RTF / .DOC malware analysis — malicious · bc19f7738b361573

MALICIOUS

RTF / .DOC

375.9 KB

MD5: 993cd2b2ba622b95c2e4601b1f7c8035 SHA-1: 016fca1e57634a39de7e4e0c96b82b48609a4f77 SHA-256: bc19f7738b3615730088eb93ad5ca5a9dbe09ed607f42657f5499eb60ca97134

180 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The RTF document contains multiple OLE objects, including automatically linked and updated objects, which are commonly used to deliver malicious payloads. The presence of an "Enable Editing" lure in the document body strongly suggests a social engineering attempt to bypass security measures. No specific scripts were extracted, but the OLE object structure indicates a likely downloader or dropper functionality.

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` `1faf4851715743b0f11be35680d469a63226ec8ac4a64a59e42e3a69bd4feafa`	rtf-objdata-decoded	RTF \objdata at offset 0xBAC	79780 bytes
`objdata_01_off0000735b.bin` `a444baacf8f108b21825b70aaf6855351b6f68af8e8c36443cce1a7fc976b137`	rtf-objdata-decoded	RTF \objdata at offset 0x735B	79753 bytes
`objdata_02_off0002fbfa.bin` `a8e170497da15decc11753d202c99c86f7a7ffd2d52481e6b9c79a5403675379`	rtf-objdata-decoded	RTF \objdata at offset 0x2FBFA	2632 bytes
`objdata_03_off0003119d.bin` `e8d4fe950caed6dcfde26f4b616825bbe11b93458425974b7d075167f675abf7`	rtf-objdata-decoded	RTF \objdata at offset 0x3119D	12297 bytes

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