Malicious RTF — malware analysis report

Static analysis result for SHA-256 0503570936a2349d…

MALICIOUS

RTF

13.8 KB First seen: 2022-07-29
MD5: 9cfe82b46ec8e8f0b6374c86770666e6 SHA-1: 08004aab54cf6bb69c2f74cd9796009cc5692323 SHA-256: 0503570936a2349d61ff04177736f5cc7dabb3cb00431c71fa6add720c5bcce8
80 Risk Score

Malware Insights

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

The RTF document contains OLE object data and uses an \objupdate directive, indicating it's designed to activate embedded objects. The 'SE_ENABLE_LURE' heuristic confirms the document instructs the user to enable editing, a common tactic for malware droppers to bypass security measures and execute their payload.

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_off00001f1c.bin
4b6f735e7fe49cbc47c335a116be1224c3bc7fe75a8522c161702629a43f2fea		 rtf-objdata-decoded RTF \objdata at offset 0x1F1C 1870 bytes

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