Malicious RTF — malware analysis report

Static analysis result for SHA-256 6cf027a6a99b1dd1…

MALICIOUS

RTF

7.2 KB First seen: 2019-01-12
MD5: ba6c2fd4bc341a96dda43527d5295ca6 SHA-1: acea804b1a4108be7e189fa4abff8275e565083e SHA-256: 6cf027a6a99b1dd12ed7d7f1e3784aac7b21370fea4a0fcd44fc6b48a591a43d
180 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers an exploit in Microsoft Equation Editor, as indicated by multiple critical heuristics and ClamAV detection. This exploit allows for the execution of arbitrary code on the victim's machine. The embedded object data is likely the payload or a component thereof.

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 3643 bytes
SHA-256: bcc1dc95714fb72312fdbbe53839137812c47b8df0cb0c7ceb325765b3fe80a4

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