RTF / .DOC malware analysis — malicious · 9189d93f6db3ed5a

MALICIOUS

RTF / .DOC

227.2 KB

MD5: 3d9f3febf8957e6562580c0e131e6a94 SHA-1: 6d4bde3f3fe89860dba5183c9f07aa403fa2d479 SHA-256: 9189d93f6db3ed5a0147f73f089bc8aee1692871501deb619b5904f1511570dc

180 Risk Score

Malware Insights

MITRE ATT&CK

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

The RTF document contains multiple embedded OLE objects, with heuristics indicating automatic linking and update triggers. This suggests the document is designed to exploit OLE object activation to execute embedded code, likely a second-stage payload. The 'SE_ENABLE_LURE' heuristic further supports this, indicating the document likely contains instructions to enable content. No scripts were extracted, and no document body was available for analysis.

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` `82716a87d212b30070a3ea565ce361df56fd9ea5d5f3b1db698c6f98d74c342d`	rtf-objdata-decoded	RTF \objdata at offset 0x965	19621 bytes
`objdata_01_off0000a972.bin` `18cff8ef194415d33763880bf64011d23305e4b9143b76244b89e1c53b70a0d5`	rtf-objdata-decoded	RTF \objdata at offset 0xA972	2632 bytes
`objdata_02_off0000bf15.bin` `44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037`	rtf-objdata-decoded	RTF \objdata at offset 0xBF15	12297 bytes

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