SUSPICIOUS
40
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1059 Command and Scripting Interpreter
T1204.002 Malicious File
The file contains VBA macros with an Auto_Open function, which is a common technique for executing malicious code upon opening the document. The critical heuristic firing for Shell() call in VBA indicates that the macro attempts to execute external commands. The script uses RByteEncrypt to obfuscate strings, but the reconstructed command appears to be 'Calc + calcd + akaaksdokkkaosdkasodkasdokwnduhand', suggesting it's designed to download and execute a secondary payload.
Heuristics 5
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Shell() call in VBA critical OLE_VBA_SHELLShell() call in VBA
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Auto_Open macro high OLE_VBA_AUTOAuto_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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VBA macros detected medium OLE_VBA_MACROSDocument contains VBA macro code
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Macro capabilities present but unconfirmed info MACRO_CAPABILITY_UNCORROBORATEDThe document's VBA exposes execution capabilities (Shell/WScript/CreateObject/auto-exec) but nothing corroborates malicious intent — no obfuscation, memory-exec primitive, download+exec chain, encoded payload, LOLBin, DDE, AV hit, or suspicious URL. The verdict was capped at 'suspicious' so legitimate macro-heavy business documents are not flagged malicious on capability presence alone.
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
macros.basd7c3cf8f7a633dbbc73a8bc8aa195104e63bd9218b3d971c256ac84b44e1599f |
vba-macro | oletools.olevba.extract_macros (decoded VBA source) | 27514 bytes |
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