RTF malware analysis — malicious · b6751b202504470d

MALICIOUS

RTF

229.2 KB

MD5: 29f6153044acb1459e50d4f96ce38973 SHA-1: 8b0d51ba285ecbd1e436757bbfb17c17ff048959 SHA-256: b6751b202504470d1a3b571e236e2a066f412558c8eb37950c05059c64ac8ca7

180 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment T1059 Command and Scripting Interpreter T1059.005 Command and Scripting Interpreter: Visual Basic

The RTF document contains multiple OLE objects, with heuristics indicating automatic linking and update triggers. The 'SE_ENABLE_LURE' heuristic confirms the document instructs the user to enable macros or editing, a common technique for malware droppers. This suggests the document is designed to bypass security settings and execute an embedded payload.

Heuristics 6

Composite Moniker in RTF OLE object high CVE related RTF_COMPOSITE_MONIKER_RELATED

RTF contains Composite Moniker CLSID in OLE object context, but no nearby scriptlet/SCT payload was confirmed. Treat as related moniker attack-surface evidence rather than proof of CVE-2017-8570 exploitation.
Automatically linked OLE object high RTF_OBJAUTLINK

RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
\objupdate forces OLE activation high RTF_OBJUPDATE

RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
OLE object data medium RTF_OBJDATA

RTF contains 3 \objdata section(s) — embedded OLE objects
Embedded OLE object medium RTF_OBJEMB

RTF contains \objemb — embedded OLE object
Macro/content-enable lure medium SE_ENABLE_LURE

Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00000965.bin` `decf92835c3b536added92fc7c0634225eb4c3e4eb0486295cadddff6394694d`	rtf-objdata-decoded	RTF \objdata at offset 0x965	20614 bytes
`objdata_01_off0000b182.bin` `18cff8ef194415d33763880bf64011d23305e4b9143b76244b89e1c53b70a0d5`	rtf-objdata-decoded	RTF \objdata at offset 0xB182	2632 bytes
`objdata_02_off0000c725.bin` `44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037`	rtf-objdata-decoded	RTF \objdata at offset 0xC725	12297 bytes

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