MALICIOUS
240
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1566.001 Spearphishing Attachment
The file contains VBA macros, specifically an Auto_Open macro, which is a strong indicator of malicious intent. The macro attempts to save itself as 'PLDT.XLS' in the startup path, likely to establish persistence or facilitate the execution of a secondary payload. The presence of 'laroux' markers and ClamAV detection further confirms its malicious nature as a variant of the Laroux macro virus.
Heuristics 5
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Excel 5 Laroux/Larou-CV macro-virus marker cluster critical OLE_XLS5_LAROUX_MACRO_VIRUSLegacy Excel workbook contains a Laroux/Larou-CV macro-virus marker cluster including auto_open execution and workbook/module replication strings. This is a narrow indicator for an infected legacy Excel macro workbook.
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ClamAV: Xls.Trojan.Laroux-28 critical CLAMAV_DETECTIONClamAV detected this file as malware: Xls.Trojan.Laroux-28
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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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Auto_Open macro high OLE_VBA_AUTOAuto_Open macro
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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.bas366245e8555da7043edd6a1238f613c67398c6a762e65588d8fafe7899f63c20 |
vba-macro | oletools.olevba.extract_macros (decoded VBA source) | 2118 bytes |
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Detection
ClamAV:
Xls.Trojan.Laroux-28
Obfuscation or payload:
unlikely
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