Rtf.Dropper.Agent-9323271-0 — RTF malware analysis

Static analysis result for SHA-256 f2db71dfd60ff3cb…

MALICIOUS

RTF

50.0 KB First seen: 2019-04-18
MD5: 5fd91d8fd324462fc721c9343d009511 SHA-1: ff04ec12ea38601a8273ea81d3e4c348fe01f466 SHA-256: f2db71dfd60ff3cb017a05f07a6ea0a1f9986a80a2e90bf4ab1aecf7c32c7843
122 Risk Score

Malware Insights

Rtf.Dropper.Agent-9323271-0 · confidence 95%

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

The file is an RTF document identified by ClamAV as Rtf.Dropper.Agent-9323271-0. It contains an OLE object that forces activation via \objupdate, indicating it's designed to execute embedded content. The presence of an embedded URL, though benign, suggests a potential download mechanism for a secondary payload.

Heuristics 4

  • ClamAV: Rtf.Dropper.Agent-9323271-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Rtf.Dropper.Agent-9323271-0
  • \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 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_off0000b871.bin rtf-objdata-decoded RTF \objdata at offset 0xB871 1688 bytes
SHA-256: f21911bbb2cf9e390a428016e8d687c8f1c054ebc29852c741972f3e5eeb6de8

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