MALICIOUS
240
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic for Applications
T1059.001 PowerShell
The sample is an OLE document containing VBA macros. The critical heuristic 'OLE_VBA_SHELL' indicates that the macros attempt to execute commands via the Shell() function. The presence of 'macros.bas' and the ClamAV detections further confirm malicious intent. The document body consists of biology review questions, suggesting a lure to encourage macro execution. The primary attack pattern involves leveraging VBA macros to execute arbitrary commands, likely for downloading and running a secondary payload.
Heuristics 5
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Shell() call in VBA critical OLE_VBA_SHELLShell() call in VBA
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ClamAV: Doc.Trojan.Marker-31 critical CLAMAV_DETECTIONClamAV detected this file as malware: Doc.Trojan.Marker-31
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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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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.bas75e96e55c97fa0f5d73a9b9611177fe06d03ed719fd57bbc8a7b2734b18c0f9a |
vba-macro | oletools.olevba.extract_macros (decoded VBA source) | 6611 bytes |
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Detection
ClamAV:
Doc.Trojan.Marker-3
Obfuscation or payload:
likely
Carved macro source contains an auto-exec entry point and execution/download terms.
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