RTF / .DOC malware analysis — malicious · cd3813a56c648286

MALICIOUS

RTF / .DOC

227.2 KB

MD5: fe94bd33da50d2116b33efc5bd321cb5 SHA-1: 303920602fc2871b0a32e582776676d55c1cb889 SHA-256: cd3813a56c648286116a38572e98d6a02fef400df3e248650ed804e3e68943f9

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 OLE objects, including automatically linked and updated objects, which are designed to activate embedded content. The 'SE_ENABLE_LURE' heuristic indicates the document instructs the user to enable macros or editing, a common tactic for malware droppers. No scripts were extracted, but the OLE object activation is the primary mechanism for delivering 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_off00000965.bin` `64589b4615964b2734c3e472867485a0d8650a3d76e2ae3d312e99a70891d865`	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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