Malicious RTF — malware analysis report

Static analysis result for SHA-256 ecef1df832a61df6…

MALICIOUS

RTF

5.6 KB First seen: 2018-01-08
MD5: 296ad676809da165bb9b077c2bc68b38 SHA-1: 1cdb5975902d27a32c23f3d7d4aab6839f553ca8 SHA-256: ecef1df832a61df60cd862a696f2386c79c165a70c6b75a30dec606d99b9e150
222 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 is configured to automatically update and activate this object. This mechanism is exploited via CVE-2017-0199 to fetch and execute a remote document from 'http://dagobah.local/logo.doc', indicating a downloader or exploit delivery pattern.

Heuristics 6

  • CVE-2017-0199 (OLE2Link / remote URL Moniker) critical CVE likely CVE_2017_0199
    RTF contains a URL Moniker OLE link whose decoded target is remote. Office can fetch and process the response through the CVE-2017-0199 OLE2Link attack path, but the server-side content type is not proven statically.
  • 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://dagobah.local/logo.doc 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_off0000019e.bin rtf-objdata-decoded RTF \objdata at offset 0x19E 2601 bytes
SHA-256: c324398c9695a751d3f56c7b7e63760b09eeff8a2196d4f46efd537f2977f117

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