Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 60f612dc50ccb01d…

MALICIOUS

RTF / .DOC

4.4 KB First seen: 2023-02-14
MD5: d6241fd9ed697d654a43c6af13d6228f SHA-1: 85a2a2a92ba046771e3b8574197cd3c94a7a8e0f SHA-256: 60f612dc50ccb01def231baee0299631bec50ee7b2a83720ca23f48ddc3be2e8
60 Risk Score

Malware Insights

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

The RTF document contains an embedded OLE object, indicated by the RTF_OBJDATA heuristic. The RTF_OBJUPDATE heuristic suggests that this object is designed to be activated automatically upon opening, which is a common technique for exploiting vulnerabilities in older versions of Microsoft Office. The specific exploit targeted is not identifiable from the provided heuristics, but the overall pattern suggests a downloader or dropper.

Heuristics 2

  • \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 1 \objdata section(s) — embedded OLE objects

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000077.bin
42b80476dc0136c0738bbffdbd5c521891faca5c8d4f020833dbe2e748dbf719
rtf-objdata-decoded RTF \objdata at offset 0x77 2171 bytes