RTF malware analysis — malicious · 6230ebc76cb08a2d

MALICIOUS

RTF

21.9 KB First seen: 2023-05-27

MD5: 76ace98cadbc3852258fd0f4737a5499 SHA-1: 9c1d06e0734b68107afd2393d7e867062af8105b SHA-256: 6230ebc76cb08a2d2d8736282b4c12c7ced58a83aa9c79cf6acf6514da9b5d09

80 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF file contains embedded OLE objects, indicated by the RTF_OBJDATA and RTF_OBJEMB heuristics. The RTF_OBJUPDATE heuristic suggests that the embedded object is configured to execute automatically upon opening the document. This is a common technique for delivering secondary payloads, such as malware downloaders. No specific family could be identified, and the document body was heavily obfuscated.

Heuristics 3

\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
Embedded OLE object medium RTF_OBJEMB

RTF contains \objemb — embedded OLE object

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00000eab.bin` `26349cbf0fad412ffbdc11be87f7f50181e8e657c9dee57bdefd9d1b87a79a07`	rtf-objdata-decoded	RTF \objdata at offset 0xEAB	3661 bytes

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