Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 23ddf03407b26649…

MALICIOUS

RTF / .DOC

229.9 KB First seen: 2022-05-05
MD5: 60b499476b02f28a2effeb5e0c9d6884 SHA-1: fa0ed4c777b6bf4c786717866a0f59ec723f0f17 SHA-256: 23ddf03407b26649a98b78ef22f9ef4d9fd0755814ebe9fa087f0fff87593a94
139 Risk Score

Malware Insights

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

The RTF document contains multiple OLE objects, with heuristics indicating that these objects are automatically linked and updated. This suggests the document is designed to exploit vulnerabilities or trigger malicious code execution upon opening, likely through the embedded OLE objects. The absence of a document body and scripts prevents further analysis of the specific payload or lure.

Heuristics 3

  • Automatically linked OLE object high RTF_OBJAUTLINK
    RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
  • \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_off0000007d.bin
5bcf710de3bb7ea36243ba1d6b3d586b24fed6b2ccc2fa01556b2aa0ae682449
rtf-objdata-decoded RTF \objdata at offset 0x7D 1673 bytes