Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 2de6ea5db4a1c336…

MALICIOUS

RTF / .DOC

572.8 KB
MD5: 693383923c2859ebc6bbb4bb35fa5083 SHA-1: 9bbebcec19c02b00cf5f4bd32666a6f51262816e SHA-256: 2de6ea5db4a1c336fc8cbcf688a4327bb5d66aa9ce01b2f887a823bf4e10a7c2
178 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF document contains embedded OLE objects, with specific heuristics indicating that \objupdate forces OLE activation. This suggests the file is designed to exploit these embedded objects upon opening. The presence of a high-entropy carved artifact further supports the likelihood of malicious code execution.

Heuristics 5

  • Ole10Native stream in RTF OLE object high CVE related RTF_OLE10NATIVE_STREAM
    RTF contains an embedded OLE object with an Ole10Native stream. This is a strong payload-container signal and is related to Word/OLE exploit delivery, but it is not specific enough on its own to assign a CVE.
  • \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 2 \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_off00000bdb.bin
d8e01bc67793dc1b2b44abc7ad28fda671cf9865fc93ecb1590a7fcd368c2d1e
rtf-objdata-decoded RTF \objdata at offset 0xBDB 145977 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.97, consistent with packed or encrypted content.