd7746ec8bda24edbb0a5d79ba6d7f69f2169b4ee3b6a55f276b5a |
vba-macro | oletools.olevba.extract_macros (decoded VBA source) | 649 bytes |
embedded_office_0000f8b0.exeaaa05a970a9b79a8a236e6cbf0c8a63dd0c5c2e2669b5b3f2d57c161e450ab7f |
embedded-pe | Office MZ+PE at offset 0xF8B0 | 218960 bytes |
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Detection
ClamAV:
Win.Dropper.XtremeRAT-9995740-0
Obfuscation or payload:
unlikely
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ole10native_00.bin5b3f9b081585451a88a0c60c8a9fa16a3f0ff54c08ccea348d80a67eadb457ab |
ole-package | OLE Ole10Native stream: ObjectPool/_1690984092/Ole10Native | 197106 bytes |
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Detection
ClamAV:
Win.Dropper.XtremeRAT-9995740-0
Obfuscation or payload:
unlikely
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