RTF / .DOC malware analysis — malicious · e2ea7ad7bb5d55e0

MALICIOUS

RTF / .DOC

1.02 MB

MD5: db5535e87487ddee9e21296d8f968800 SHA-1: cdb3649ddf5b7ef07ec63483a7012d505618e6dc SHA-256: e2ea7ad7bb5d55e074c8a9d81f3399841c136ffbaa95e2172637a0047b4cc931

220 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1566.001 Phishing: Spearphishing Attachment T1027 Obfuscated Files or Information T1137.003 Software Deployment Tools: Windows Management Instrumentation

The RTF document contains multiple OLE objects, including automatically linked and updated objects, which are designed to execute embedded content. High severity heuristics indicate excessive hex data within these objects, suggesting a hidden payload. The presence of a macro/content-enable lure further supports the intent to trick the user into activating the malicious content, likely leading to the download and execution of a second-stage payload.

Heuristics 7

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.
Large hex data blocks in OLE object high RTF_EXCESSIVE_HEX

RTF contains ~1037KB of hex-encoded data inside \objdata sections — may hide a payload
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_off00000bb2.bin` `4ff8db8c127d3d211a7ba885cca68d0862b10092a8a79c1767222ac295ed2002`	rtf-objdata-decoded	RTF \objdata at offset 0xBB2	408296 bytes
`objdata_01_off00007361.bin` `026defd18704019c70c39854424774167369985696febe504b1c023905c27c61`	rtf-objdata-decoded	RTF \objdata at offset 0x7361	408269 bytes
`objdata_02_off000d6932.bin` `51ef705eef602ac6eb91c2063c8f50d4e54b5e051b60429031d41133bc7df645`	rtf-objdata-decoded	RTF \objdata at offset 0xD6932	2632 bytes
`objdata_03_off000d7ed5.bin` `e8d4fe950caed6dcfde26f4b616825bbe11b93458425974b7d075167f675abf7`	rtf-objdata-decoded	RTF \objdata at offset 0xD7ED5	12297 bytes

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