RTF malware analysis — malicious · 716c596257001fa7

MALICIOUS

RTF

21.1 KB First seen: 2023-02-09

MD5: 72c820e94bfdc89048babe26aba5ea28 SHA-1: b26d6b501f1f832ccb1f1cfd15400494d421e360 SHA-256: 716c596257001fa783b8500fce06dd51a5a5906bc78f4c6c6bcce77f363fda4d

100 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF file contains OLE object data and uses \objupdate to force activation, indicating an attempt to exploit OLE vulnerabilities. The presence of \objupdate and Ole10Native stream suggests the embedded object is designed to be executed, likely leading to a secondary payload. No document body or scripts were extracted, limiting further analysis of the specific lure.

Heuristics 3

Ole10Native stream in RTF OLE object high CVE related RTF_OLE10NATIVE_STREAM

RTF contains an embedded OLE object with an Ole10Native stream. This is a strong payload-container signal and is related to Word/OLE exploit delivery, but it is not specific enough on its own to assign a CVE.
\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 1 \objdata section(s) — embedded OLE objects

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off000012cf.bin` `11479974d3e9d25197e5fc5dc74ac9050de5a98297099f0d0dee339df29cb5c8`	rtf-objdata-decoded	RTF \objdata at offset 0x12CF	4171 bytes

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