Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 9cb0e8ebcedc76a4…

MALICIOUS

RTF / .DOC

66.5 KB First seen: 2023-03-02
MD5: 307a4f60bef4bad3198335a161b1e587 SHA-1: a264ad09cef49d6146324b79c0b1d00a5600071b SHA-256: 9cb0e8ebcedc76a49eda409ad1f2558a44c4bec3f2649b12a0a211198e6b8c43
80 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment T1059 Command and Scripting Interpreter T1059.005 Command and Scripting Interpreter: Visual Basic

The RTF document contains OLE object data and an \objupdate directive, indicating it's designed to activate embedded objects. The document body presents a lure about financial audits, instructing the user to 'Enable editing', a common tactic to bypass macro security. This suggests the document is a dropper intended to execute a malicious payload upon user interaction.

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_off00003465.bin
33605779e9f026078824ee52b5ac6291558e29bffbded579e32c16dceb31594b
rtf-objdata-decoded RTF \objdata at offset 0x3465 3653 bytes