RTF / .DOC malware analysis — malicious · ec3b9ae6266490d1

MALICIOUS

RTF / .DOC

369.0 KB

MD5: 089ad091f1fa7081773d9bdc1a917be2 SHA-1: faf6aced61ffa2e9ba9e2e1f51004f95c9331e01 SHA-256: ec3b9ae6266490d17024e27220a4bb08e20fbdc93b4bc1850c77386bb588eb13

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 object embeddings, with high-confidence firings indicating automatic linking and an update trigger for OLE activation. This suggests the document is designed to exploit OLE object vulnerabilities to execute embedded code. The 'SE_ENABLE_LURE' heuristic further indicates the document likely prompts the user to enable macros or editing, a common technique for malware droppers.

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 4 \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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00000bac.bin` `8348ceb434e70f65f2cca4ebae90efc70b01cae3174b41a263b6e32ee1258125`	rtf-objdata-decoded	RTF \objdata at offset 0xBAC	76396 bytes
`objdata_01_off0000735b.bin` `e3d69969d91defc02360cd12d64adeb7d12d130572baf03b39f7eabb5f8e617c`	rtf-objdata-decoded	RTF \objdata at offset 0x735B	76369 bytes
`objdata_02_off0002e07c.bin` `a8e170497da15decc11753d202c99c86f7a7ffd2d52481e6b9c79a5403675379`	rtf-objdata-decoded	RTF \objdata at offset 0x2E07C	2632 bytes
`objdata_03_off0002f61f.bin` `e8d4fe950caed6dcfde26f4b616825bbe11b93458425974b7d075167f675abf7`	rtf-objdata-decoded	RTF \objdata at offset 0x2F61F	12297 bytes

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