MALICIOUS
200
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1566.002 Spearphishing Attachment
T1059.005 Visual Basic
The file is an XLS spreadsheet containing VBA macros. A critical heuristic firing indicates the use of the Shell() function within a Workbook_Open macro, which is a common technique for executing arbitrary commands. The extracted document body contains obfuscated PowerShell code, strongly suggesting the macro's purpose is to launch a PowerShell process to download and execute further malicious content. The presence of a Workbook_Open auto-execution macro and the Shell() call are high-confidence indicators of malicious intent.
Heuristics 5
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Shell() call in VBA critical OLE_VBA_SHELLShell() call in VBA
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Workbook_Open macro high OLE_VBA_WBOPENWorkbook_Open macro
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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.basf2d9150e91aa2a23dfea3ad0ac93ea403801ab65b808e0759f81c3a19857d024 |
vba-macro | oletools.olevba.extract_macros (decoded VBA source) | 2167 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved macro source contains an auto-exec entry point and execution/download terms.
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