Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 9cdc43fb67b2fa18…

MALICIOUS

RTF / .DOC

8.2 KB
MD5: c3fb0fba91281fa671cda06f4ad2df90 SHA-1: 74521217dcd75329f34c63857daa8b7d55d402d9 SHA-256: 9cdc43fb67b2fa1890f0910fa31510e0448ef5a5af68b368b0faefb8df16ebfa
180 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that leverages the CVE-2017-11882 vulnerability in the Equation Editor. This vulnerability allows for arbitrary code execution when the object is activated, likely leading to the download and execution of a secondary payload. No specific family could be identified, but the exploit method is well-documented.

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.
  • Equation Editor CLSID critical RTF_EQUATION_EDITOR
    Equation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
  • \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.

FilenameKindSourceSize
objdata_00_off0000003e.bin
2954b7c59bcc4ce57e8dfde329bfc83f8c07562e9ee51e712e65bff46775bb76		 rtf-objdata-decoded RTF \objdata at offset 0x3E 4150 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.