MALICIOUS
260
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1566.001 Spearphishing Attachment
The file is identified as malicious by ClamAV with the signature Doc.Trojan.Xaler-1. High-severity heuristics indicate the presence of VBA macros, specifically AutoOpen and Document_Open, which are commonly used to execute malicious code upon opening the document. An extracted artifact named 'macros.bas' was also flagged as suspicious due to VBA Chr string obfuscation. The primary function of the detected macros is likely to download and execute a second-stage payload, as suggested by the nature of Xaler trojans.
Heuristics 6
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ClamAV: Doc.Trojan.Xaler-1 critical CLAMAV_DETECTIONClamAV detected this file as malware: Doc.Trojan.Xaler-1
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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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AutoOpen macro high OLE_VBA_AUTOOPENAutoOpen macro
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Document_Open macro high OLE_VBA_DOCOPENDocument_Open macro
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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.bas61247e472c7b4ee8b867b844ad6a9e361263f9186b9673dd6b88479bffad49c0 |
vba-macro | oletools.olevba.extract_macros (decoded VBA source) | 254910 bytes |
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Detection
ClamAV:
Doc.Trojan.Xaler-1
Obfuscation or payload:
likely
Carved artifact contains 10 Chr/ChrW string-construction calls.
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