Malicious RTF — malware analysis report

Static analysis result for SHA-256 27da163fc18aecda…

MALICIOUS

RTF

20.5 KB
MD5: 9aa6aa141a72e6bdf7c94c6d9ec6393a SHA-1: 3d4e2eb631050d86366bf6470159802e8f5b071d SHA-256: 27da163fc18aecdaa7d4f5148d373b2b24e8524933aaf9b168a33c060e12ca93
100 Risk Score

Malware Insights

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

The RTF file contains embedded OLE objects, indicated by RTF_OBJDATA and RTF_OLE10NATIVE_STREAM heuristics. The RTF_OBJUPDATE heuristic suggests that these objects are designed to be automatically activated upon opening the document. This mechanism is commonly used to download and execute a secondary payload, although no specific download URL or script was directly extracted from this sample.

Heuristics 3

  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000f41.bin
d14bc4207a1f694b3d6bf55535ede039d125b1a7af5fa8227db5d12c0a8275da
rtf-objdata-decoded RTF \objdata at offset 0xF41 3690 bytes