RTF / .DOC malware analysis — malicious · a9457644d3fc78f6

MALICIOUS

RTF / .DOC

340.8 KB First seen: 2021-09-17

MD5: c3fdc25933804929491d1863ad1522e8 SHA-1: 52ea3c6c0252f2a487cf57ac49de70d7353b2df2 SHA-256: a9457644d3fc78f67028d464fde1bd0d943ba75db2714a85009afa1055463751

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 updating objects, which are designed to activate when the document is opened. The 'SE_ENABLE_LURE' heuristic indicates that the document likely instructs the user to enable macros or content, a common social engineering tactic to bypass security measures. This setup strongly suggests the document is a dropper intended to execute a secondary payload upon user interaction.

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` `555b698bd18088503366ae725d0b9c992895552645318fd6d638093ca7bf062f`	rtf-objdata-decoded	RTF \objdata at offset 0x965	75561 bytes
`objdata_01_off00026ff4.bin` `18cff8ef194415d33763880bf64011d23305e4b9143b76244b89e1c53b70a0d5`	rtf-objdata-decoded	RTF \objdata at offset 0x26FF4	2632 bytes
`objdata_02_off00028597.bin` `44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037`	rtf-objdata-decoded	RTF \objdata at offset 0x28597	12297 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.