Malicious RTF — malware analysis report

Static analysis result for SHA-256 b3addb9571290ed6…

MALICIOUS

RTF

78.9 KB
MD5: a38af90d59eaee27fad83e87024e94c4 SHA-1: 1790141305849f01c7b6a9e88f65f80a31d3ee21 SHA-256: b3addb9571290ed608466c9d5165534b2099dcb0c23ae0e2a1726cc019480dc3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that leverages a known vulnerability in the Equation Editor (CVE-2017-11882). This vulnerability allows for the execution of arbitrary code on the victim's machine, likely to download and run a secondary payload.

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
  • 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_off00002394.bin
275677715c5175c823de652658924f0946edc63a9754a495d9493f04e1100cb1		 rtf-objdata-decoded RTF \objdata at offset 0x2394 3631 bytes

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