Win.Trojan.Webdor-9854571-0 — RTF / .WRI malware analysis

Static analysis result for SHA-256 11ed3d141a51a1e1…

MALICIOUS

RTF / .WRI

305.2 KB Authoring application: Msftedit 5.41.15.1515
MD5: 0cee2088ec9389d50bc60a4f07e947af SHA-1: 25642dcd8cfbf87904427ae1154ab9c62b4bfa71 SHA-256: 11ed3d141a51a1e1e5da144716f577362712e8030019fd5a1edf14858772b2a8
262 Risk Score

Malware Insights

Win.Trojan.Webdor-9854571-0 · confidence 95%

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

The RTF file contains an embedded OLE object, identified as a package object, which in turn contains a PE header. ClamAV detections indicate this is Win.Trojan.Webdor-9854571-0. The document body is a lure, presenting itself as a curriculum vitae to encourage the user to interact with the malicious embedded object.

Heuristics 7

  • PE header (with DOS stub) in hex data critical RTF_MZ_HEX
    Hex-encoded PE (MZ + DOS stub) found inside RTF — likely an embedded executable payload
  • ClamAV: Win.Trojan.Webdor-9854571-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Webdor-9854571-0
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Package object class high RTF_OBJCLASS_PACKAGE
    OLE Package object — can wrap arbitrary files
  • 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://%s/files/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000002c7.bin
bd9104b020a2263a8caad292cda769d8f6e213b376b823a1d6f0835b99e38953
rtf-objdata-decoded RTF \objdata at offset 0x2C7 149250 bytes
Detection
ClamAV: Win.Trojan.Webdor-9854571-0
Obfuscation or payload: unlikely