Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 ac4e5f6f39aebb0f…

MALICIOUS

RTF / .DOC

360.6 KB First seen: 2024-06-12
MD5: 39990481e7a4ebc5ee5b30b8f9ecb44b SHA-1: 48d884a85d9ef84e8726a8c825f0722878ab75d1 SHA-256: ac4e5f6f39aebb0f686813bd7ef6b678050d0876f05bd6f30aaf7d08f2d0d7d7
80 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment

The RTF document contains OLE object data and an \objupdate directive, indicating an attempt to execute embedded content upon opening. The document body provides a lure related to financial audits, instructing the user to 'Enable editing', a common tactic to bypass macro security. This suggests the file is designed to exploit OLE object vulnerabilities or trick users into running 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_off00015d3f.bin
9a5eab6bbdd7b6d429b82c250365c557d9a16598240dd05cc40973cfda278139
rtf-objdata-decoded RTF \objdata at offset 0x15D3F 1579 bytes