Rtf.Dropper.Agent-7384550-0 — RTF malware analysis

Static analysis result for SHA-256 84e0378fa0e8b68f…

MALICIOUS

RTF

895.3 KB Created: 2019-11-06 02:09:00 First seen: 2020-02-04
MD5: 84eb73c7f92e6c8ed591a33b663cb928 SHA-1: dc928f8e3608c5ab43251d0f55e705947ecb10c8 SHA-256: 84e0378fa0e8b68f2fa88d0ffd7b07ce554124c8f4ce8dcdfd07589906313368
202 Risk Score

Malware Insights

Rtf.Dropper.Agent-7384550-0 · confidence 95%

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

The RTF file contains an embedded OLE object that is activated via \objupdate, exploiting CVE-2017-8759. This technique is commonly used by droppers to download and execute additional malware. ClamAV identified the sample as Rtf.Dropper.Agent-7384550-0, supporting its role as a dropper.

Heuristics 6

  • CVE-2017-8759 — MSXML SAX OLE activation critical CVE likely CVE_2017_8759
    RTF contains a hex-encoded OLE1 object for Msxml2.SAXXMLReader.6.0 followed by an embedded OLE compound document, and the document requests OLE activation. This matches the RTF staging shape used for CVE-2017-8759 SOAP/WSDL parser code injection.
  • ClamAV: Rtf.Dropper.Agent-7384550-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Rtf.Dropper.Agent-7384550-0
  • \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
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object
  • 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://schemas.microsoft.com/office/word/2003/wordml In RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00003667.bin rtf-objdata-decoded RTF \objdata at offset 0x3667 47078 bytes
SHA-256: 0d821c9c967c96dfef67b67e54098bbddcc558d39ab970032d38b6c8436433c4

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