Win.Trojan.Llac-7 — RTF malware analysis

Static analysis result for SHA-256 df12accfa3e7bd92…

MALICIOUS

RTF

620.1 KB Authoring application: Msftedit 5.41.15.1515
MD5: 5ae45fa8fb617e7794ac1ce3c97692f6 SHA-1: 9e86fcf3ccae5bf57b5c440cfee6334ef24bc9f0 SHA-256: df12accfa3e7bd921b55a291f372325d9e7375cd7c5c88c46156e041378ba1d2
262 Risk Score

Malware Insights

Win.Trojan.Llac-7 · confidence 95%

MITRE ATT&CK
T1559 Component Object Model Hijacking T1559.001 Component Object Model Hijacking: DLL Side-Loading T1204 User Execution T1204.002 User Execution: Malicious File

The RTF file contains an embedded OLE object which is identified as a PE executable by ClamAV. The presence of RTF_MZ_HEX and RTF_OBJCLASS_PACKAGE heuristics indicates that the RTF is designed to deliver a malicious executable. The ClamAV detection name 'Win.Trojan.Llac-7' suggests this is a known trojan.

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.Llac-7 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Llac-7
  • 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
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000000d3.bin
01444158987305c867ca52c31ae980eb591be85c1b83fac890b46f9673a6de0c		 rtf-objdata-decoded RTF \objdata at offset 0xD3 309020 bytes
Detection
ClamAV: Win.Trojan.Llac-7
Obfuscation or payload: likely
Carved artifact entropy is 7.84, consistent with packed or encrypted content.

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