MALICIOUS
260
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1027 Obfuscated Files or Information
T1105 Ingress Tool Transfer
The RTF file contains embedded OLE object data, specifically a Package object, which in turn contains a PE header. ClamAV detections identify this as Win.Trojan.Buzus-7508. This strongly suggests the RTF is a dropper designed to execute the embedded malicious binary.
Heuristics 6
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PE header (with DOS stub) in hex data critical RTF_MZ_HEXHex-encoded PE (MZ + DOS stub) found inside RTF — likely an embedded executable payload
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ClamAV: Win.Trojan.Buzus-7508 critical CLAMAV_DETECTIONClamAV detected this file as malware: Win.Trojan.Buzus-7508
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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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Package object class high RTF_OBJCLASS_PACKAGEOLE Package object — can wrap arbitrary files
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OLE object data medium RTF_OBJDATARTF contains 1 \objdata section(s) — embedded OLE objects
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Embedded OLE object medium RTF_OBJEMBRTF contains \objemb — embedded OLE object
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off000000d2.bin0eee49079f61499f33f922ac59d6a0c4c16a86890ea512abbbfdca23967fa9dc |
rtf-objdata-decoded | RTF \objdata at offset 0xD2 | 33547 bytes |
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Detection
ClamAV:
Win.Trojan.Buzus-7508
Obfuscation or payload:
unlikely
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