Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 54cc474367e9bd1a…

MALICIOUS

RTF / .DOC

6.8 KB First seen: 2022-09-08
MD5: eb6384a760c5d3c87af10f267c972223 SHA-1: 26aa1ef315e375df8ecf2dc77fc827a60996a3d5 SHA-256: 54cc474367e9bd1ab593a118c0f4f2fde0b5ad6af5f88374bffbe153ba3f6318
80 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment T1566.002 Phishing: Spearphishing via Service

The RTF document contains OLE object data and an ".objupdate" directive, indicating it's designed to activate embedded objects. The document body explicitly instructs the user to "Enable editing", a common lure to bypass security measures and execute malicious content. This suggests the file acts as a dropper for further malicious payloads.

Heuristics 3

  • \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
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000855.bin
05c3b3e6837257813742d3609528b6f1b401793f4e7f934ff8a3314d424124c5
rtf-objdata-decoded RTF \objdata at offset 0x855 1744 bytes