RTF malware analysis — malicious · 5211f8a84eec48c6

MALICIOUS

RTF

798.7 KB Created: 2021-02-12 04:30:00

MD5: f494d2337a91db573dbd0bd97f7033bb SHA-1: c19085ea39724eeb850d643894533ba8dcd2b350 SHA-256: 5211f8a84eec48c6fae2fca1d0d3891b3d0db98665fb111bf112a357e1a096dc

102 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers the CVE-2017-11882 vulnerability in Microsoft Equation Editor. This exploit allows for arbitrary code execution, indicating a malicious intent to compromise the system. The document body content appears to be unrelated filler text, likely to obscure the malicious nature of the file.

Heuristics 4

CVE-2017-11882 — Equation Editor FONT record overflow critical CVE likely CVE_2017_11882

Equation Editor MTEF contains an overlong FONT typeface field, the vulnerable copy primitive for CVE-2017-11882. This is stronger evidence than the Equation Editor CLSID alone because it identifies the malformed record that drives code execution in EQNEDT32.EXE.
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
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://schemas.microsoft.com/office/word/2003/wordml

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00085885.bin` `0109f29ba73d8a06ba5b0763ff15e485d8a02093d47d8d94baa960f825669f10`	rtf-objdata-decoded	RTF \objdata at offset 0x85885	3631 bytes

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