RTF / .DOC malware analysis — malicious · bb20e491bb56fade

MALICIOUS

RTF / .DOC

227.6 KB

MD5: 3b11dad45f6741b56d5fe852ad47930e SHA-1: f46ab7e699d9ec90a6ba0890e1ed0cf98c44aac8 SHA-256: bb20e491bb56fade80049efca65bc4280b934087cd813f5896e2dbe26b83444f

180 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment

The RTF document contains multiple OLE objects, including automatically linked and updated objects, which are designed to activate upon opening. The 'SE_ENABLE_LURE' heuristic indicates the document instructs the user to enable macros or editing, a common social engineering tactic. This suggests the document's primary purpose is to bypass security measures and execute embedded malicious content.

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` `9ab7af3d60e2b7391d3601425d8d30b83ffc9b24f3f97ff3ba5cdd5c3527fa5d`	rtf-objdata-decoded	RTF \objdata at offset 0x965	19828 bytes
`objdata_01_off0000ab20.bin` `18cff8ef194415d33763880bf64011d23305e4b9143b76244b89e1c53b70a0d5`	rtf-objdata-decoded	RTF \objdata at offset 0xAB20	2632 bytes
`objdata_02_off0000c0c3.bin` `44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037`	rtf-objdata-decoded	RTF \objdata at offset 0xC0C3	12297 bytes

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