Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 efc7ad768d94d4fb…

MALICIOUS

RTF / .DOC

461.4 KB
MD5: 8405ad43f7daef366f9cedf550e71695 SHA-1: 3cef238b004c53ebdcb2a47c03f6be8f24d03002 SHA-256: efc7ad768d94d4fbdacf9c6d6820c098d04f51f06467c75682bd0ea6ccd64f12
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 file is an RTF document containing OLE object data and an \objupdate directive, indicating an attempt to execute embedded content. The document body contains a lure instructing the user to 'click Enable editing from the yellow bar above', a common tactic to bypass macro security. This suggests the document is designed to trick the user into enabling malicious content, likely to download and execute a secondary 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 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_off00029f5c.bin
fbc037b7008207e1bbc4370dd852816853d42cf951b6d30b8ab4b46eca90b88a
rtf-objdata-decoded RTF \objdata at offset 0x29F5C 1640 bytes