Malicious RTF — malware analysis report

Static analysis result for SHA-256 0a12dc01f7610c67…

MALICIOUS

RTF

5.6 KB First seen: 2018-06-30
MD5: ba31e8c888c2873d40c4bc2622718052 SHA-1: 58b1a22d4280c685b4bfed936efb9169de40ec1c SHA-256: 0a12dc01f7610c67423c4f7507d49edd346b36843b4b4739f8da732b201bf388
222 Risk Score

Malware Insights

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

The RTF file contains OLE object data and is configured to automatically update and activate an embedded OLE object. This behavior is indicative of an exploit for CVE-2017-0199, which leverages a weaponized URL to download and execute a secondary payload. The extracted URL, http://docs.herobo.com/mr/2/test.hta, is the likely source of this payload.

Heuristics 6

  • CVE-2017-0199 (OLE2Link / weaponized URL) critical CVE exact CVE_2017_0199_WEAPONIZED_URL
    RTF contains a URL Moniker OLE link to a script/HTA/template-style remote loader, matching the tighter static CVE-2017-0199 shape.
  • ClamAV: Rtf.Exploit.CVE_2017_0199-6335035-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Rtf.Exploit.CVE_2017_0199-6335035-0
  • Automatically linked OLE object high RTF_OBJAUTLINK
    RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
  • \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 URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://docs.herobo.com/mr/2/test.hta In RTF body
    • http://schemas.microsoft.com/office/word/2003/wordmlIn RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000001a2.bin rtf-objdata-decoded RTF \objdata at offset 0x1A2 2601 bytes
SHA-256: 83a57ad8ffed6d5a135ba893e1dba4f6a8b754ae465027cec055875ae5759d19

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