MALICIOUS
300
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
The RTF file contains a large amount of hex-encoded data within an OLE object, which includes a PE header. ClamAV signatures indicate this is Win.Trojan.Darkkomet-9857871-0. The presence of the PE header within the OLE object strongly suggests the file is designed to drop and execute a malicious payload.
Heuristics 7
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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.Darkkomet-9857871-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Win.Trojan.Darkkomet-9857871-0
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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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Large hex data blocks in OLE object high RTF_EXCESSIVE_HEXRTF contains ~1481KB of hex-encoded data inside \objdata sections — may hide a payload
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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_off00000124.bin47dfd5e50f513fbaca09ed1afd15bfe5bcc41b3c663cd4a87eb695590dfca46a |
rtf-objdata-decoded | RTF \objdata at offset 0x124 | 722211 bytes |
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Detection
ClamAV:
Win.Trojan.Darkkomet-9857871-0
Obfuscation or payload:
unlikely
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