MALICIOUS
180
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1059.001 PowerShell
T1566.002 Spearphishing Attachment
The file is an Excel document with a high-confidence verdict for maliciousness. Static analysis detected VBA macros, specifically a Workbook_Open auto-execution macro that uses CreateObject. This indicates the macro is designed to run code upon opening the document, likely to download and execute a second-stage payload. The presence of VBA Chr string obfuscation further supports this. No specific family could be identified, and no external IOCs were extracted.
Heuristics 5
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Workbook_Open macro high OLE_VBA_WBOPENWorkbook_Open macro
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CreateObject call high OLE_VBA_CREATEOBJCreateObject call
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VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXECCompiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
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Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGEOne or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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VBA macros detected medium OLE_VBA_MACROSDocument contains VBA macro code
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
macros.basda4af6305088752ebc8deea48330c1f282d2b8a48a6575612555cc779c35a5e3 |
vba-macro | oletools.olevba.extract_macros (decoded VBA source) | 503985 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 15 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.
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