Malicious RTF — malware analysis report

Static analysis result for SHA-256 1fada7e24e4c182a…

MALICIOUS

RTF

9.2 KB First seen: 2019-05-16
MD5: f7fb6eae973555222d873b13d77fdf7f SHA-1: e719a3b2ee28bd8b89789bcfe3d6af9de8a1b63c SHA-256: 1fada7e24e4c182ad122dc60db39396676354022fa04fb52f94a893d5a33400f
180 Risk Score

Malware Insights

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

The file is an RTF document containing an embedded OLE object that exploits the CVE-2017-11882 vulnerability in Microsoft Equation Editor. This exploit allows for the execution of arbitrary code on the victim's machine, likely as part of a spearphishing campaign. No specific malware family could be identified.

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: Rtf.Exploit.CVE_2017_11882-6584355-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Rtf.Exploit.CVE_2017_11882-6584355-1
  • \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_off0000003c.bin rtf-objdata-decoded RTF \objdata at offset 0x3C 4670 bytes
SHA-256: e2a45e7e2be01f81dc00a30f5ae7b0cafbf688fc3733dba47e58e7fd038553a2

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