Malicious RTF — malware analysis report

Static analysis result for SHA-256 330e89ff21c254e8…

MALICIOUS

RTF

7.1 KB First seen: 2019-05-16
MD5: ddeeae363d53d6c897d0445cabbda14c SHA-1: 924c131079777f94ea15e153208208dc120ecb09 SHA-256: 330e89ff21c254e863e0af819adc49fdd205740e9d6a06cdcfeec49f01151982
200 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 for the Equation Editor vulnerability (CVE-2017-11882). This exploit allows for arbitrary code execution upon opening the document. The ClamAV signature further confirms the exploitation of this known vulnerability, indicating a malicious intent to compromise the user's system.

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_off0000003b.bin rtf-objdata-decoded RTF \objdata at offset 0x3B 3619 bytes
SHA-256: d06fb15ee5f6999a580facbd2ff6d74ece9d057363f7aa123d1fb2e63aaea494

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