RTF malware analysis — malicious · af822088e82ed32f

MALICIOUS

RTF

4.4 KB First seen: 2023-10-03

MD5: 8983cf278c6f06788003c170b6d8cc6d SHA-1: 8e6152dc70229aa904913f3f90d7d989609e17c0 SHA-256: af822088e82ed32f7c78634da68a2f9baa8fd3b58f3b53b18120c5a0ddd67d11

80 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF file contains embedded OLE objects, with heuristics indicating that \objupdate forces OLE activation. This suggests the file is designed to exploit OLE vulnerabilities to execute arbitrary code upon opening. The specific exploit mechanism is not detailed, but the presence of OLE objects points towards a common delivery method for malware.

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_off0000008e.bin` `52edd2963574a9940588a7c7e2d7a76a03b9b72bf268cff6a667edef4364613d`	rtf-objdata-decoded	RTF \objdata at offset 0x8E	2122 bytes

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