Malicious RTF — malware analysis report

Static analysis result for SHA-256 6c283ccb942c0bf4…

MALICIOUS

RTF

8.2 KB First seen: 2018-11-13
MD5: 31dd64c70677c34a9613c21cf38938f6 SHA-1: 0aa567ed44bbaa3aedc11f5d8d0a8e030de5f535 SHA-256: 6c283ccb942c0bf4f7bd9dbc04d7a26f4ebb5f4ce63e062831860186442f8bc0
180 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF file contains embedded OLE object data and specifically triggers heuristics related to Equation Editor and OLE activation. ClamAV detection confirms this is a known exploit for CVE-2017-11882, which is typically delivered via spearphishing attachments. The exploit allows for arbitrary code execution on the victim's machine.

Heuristics 4

  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0000003b.bin rtf-objdata-decoded RTF \objdata at offset 0x3B 4142 bytes
SHA-256: 88ef1c65829004da414c713f597821a0e919c730e6f599d989808416667fb198

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