Win.Trojan.Truko-10 — RTF / .EXE malware analysis

Static analysis result for SHA-256 9935febbc32bc1d1…

MALICIOUS

RTF / .EXE

263.5 KB Authoring application: Msftedit 5.41.15.1515
MD5: 54d449135bd461d5485180b382e41870 SHA-1: 7411171b5cf6f011a0eb764644d1bd7620a0f340 SHA-256: 9935febbc32bc1d1c277a6ddcfc577e538e5de9e719b8048676827441ce825e1
262 Risk Score

Malware Insights

Win.Trojan.Truko-10 · confidence 95%

MITRE ATT&CK
T1559.001 Component Object Model Hijacking T1137.001 DLL Search Order Hijacking

The RTF document contains embedded OLE object data, specifically a package object, which in turn contains a PE executable. ClamAV identified this as Win.Trojan.Truko-10. The presence of the PE header within hex data and the extracted artifact strongly indicate the RTF is a dropper for a malicious executable.

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.Truko-10 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Truko-10
  • 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_off000000d1.bin
5bf29db660e535dec567b5e8cf391d80e4d8d35b312f773b716506cc5c4befe7		 rtf-objdata-decoded RTF \objdata at offset 0xD1 127717 bytes
Detection
ClamAV: Win.Trojan.Truko-10
Obfuscation or payload: likely
Carved artifact entropy is 7.83, consistent with packed or encrypted content.

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