RTF / .DOC malware analysis — malicious · 9719cfe61de70690

MALICIOUS

RTF / .DOC

271.5 KB

MD5: e9ed4009d9a428919719d824d9f6cf2f SHA-1: 0db8e3a6c552b43c18d3ba2496edc9c6b996aa2a SHA-256: 9719cfe61de70690523173373d7e588d3d4fc6bbf22dd23bca7ffcaca9e5dd86

180 Risk Score

Malware Insights

MITRE ATT&CK

T1204 User Execution T1204.002 Malicious File T1566 Phishing T1566.001 Spearphishing Attachment

The RTF document contains multiple OLE objects, including automatically linked and updated objects, which are often used to execute malicious code. The presence of a 'Macro/content-enable lure' heuristic indicates the document likely instructs the user to enable macros or editing to bypass security measures. This suggests the file is designed to trick the user into activating embedded content, which would then likely download and execute a secondary 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_off00000969.bin` `cb093c06fcf3c86cf09ec1943fb877a963c70c0b506bc344c21dca76596035a2`	rtf-objdata-decoded	RTF \objdata at offset 0x969	41398 bytes
`objdata_01_off00015a66.bin` `9d9bc825f2fa5e0ed8db7dce6823e199ad9c775873472d42887214589f205470`	rtf-objdata-decoded	RTF \objdata at offset 0x15A66	2632 bytes
`objdata_02_off00017009.bin` `44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037`	rtf-objdata-decoded	RTF \objdata at offset 0x17009	12297 bytes

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