Malware Insights
The file is a Microsoft Word document containing VBA macros, as indicated by multiple OLE and VBA heuristic firings. The document body explicitly warns of a macro virus, suggesting a social engineering lure. The presence of 'CreateObject' and 'GetObject' calls within the VBA macros, along with the ClamAV detection of 'Doc.Trojan.Tristate-1' on an extracted artifact, strongly suggests the macros are designed to download and execute a malicious payload. No specific family could be identified, but the delivery mechanism is clearly macro-based.
Heuristics 6
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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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OLE document has large unaccounted-for region high OLE_SLACK_ANOMALYOLE file is 52,736 bytes but its declared streams total only 18,572 bytes — 34,164 bytes (65%) live in unallocated sector slack. This is the canonical hiding place for pre-macro-era Office exploit payloads (XOR-encoded shellcode reached via a parser pointer-corruption bug in the document structure).
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CreateObject call high OLE_VBA_CREATEOBJCreateObject call
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GetObject call high OLE_VBA_GETOBJGetObject call
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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.bas28bddf8ef6f90abb80f9eefe64649ae18587fde0fa3bc3c18e805821819aaf91 |
vba-macro | oletools.olevba.extract_macros (decoded VBA source) | 9421 bytes |
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Detection
ClamAV:
Doc.Trojan.Tristate-1
Obfuscation or payload:
likely
Carved artifact contains 12 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.
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