Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 05ad66d563f492c9…

MALICIOUS

RTF / .DOC

636.3 KB First seen: 2024-08-21
MD5: 16ddde7b45c040f9fb63e73863134f5c SHA-1: ca18b30011b59e341eae8006d05d543e7314ce0c SHA-256: 05ad66d563f492c9b527602ff6c7bd9b8fa0ed8f288d0481f51ebe6b71b05242
120 Risk Score

Malware Insights

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

The file is an RTF document containing OLE object data and an automatically linked OLE object that is updated via \objupdate. The heuristic SE_ENABLE_LURE indicates the document instructs the user to enable editing, a common lure for macro-based malware droppers. The document body discusses financial audits, likely to appear legitimate and encourage the user to bypass security warnings.

Heuristics 4

  • Automatically linked OLE object high RTF_OBJAUTLINK
    RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
  • \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_off00050d80.bin
eb6cc5aa2425d02e3850bc7a48f25834e60c31fed619de436d3bf79f15670e70
rtf-objdata-decoded RTF \objdata at offset 0x50D80 1755 bytes