MALICIOUS
260
Risk Score
Malware Insights
MITRE ATT&CK
T1559.002 Component Object Model Hijacking
T1204.002 Malicious File
The RTF document contains an embedded OLE object, identified as a Package object. Static analysis reveals a PE header within the object's data, indicating it is an executable. ClamAV signatures confirm the presence of Win.Trojan.Buzus-8683, a known trojan. The presence of OLE object data and a PE header strongly suggests the document is a delivery mechanism for this malware.
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-8683 critical CLAMAV_DETECTIONClamAV detected this file as malware: Win.Trojan.Buzus-8683
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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.bin60f01302573ccc1f637ae3c8c77adb7385ea3499cac52390f9dd09be60a11b81 |
rtf-objdata-decoded | RTF \objdata at offset 0xD2 | 19191 bytes |
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Detection
ClamAV:
Win.Trojan.Buzus-8683
Obfuscation or payload:
unlikely
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