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

Static analysis result for SHA-256 98266908f663c600…

MALICIOUS

RTF / .WRI

299.0 KB Authoring application: Msftedit 5.41.15.1515
MD5: 32f3e39a18a029a8c696d5d58b4513f9 SHA-1: bdb193dd4d64fde016fb2ac67eeca92a551ecd50 SHA-256: 98266908f663c60058a847d81819c28ed9fd70ea2f183bc38fbd84a1dd38a01a
260 Risk Score

Malware Insights

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

MITRE ATT&CK
T1559.002 Component Object Model Hijacking T1204.002 Malicious File

The RTF document contains an embedded OLE object, identified as a package object. This object contains PE header data, indicating a malicious executable. ClamAV signatures confirm this, identifying the sample as Win.Trojan.Webdor-9854571-0. The document itself is a lure, presenting itself as a curriculum vitae to trick the user into interacting with the malicious payload.

Heuristics 6

  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000002c7.bin
65a106d2512d10cb940b3765e515a319e66235d8f942373fef9ca89df8b2e1ab
rtf-objdata-decoded RTF \objdata at offset 0x2C7 145154 bytes
Detection
ClamAV: Win.Trojan.Webdor-9854571-0
Obfuscation or payload: unlikely