Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 97342be9425f13cc…

MALICIOUS

RTF / .DOC

12.1 KB First seen: 2022-09-22
MD5: 336d14c58402efa641679e1951ef5a5a SHA-1: 4fc6ea7f40c966e72be8c56f65bab1c55e92a184 SHA-256: 97342be9425f13cc1058b85f217ed47f32dbd277813a6a6064009ccf16ca25a2
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 uses an \objupdate directive, indicating an attempt to embed and activate external content. The heuristic 'SE_ENABLE_LURE' confirms that the document explicitly instructs the user to enable editing and macros, a common social engineering tactic to bypass security measures. This suggests the file is a lure designed to facilitate the execution of malicious code.

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_off00001f1d.bin
03abaa32ef8d1ac1da2c155d5763d85c12cf74872004ef25c7058c3da8e25934
rtf-objdata-decoded RTF \objdata at offset 0x1F1D 1459 bytes