RTF malware analysis — malicious · dcaaf81e0f1738ed

MALICIOUS

RTF

113.0 KB Created: 2021-07-16 07:42:00

MD5: f193be9c8d63fc3a64dd654e082f08ba SHA-1: 9626d21cff3188f84d53f9665017f06a884b04db SHA-256: dcaaf81e0f1738ed566e7a9f072ce848d93b91f7ebe26a1e5a5d8ecdf6e11abf

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 vulnerability allows for arbitrary code execution, indicating a malicious intent to compromise the system. No document body or scripts were extracted, but the exploit itself is sufficient evidence of maliciousness.

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_off0000333b.bin` `9e66281f0fc63a7748405bffdfb60687b10c1bc1ff6dcc6736203952c005ce1a`	rtf-objdata-decoded	RTF \objdata at offset 0x333B	3629 bytes

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