Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 50a82b5329793f7b…

MALICIOUS

RTF / .DOC

7.4 KB First seen: 2022-09-28
MD5: 85cc945a3c083c1cbbea28b06ab2f95c SHA-1: d23022790493db39bc24f4d0700a374a8c323fcb SHA-256: 50a82b5329793f7b37aa0596c07281f9018066302e53ba0b753c3e46be94871f
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, which are indicative of malicious embedded content designed to execute automatically upon opening. The document body explicitly instructs the user to 'Enable editing' and mentions it was created in an 'earlier version of Microsoft Office Word', a common social engineering tactic to bypass security warnings and prompt macro execution.

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 1 \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_off00000b29.bin
ccf6e2c22a75ace0a6503a4cad61fd6778eb2c82076ad57c99be4ae64f1c4866
rtf-objdata-decoded RTF \objdata at offset 0xB29 1533 bytes