Malicious RTF — malware analysis report

Static analysis result for SHA-256 0eff4682ef51d71c…

MALICIOUS

RTF

8.2 KB First seen: 2019-01-12
MD5: 692236f9b27412cd52ce8caa01bf3e10 SHA-1: a3035331fd1b232db14a13b442d36ea70494c442 SHA-256: 0eff4682ef51d71c1d7808207cc173301aa48d0d20079fab131909e5da0fd0b8
200 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The critical ClamAV detection and RTF heuristics indicate exploitation of CVE-2017-11882 via the Equation Editor. This vulnerability allows for arbitrary code execution when the RTF document is opened. No specific family could be identified, and no external IOCs were extracted.

Heuristics 5

  • Equation Editor CLSID critical CVE likely RTF_EQUATION_EDITOR
    Equation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
  • ClamAV: Doc.Exploit.CVE_2017_11882-6934206-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Exploit.CVE_2017_11882-6934206-0
  • \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.

FilenameKindSourceSize
objdata_00_off0000003a.bin rtf-objdata-decoded RTF \objdata at offset 0x3A 4144 bytes
SHA-256: 9a6fe9f34b51c90fff601c91cd67c5aebf4eff508d23cac79d9baa0e5798e8f2

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