MALICIOUS
222
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1105 Ingress Tool Transfer
The file contains VBA macros, including Auto_Open and Auto_Close, which are commonly used to execute malicious code upon opening or closing a document. Critical heuristics indicate obfuscated API calls to 'URLDownloadToFile', suggesting the macro's intent is to download a second-stage payload from one of the embedded URLs. The ClamAV detection further confirms its malicious nature as a downloader.
Heuristics 6
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Dangerous API name reassembled from split string literals critical OLE_VBA_SPLIT_KEYWORD_OBFUSCATIONVBA concatenates short string literals that reassemble a dangerous API/ProgID/LOLBin name (e.g. Scripting.FileSystemObject, WScript.Shell, powershell, URLDownloadToFile) which appears in no single literal. Splitting an API name across string concatenation is done only to evade keyword scanning.
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ClamAV: Doc.Downloader.Docusign112100-9908075-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Doc.Downloader.Docusign112100-9908075-0
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Auto_Open macro high OLE_VBA_AUTOAuto_Open macro
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Auto_Close macro high OLE_VBA_AUTOCLOSEAuto_Close macro
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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://188.165.62.61/
- http://79.141.171.170/
- http://185.244.150.138/
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
macros.bas954b17b40618c472edefb57d86095b1fb0c0b22bc019811f22885378cc130af1 |
vba-macro | oletools.olevba.extract_macros (decoded VBA source) | 5040 bytes |
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